Cisco MGX 8220 Installation And Configuration Manual

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Cisco MGX 8220 Installation and Configuration

Release 5.0 November 20 03

Customer Order Number: DOC-786430= Text Part Number: 78-6430-03 Rev. D0

THE SPECIF ICA TIONS AND IN FOR M AT IO N RE GA RDING THE PR ODU C TS IN T HI S MAN UA L A RE S U B JEC T TO CH AN GE WITH O UT NOTICE. ALL STATEMENTS, INFORMATION, AND RECOMMENDATIONS IN THIS MANUAL ARE BELIEVED TO BE ACCURATE BUT ARE PRESENTED WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED. USERS MUST TAKE FULL RESPONSIBILITY FOR THEIR APPLICATION OF ANY PRODUCTS.

THE SOFTWARE LICENSE AND LIMITED WARRANTY FOR THE ACCOMPANYING PRODUCT ARE SET FORTH IN THE INFORMATION PACKET THAT SHIPPED WITH THE PRODUCT AND ARE INCORPORATED HEREIN BY THIS REFERENCE. IF YOU ARE UNABLE TO LOCATE THE SOFTWARE LICENSE OR LIMITED WARRANTY, CONTACT YOUR CISCO REPRESENTATIVE FOR A COPY.

The following informati on is for F CC compli an ce of Class A device s: This eq uipment has been teste d and found t o co mply wit h the limits for a Class A digital device, pursuant to pa rt 15 of th e FCC rul es. Thes e limits ar e design ed to prov ide re asona ble prote cti on agai nst harmf ul interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio-frequency energy and, if not installed and used in accordance with the inst ruction ma nua l, may ca use harmf ul interfer ence to ra dio com muni cations. Oper atio n of this e quipme nt in a residential area is likely to cause harmful interfe rence , in whi ch case users will be require d to corr ect the int erfer ence a t their own expen se.

The following information is for FCC compliance of Class B devices: The equipment described in this manual generates and may radiate radio-frequency energy. If it is not installed in accordance with Cisco’s installation instructions, it may cause interference with radio and television re ception . T h i s equipmen t has bee n teste d and fo und to co mply with the limits f or a Cla ss B di gital device in acco rdan ce with th e spec ific atio ns in part 15 of the FCC rules. These specifications are designed to provi de reason able pr otec tion agains t su ch interf erenc e in a resid ential installati on. Ho we ver, the re i s no gu a rantee that interference will not occur in a particular installation.

Modifying the equipment wit hout C isco’s w ritten authoriza tion may r esult in the e quipme nt no longer c omplyi ng with F CC requ irements for Class A or Class B digital devices. In tha t event, your right to use the equipme nt may be limited by FCC re gulati ons, and you may be re quired to c orre ct an y interference to radio or tele vision c ommun icati ons at your o wn e xpense.

You can determine whether your equipment is causing interference by turning it off. If the interference stops, it was probably caused by the Cisco equipment or one of its peripheral devices. If the equi pment caus es int erferenc e to rad io or televi sion recepti on, try to correc t the inte r fe rence by using one or more of the following measures :

• Turn the television or radio ant enna unt il the int erferenc e st ops.

• Move the equipment to one side or the ot her of the tel evisi on or radi o.

• Move the equipment farther awa y fr om the televi sion or ra dio.

• Plug the equipment into an outlet that is on a different circuit from the television or radio. (That is, make certain the equipment and the television or radio are on circuits controlled by diff erent circ uit break ers or fuses.)

Modifications to this produc t not aut horized by C is co Systems, Inc. cou ld void t he FCC approva l and ne gate your a uth ority to operate the product. The Cisco implementation of TCP header compression is an adaptation of a program developed by the University of California, Berkeley (UCB) as part of

UCB’s public domain version of t he UNIX oper atin g system. All rig hts reser ved. Copy ri ght © 1981 , Regen ts of the Unive rsi ty of Cal iforni a. NOTWITHS TA NDI NG AN Y OT HER WARR AN TY HE REI N, ALL D OCUM ENT F IL ES AND SOF TWA R E OF TH ES E SU PPLIE RS A RE PR O VIDE D

“AS IS” WITH ALL FAULTS. CISCO AND THE ABOVE-NAMED SUPPLIERS DISCLAIM ALL WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING, WITHOUT LIMITATION, THOSE OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINF R I NGEMEN T OR ARISI N G F R O M A COUR S E OF D E A LI N G, U S AGE, OR T R ADE PRA C TI CE.

IN NO EVENT SHALL CISCO OR ITS SUPPLIERS BE LIABLE FOR ANY INDIRECT, SPECIAL, CONSEQUENTIAL, OR INCIDENTAL DAMAGES, INCL UD IN G , WI TH OU T LI MITATION, LO S T P ROF IT S OR LO S S OR DA M AGE TO DA TA ARISING OUT O F TH E USE OR INABILITY TO USE THIS MANUAL, EVEN IF CISCO OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

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Notice to Users of T1 Services

1. The device must onl y be connected to the T1 network con nected behind an FCC Part 68 registered channel service unit. Direct connection is not allowed.

2. Before connecti ng your unit, you must inform the telephone company of the following information: SOC:6.0N FIC: 04DU9-ISN

3. If the unit appears to be malfunctioning, it s hould be disconnected from the telephone lines until you learn if your equipment or the telephone line is the source of the trouble. If your equipment needs re pair, it should not be reconnected until it is r epaired.

4. If the telephone co mpa ny finds that this equipm ent is exceeding tolerable parameters, the telephone company can temporarily dis connect service, although they will a ttempt to give you advance notice if possible.

5. Under FCC rules, no custom er is authorized to repair this equipment. This restrictio n applies regardless of whether the equipment is in or out of warranty.

6. If the telephone company alters their equipment in a manner that will affect the use of this device, they must give you advance warning so as to give you the opportunity for uninterrupted service. You will be advised of your right to file a complaint with the FCC.

7. The affidavit must be completed by the install er.

8. User may not under any circumsta nces (in o r out of war ranty) a ttem pt any serv ice, adjustm ent or re pairs of this equipment. For any question or problem regardin g this equipment, contact the manufacturer of the manufacturer’s representative.

T1 SYSTEMS AFFIDAVIT REQUIRE M ENT FOR CONNEC TI ON TO DIGITAL SERVICES

An affidavit is requir ed to served to t he telephone company whenev er digital terminal equi pment without encoded analog content and billing protectio n is used to transm it digital signals cont aining encoded analog content which are intended for eventual conversion into voiceband analog signals and retransmitted over the network.

The aff idavit shall affirm that eit her no encoded analog content for billing information is being trans mitted or that the output of the dev ice meets Part 68 encoded anal og content or billing prote ction specifications.

End user/customer will be responsible to file an affidavit with the local exchange carrier when connecting an unprotected CPE to a 1.544 Mbps of Subrate digital services.

Until such time as subrate terminal equipment is reg istered for voice applications, the affidavit for subrate service s is waive d.

AFFIDAVIT FOR CONNECTION OF CUSTOMER PREMISES EQUIPMENT TO 1.544 MBPS

AND/OR SUBRATE DIGITAL SERVICE S

For the work t o be performed in the certified territory of _________________(Telco Name) State of ________________County of ___________________________ I.________________________(name),___________________________________(business address) ______________(telephone number) representing _____________________ _(name of customer), a custom er located at _____________________(address) _________(telephone number) being duly sworn: state:

I have the re sponsibility for the operation and mai ntenance of the terminal equipment to be connected to _________ 1.5 44 Mbps and/or ______ ___ Subrate digital services. The terminal equipm ent to be connected complies with Para. 68 of the FCC rules except for the encoded a nalog content and billing protection speci fications . W ith respec t to encoded analog content and billing pr otection.

() I attest that all oper ations associated with the establishment, maintenance, and adjustment of the

digital CPE wit h respect to encoded analog content and enco ded billing protection information continuously complies with Part 68 of the FCC Rules and Regulations.

() The digital CPE does not transmit digital signals containing encoded analog conten t or billing

informat ion which is intended to be decode d w ith the telecom m unications network.

() The encode ana log content and billing protection is factory set and is not under th e control of the

customer.

I attest that the operator(s)/maintainer(s) of the digital CPE responsible for the establishment, maintenance, and adjustment of the enc oded analog content and billing information has (have) be en trained to perform these functions by successfully hav ing complet ed one of the following (Check appropriate block).

() a. A training c ourse provide d by the man ufactu rer/gra ntee of the e qui pment us ed t o encode

analog signal(s); or

() b. A trainin g course provided by the custom er of authorized represent ative, using training mat erials

and instructions prov ided by the manufacture/grantee of the used to encode an alog signal(s); or

() c. An independent training course (e.g. trade school or technical institution) recogni zed by the

manufacturer/grantee of the equipment used to encode analog signal(s); or

() d. In lieu of the proceedi ng training requirements, the operator(s)/m aintainer(s) is (are) under the

control of a supervisor trained in accordance with ________ (circle one) above.

I agree to provide _______________ (Telco’s name) with proper do cum entation to demonstrate compliance with the infor m at i o n as provi de d in the prec e di ng para g ra phs, if so re quest ed .

_________________(Signature) ________________(title) __________(date)

Subscribed and Sworn to before me this ____ day of _____, 19__

__________ _______________

Notary Public My commission expires:________________

EQUIPMENT ATT A CHMENT LIMITATIONS

NOTICE: The Industry Canada label identifies certified equipment . Th is certificati on means that the equipmen t meets telecom munic ations net work prote ctive , operat ional and s afet y requi rement a s prescribed in the appropriate Termina l Equipment Technical Requirements document(s). The Department does not gua rantee the equipment will operate to the user’s satisfaction.

Before installing this equipment, users should ensure tha t it is permissible to be connected to the facilitie s of the loca l tel ecom municati ons com pany. The eq uipme nt must al so be inst alle d usin g a nd acceptable method of connection. The customer should be aware tha t compliance with th e abo v e conditions may not prevent degradation of service in some situations.

Repairs to ce rtified equipment should be coordinated by representative de si gnated by the su pplier. Any repairs or alt erati ons m ade by t he user to this equi pment, or equi pment ma lfun ctions, may giv e the telecommunications company cause to request the user to dis connect the equipment.

Users should ensure for their own protection that the elec trical ground connections of the power utilit y, telephone lines and internal metallic water pipe system, if present, are connec ted together. This precaution may be particularly important in rural areas.

Caution: Users should not attempt to make s uch connections themselves, but should contact the appropriate electric inspection authority, or electrician, as appropriate.

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CONTENTS

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Cisco MGX 8220 Installation and Configur ation

Release 5.0, Part Number 78-6430-03 Rev. D0, November 2003

Objectives xxiii Audience xxiii Cisco WAN Switching Product Name Change xxiii Organization xxiv Related Documentation xxv Conventions xxv Obtaining Documentation xxvi

World Wide Web xxvi Document ation C D-R OM xxvi Ordering Documentation xxvii Document ation Fe edb ack xxvii

Obtaining Technical Assistance xxvii

Cisco.com xxvii Technical Assistance Center xxviii

CHAPTER

1 Introducing the Cisco MGX 8220 Shelf 1-1

New in Release 5.0 1-1 Cisco MGX 8220 System Overview 1-1

Configurat ion Exam ples 1-2 Service Interfaces 1-3 Scalability 1-4 Standards-Based Conversion to ATM 1-4 Traffic Management 1-5 ATM Local Management Interface 1-5 Cisco MGX 8220 Shelf 1-5 Cisco MGX 8220 Cards 1-6 Cisco MGX 8220 Management 1-9

CHAPTER

2 Common Equipment Description 2-1

Overview 2-1 Cisco MGX 8220 Shelf 2-2

Cisco MGX 8220 Backplane 2-3

Contents

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Typical Cisco MGX 8220 Hardware Weights 2-4

Power Entry Options 2-4

DC Powered Systems 2-4 AC Powered Systems 2-5 DC Power Drain and Circuit Protection 2-6

Cooling Assembly 2-6

Main Cooling Assembly 2-7 Booster Cooling Assembly 2-8 Plenum Exhaust Chamber 2-8 Spacer Unit 2-8

Cooling Assembly Power 2-8 Optional Cisco-Supplied Cabinet 2-9 Core Module Overview 2-10

Cisco MGX 8220 ASC Shelf Controller 2-12

Broadband Network Modules 2-14

Service Resource Modules 2-22

CHAPTER

3 Managing the Cisco MGX 8220 Shelf 3-1

Summary of User Interface Connections 3-1

Functions of the User Interface 3-1

Physical Connections 3-2

Protocols 3-2

Matrix of User Interface Combinations 3-3 User Interface Access Ports 3-3

Maintenanc e Port 3-3

Control and LAN Ports 3-4

In-Band Access 3-6 User Accounts and Privilege Levels 3-7

Accounts 3-7

Privilege Levels 3-7

Passwords 3-7 Setting-Up Management Connectivity to the Cisco MGX 8220 Shelf 3-8

Setting-Up IP Addresses for Control Port, LAN Port, or In-Band Access 3-8

Connecting Using the Maintenance Port 3-9

Connecting Using the Control Port 3-10

Contents

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Connecting using an In-Band Connection 3-11

Connecting using the LAN Port 3-11 Command- Line Int erfac e 3-11 Establishing the Cisco MGX 8220 to Cisco BPX Connection 3-12 Cisco MGX 8220 Management Through SNMP 3-12 Structure of the MIBs 3-13 TFTP User Interface 3-15

Upgrading Firmware 3-15

Configuring and Collecting Statistics 3-17

Statistics Collection File Format 3-18

Configuration Save and Restore 3-18

CHAPTER

4 MGX 8220 Service Modules 4-1

Introduction 4-1 Frame Relay Servic e Mod ule s (FRSMs ) 4-2

FRSM Connection Types 4-2

FRSMs for T1 and E1 lines 4-7

FRSMs for High Speed Serial Lines 4-9

Frame Relay Access Service Module 4-11 ATM UNI Service Module 4-17 AUSM-8T1/E1 4-20 Inverse Multiplexer for ATM Trunk Module 4-23

IMATM LED Indicators 4-25 Circuit Emulation Service Modules 4-26

Circuit Emulation Service Module (4-port) 4-26

Circuit Emulation Service Module (8-port) 4-29 Service Module Back Cards 4-32

T1 Backcards 4-32

X.21 Back Cards 4-32

HSSI Back Cards 4-33

Redundancy Back Cards 4-33

CHAPTER

5 Service Configuration 5-1

Setting up a Frame Relay Connection 5-1

Via Cisco WAN Manager 5-1

Via the Command-Line Interface 5-2

Contents

Cisco MGX 8220 Installation and Configuration

Release 5.0, Part Number 78-6430-03 Rev. D0, November 2003

AUSM Connections 5-6

Via Cisco WAN Manager 5-6 Via the Command-Line Interface 5-6

CESM Connec tions 5-7

Via the Command-Line Interface 5-8

FRASM Conne ctio ns 5-8

Via the Command-Line Interface 5-8 FRAS BNN Connections 5-9 STUN Connec tions 5-10 BSTUN Connections 5-12

Configuring IMA TM Conn ect ions 5-14

Download procedure 5-14 Adding the Line 5-14 Checking the Alarms on a ds1 Line 5-15 Clearing Any Alarms Related to ds3 5-15 PLCP Configuration for ds3 5-17

Configuring the Clock Source 5-18

Commands Related to AIM Group 5-20 Add the Channel Route Entry 5-20 Configuring the Port Queue 5-22

CHAPTER

6 MGX 8220 in Stand-alone Applications 6-1

Using the Command-Line Interface 6-1

In-band Access 6-2 Out-of-Band Access 6-2

LMI Interface 6-2 Configuring th e BNM 6-2 Setting Trap Managers 6-3 VPI/VCI Mapping 6-3

VC Connections 6-4 VP Connections 6-4

Provisioning FRSM Channels 6-5 Provisioning AUSM Channels 6-5

CHAPTER

7 Installation and Start-Up 7-1

Safety Recommendations 7-1

Contents

Cisco MGX 8220 Installation and Configur ation

Release 5.0, Part Number 78-6430-03 Rev. D0, November 2003

Maintaining Safety with Electricity 7-2

Grounding 7-2 Site Preparation 7-3

Rack Space 7-3

Power 7-3

Cooling 7-4 Unpacking 7-4

Unpacking Each Container 7-5

Parts Checklist 7-5 Rack-Mounting the MGX 8220 Units 7-5

Horizontal Positioning 7-6

Vertical Positioning 7-6

Cooling Configuration Guidelines 7-7

Rack-Mou nting th e Modu les 7-9

Rack-Mounting the Plenum or Spacer 7-11

Mounting the Electrostatic Wrist Strap 7-11

Colocating Cisco Units in the Same Rack 7-12 Connecting Power for DC Systems 7-13

DC Power to the Shelf 7-13

DC Power to the Fan Cooling Assembly 7-15 Connecting Power for AC Systems 7-17

AC Input Power 7-17

Available Power 7-17

Monitoring Power Supply Status 7-17

Rear Panel Connectors 7-17 Cable Management 7-21

Plenum Chamber Kit 7-21

Main Cooling and Booster Cooling Kit 7-22 Cable Routing 7-24

Power Cable Routing 7-24

Routing Data Cables 7-25 Readying the Cards 7-26

Removing and Installing the Front Cards 7-26

Removing and Installing the Back Cards 7-27 Making the BNM Trunk Connection 7-28

Contents

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Making the Service Interface Connections 7-29 Alarm Output Connection 7-30 Making Extern al Cloc k Conne ctio ns 7-30 Attaching a Control Console 7-30

Dumb Terminal onto the Maintenance Port 7-30 Workstation onto the Control Port 7-30

Initial Start-Up of the MGX 8220 Shelf 7-31

Initial Configuration 7-31

CHAPTER

8 Repair and Replacement 8-1

Preventive Maintenance 8-1 Troubleshooting the MGX 8220 Shelf 8-1

General Troub lesho ot ing Proc edu res 8-2

Procedure for All Errors 8-3

Displayed Log Message Format 8-4

Log Codes 8-5

ASC Log Codes 8-5 BNM Log Codes 8-11 SRM Log Codes 8-14 AUSM Log Codes 8-16

Replacing Part s 8-20

Replacing a Front Card 8-21 Replacing a Back Card 8-21 Replacing a DC Power Entry Module 8-22 Replacing the Cooling, Booster, Plenum, and AC Power Assemblies 8-23

APPENDIX

A Cabling Summary A-1

Introduction A-1 T3 Trunk Cabling A-1

IMATM T1/E1 Connectors A-1

Frame Relay Cablin g A-2

T1 Cabling A-2 E1 Cabling A-3 X.21 Port Connect ors A-4 HSSI Port Connectors A-4 Cabling for RJ-48 Connectors on T1 and E1 Ports A-5

Contents

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DC Power Cabling A-6 AC Power Cabling A-7 Control and Clock Cabling A-7

Maintenance and Control Ports A-7

Modem Cable A-8

External Clock Input Cabling A-8 External Alarm Cabling A-10 Standard MGX 8220 Cables A-11 Redundancy Y-Cables A-11

APPENDIX

B Specifications B-1

BNM-T3 Specification B-1

Intershelf Link B-1

Card General B-2 BNM-E3 Specification B-3

Intershelf Link B-3

Card General B-4 BNM-155 Specifications B-5

Intershelf Link Specific atio ns B- 5 ASC Specification B- 7 SRM-T1/E1 Sp ecif icat ion B-8 FRSM-4T1 Specification B-9

Service Interface B-9

System Inte rface B-10

Virtual Circuits B- 11

Card General B-12 FRSM-4E1 Specification B-13

Service Interface B-13

System Inte rface B-14

Virtual Circuits B- 15 FRSM-8T1 Specification B-17

Service Interface B-17

System Inte rface B-18

Virtual Circuits B- 18

Card General B-20 FRSM-8E1 Specification B-20

Contents

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Service Interface B-20 System Inte rface B-21 Virtual Circuits B- 22

FRSM-HS2 Sp ecif ication B-24

Errors and Alarm Handling B-24 External Interface Specification B-24

AUSM Specification (4 Port) B-27

Service Interface (T1) B-27 Service Interface (E1) B-27 ATM Interface B-28 Virtual Circuits B- 28 Card General B-29

CESM-4T1/E1 Specification B-30

Service Interface (T1/E1) B-30 Virtual Circuits B- 31

MATM Specification B-32

Physical Layer Interface T1: B-32 Physical Layer Interface E1 B-33 Physical Layer Interface T3 B-33 Physical Layer Interface E3 B-34 AIM Groups and Links B-34 Card General B-35

APPENDIX

C Firmware Upgrade and Downgrade Procedures C-1

Introduction C-1 Using the Procedure Tables C-2 Finding the Right Procedure C-3 Standard Upgrade and Downgrade Procedures C-3

Procedure 1—Standard Upgrade, 1-Core Card Set C-4 Procedure 2—Standard Downgrade, 1-Core Card Set C-5 Procedure 3—Standard Upgrade, 2-Core Card Set C-6 Procedure 4—Standard Downgrade, 2-Core Card Set C-8 Procedure 5—Standard Upgrade, 1-Core Card Set C-10 Procedure 6—Standard Upgrade, 2-Core Card Set C-11 Procedure 7—Standard Downgrade, 1-Core Card Set C-13 Procedure 8—Standard Downgrade, 2-Core Card Set C-14

Contents

Cisco MGX 8220 Installation and Configur ation

Release 5.0, Part Number 78-6430-03 Rev. D0, November 2003

Procedure 9—Standard Upgrade, 1-Core Card Set C-16

Procedure 10—Standard Upgrade, 2-Core Card Set C-17

Procedure 11—Standard Downgrade, 1-Core Card Set C-18

Procedure 12—Standard Downgrade, 2-Core Card Set C-20 Graceful Upgrade and Downgrade Procedures C-21

Procedure 13—Graceful Upgrade, 1-Core Card Set (SM only) C-22

Procedure 14— Gr acef ul Dow ng rade, 1-C ore Card Se t (SM only) C-23

Procedure 15—Graceful Upgrade, 2-Core Card Set C-24

Procedure 16— Gr acef ul Dow ng rade, 2-C ore Card Se t C-26

Procedure 17—Graceful Upgrade, 1-Core Card Set (SM only) C-28

Procedure 18— Gr acef ul Dow ng rade, 1-C ore Card Se t (SM only) C-29

Procedure 19—Graceful Upgrade, 2-Core Card Set C-31

Procedure 20—Graceful Upgrade, 2-Core Card Set C-32

Procedure 21—Graceful Upgrade, 2-Core Card Set C-34

Procedure 22— Gr acef ul Dow ng rade, 1-C ore Card Se t (SM only) C-36

Procedure 23—Graceful Upgrade, 2-Core Card Set C-37

Procedure 24— Gr acef ul Dow ng rade, 1-C ore Card Se t (SM only) C-39

Procedure 25—Graceful Upgrade, 2-Core Card Set C-40 Description of Upgrade/Downgrade Terminology C-42

Standard C-42

Graceful C-42

One-cc C-42

Two-cc C-42

chkflash C-42

Version C-42

tftp put C-43

File Size C-43

dspfwrevs C-44

Slot-Specific and Card-Type-Specific SM Firmware C-44

flashStart Add r and flashEn dAd dr C-45

resetsys C-45

softswitch C-45

dspadrxlat C-46

dsptotals C-46

donotupdatestandby C-46

Contents

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Compatibility C-46 clrallcnf C-47 resetsys or clrallcnf C-47 Save/Restore ASC Configuration C-47 Upgrade/Downgrade C-47 Save/Restor e SM Co nfigur atio n C-48

FIGURES

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Figure 1-1 Cisco MGX 8220 Shelf 1-2 Figure 1-2 Cisco MGX 8220/Cisco BPX Switch Relationship 1-3 Figure 1-3 Remote Cisco MGX 8220 Configuration 1-3 Figure 2-1 Front View of the Cisco MGX 8220 Shelf with Cards Installed 2-3 Figure 2-2 Rear View of the Cisco MGX 8220 Shelf 2-3 Figure 2-3 Cisco MGX 8220 Power Entry Module 2-4 Figure 2-4 AC Power Assembly (front without grill) 2-5 Figure 2-5 AC Power Assembly (rear) 2-5 Figure 2-6 DC Power System 2-6 Figure 2-7 Cisco MGX 8220 Shelf Configuration 2-7 Figure 2-8 Cooling Assembly 2-7 Figure 2-9 Cisco MGX 8220 Cabinet 2-9 Figure 2-10 Cisco MGX 8220 Top Level Block Diagram 2-11 Figure 2-11 ASC Cards 2-12 Figure 2-12 Ethernet Extender 2-13 Figure 2-13 BNM-T3/E3 Cards 2-15 Figure 2-14 Cisco MGX 8220 ATM Trunk Cell Format 2-17 Figure 2-15 CC, FFCI, EFCI, Supv, PTI, and CLP Fields 2-17 Figure 2-16 BNM-155 Cards 2-19 Figure 2-17 SRM-T1/E1 Card 2-23 Figure 2-18 AX-SRM-3T3 Cards 2-25 Figure 3-1 Ma int en ance Por t Acces s 3-4 Figure 3-2 Control Port Access 3-5 Figure 3-3 Control Port Access using a Terminal Server 3-5 Figure 3-4 LAN Port Access to the Cisco MGX 8220 Shelf 3-6 Figure 3-5 In-band Access Example 3-6 Figure 3-6 MI B Tree Str uct ure 3-13 Figure 3-7 Services Tree 3-15 Figure 4-1 BPX 8620 Network with Networking Interworking Connections 4-3 Figure 4-2 BPX Network with Service Interworking Connections 4-4 Figure 4-3 Example of T1/E1 FRSM Front Cards 4-8

Figures

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Figure 4-4 Example FRSM-HS1 Front Card 4-10 Figure 4-5 Using FRASM for a STUN Connection 4-12 Figure 4-6 Using FRASM for a BST UN Connection 4-13 Figure 4-7 Using FRASM for a FRAS BNN Connection 4-14 Figure 4-8 Ex am ple FRASM Fron t Car ds 4-15 Figure 4-9 AUSM Cards 4-18 Figure 4-10 AUSM-8T1/E1 Front Card 4-22 Figure 4-11 IMATM-T3-T1 and IMATM-E3-E1 Front Cards and RJ48-T3T1/E3E1 Back Card 4-23 Figure 4-12 IMATM Application 4-24 Figure 4-13 IMATM Used with Remote MGX 8220 4-25 Figure 4-14 CESM Card 4-27 Figure 4-15 8-Port CESM Cards 4-30 Figure 4-16 T1/E1 Backcards 4-34 Figure 4-17 T1/E1 Redundancy Back Cards 4-35 Figure 5-1 Cisco WAN Manager Connection Manager Screen for the MGX 8220 Shelf 5-2 Figure 5-2 Frame Relay Connection through an MGX 8220 and BPX Network 5-3 Figure 5-3 ATM to-ATM Connection Screen 5-6 Figure 6-1 MGX 8220 Stand-alon e Configurat ion 6-1 Figure 7-1 Mounting Rail Positions 7-6 Figure 7-2 Rack-Mounted MGX 8220—One- and Two-Shelf Configurations 7-7 Figure 7-3 Rack-Mounted MGX 8220—Three-Shelf, Four-Shelf, and Six-Shelf Configurations 7-8 Figure 7-4 Use the Angle Bracket to Secure the Module to the Rack 7-9 Figure 7-5 Keyhole Style Bracket 7-11 Figure 7-6 Electrostatic Wrist Strap Kit 7-12 Figure 7-7 Installed Wrist Strap Kit 7-12 Figure 7-8 Multisystem Racks 7-13 Figure 7-9 48V DC Male Power Receptacle Viewed Facing the Rear of the Shelf 7-14 Figure 7-10 PEM Cable Clamp 7-14 Figure 7-11 DC Power Cabling for One-Shelf and Two-Shelf Racks 7-15 Figure 7-12 DC Cabling for Three-Shelf and Four-Shelf Racks 7-16 Figure 7-13 AC Power Assembly Block Diagram 7-18 Figure 7-14 AC Cabling for One-Shelf and Two-Shelf Racks 7-19 Figure 7-15 AC Cabling for Three-Shelf and Four-Shelf Racks 7-20 Figure 7-16 Cable Management Kit on the Plenum Chamber 7-22 Figure 7-17 Installation of the Cable Manage ment Kit on the Cooling Module 7-23

Figures

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Figure 7-18 Routing Power Cables at the Shelf 7-24 Figure 7-19 Routing Power Cables at the Cooling Assembly 7-25 Figure 7-20 Routing Data Cables at the Cooling Assembly 7-25 Figure 7-21 Front Card Insertion/Extractor Lever 7-26 Figure 7-22 Connecting BNM-T3 or BMN-E3 Cables 7-28 Figure 7-23 Cabling for Redundant BNM Cards 7-29 Figure A-1 IMATM T1/E1 Pigtail Cables A-2 Figure A-2 RJ-48 Connectors A-6 Figure A-3 DC Power Connections A-6 Figure A-4 Null Modem Cable A-8

Figures

Cisco MGX 8220 Installation and Configuration

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TABLES

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Table 1 Organization xxiv Table 2-1 ASC LED Indicators 2-14 Table 2-2 BNM LED Indicators 2-18 Table 2-3 BNM-155 LED Indicators 2-21 Table 2-4 SRM-T1/E1 LE D Indicat o rs 2-24 Table 3-1 UI Function/Ac ces s Path/ Protoc ol Comb inat io ns 3-3 Table 3-2 Format of Statistics Collection File 3-18 Table 4-1 AUSM LED Indicators 4-19 Table 4-2 AUSM-8T1/E1 LED Indicators 4-21 Table 4-3 IMATM LED Indicators 4-25 Table 4-4 CESM LED 4-Port Indicators 4-28 Table 4-5 CESM 8-Port LED Indicators 4-31 Table 4-6 Configurable Line Speeds in bits per second 4-32 Table 5-1 addcon Parameters 5-5 Table 6-1 VPID Ranges 6-4 Table 7-1 Plenum Chamber Kit 7-21 Table 7-2 Cooling and Booster Kit 7-22 Table 8-1 Troubleshooting the MGX 8220 Shelf Node 8-2 Table 8-2 Log Code Ranges for Various Cards 8-5 Table 8-3 ASC Log Codes 8-5 Table 8-4 BNM Log Codes 8-11 Table 8-5 SRM Log Codes 8-14 Table 8-6 AUSM Log Codes 8-16 Table A-1 Trunk Cables A-1 Table A-2 T3 Conne c tor Pin Assignm en ts A-1 Table A-3 T1 Trunk/Circuit Line Cabling Specification A-2 Table A-4 T1 Conne c tor Pin Assignm en ts A-2 Table A-5 E1 Trunk/Circuit Line Cabling Specification A-3 Table A-6 E1 Conne c tor Pin Assignm en ts (unba lan ce d) A-3 Table A-7 E1 Trunk/Circuit Line Cabling Specification A-3 Table A-8 E1 Conne c tor Pin Assignm en ts A-4

Tables

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Table A-9 Pinouts for X.21 DB-15 Connectors A-4 Table A-10 Pinouts for SCSI-II Connector A-5 Table A-11 DC Power Wiring A-6 Table A-12 AC Power Cables A-7 Table A-13 Maintenance and Control Port Cabling A-7 Table A-14 Maintenanc e and Control Por t Pin Assignm en ts A-7 Table A-15 External Clock Cabling—T3/E3-D or SMF-155 A-9 Table A-16 T1 Connector Pin Ass ignm en ts for EXT. TMG A-9 Table A-17 E1 Clock Cabling— T3 /E3 -B A-9 Table A-18 E1 Connector Pin Ass ignm en ts for EXT.TM G (unb alan ced) A-9 Table A-19 External Alarm Cabling A-10 Table A-20 Network Alarm Pin Assignments A-10 Table A-21 Standard Cables Available from Cisco A-11 Table A-22 Redundancy Y-Cables A-11 Table C-1 Standard Firmware Upgrade/Downgrade Version Matrix C-2 Table C-2 Graceful Firmware Upgrade/Downgrade Version Matrix C-3

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Preface

Welcome to the r ef er en ce m an u al fo r the Cis co M GX 8220 e dge concen tr ato r R elease 5. 0. This section discusses

• Object ives

• Audience

• Cisco WAN Switching Product Name Change

• Relat ed D o cu m en ta tio n

• Conventio ns

Objectives

This publication de scribes the features, functions, construction and operation of the Cisco MGX 8220 edge co ncen tr ator Re lea se 5.0. Ref er to the Cisc o MGX 8 220 Co mmand R e fer e n ce, Re leas e 5 fo r d etail s on the M G X 8 220 co m mand lin e i nt er fac e an d th e for m at s o f all th e comman d s.

Audience

This publi ca tio n is de sign ed for the perso n in sta lli ng th e MGX 8220 s helf , who shoul d be fa mil iar wi th electronic circuitry a nd w i ring p r act ice s an d h ave exper ien ce as an ele ct ro n ic or electrom ech an ical technician. It is also intended for the network administrator who will configure the MGX 8220 shelf. The installers and network administrators should also be familiar with Cisco switches, Frame Relay connections, and Cisco wide area networks. During the init ial installation of an MGX 8220 shelf, it is also helpful to have a system administrator on-hand who is familiar with your network and UNIX servers.

Cisco WAN Swi tching Product Name Change

The Cis co WAN Switchi n g p roduc ts have new names. T h e BPX s w it c h is now ca lled the C is co BPX 8620 w i de -a re a sw i tch . The A X I S s he lf is now call ed th e Ci s co M G X 822 0 ed ge co nc entrator. Any sw itc h in the IG X sw itch family (IG X 8 , I G X 1 6, an d I GX 32 w id e - ar ea s w it ch es ) is now called the Cisco IGX 8400 series-wide area switch. The IGX 8 switch is now called the Cisco IGX 8410

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Organization

wide-area switch. The IGX 16 switch is now called the Cisco IGX 8420 wide-area switch, and th e IGX 32 switch is now called the Cisco IGX 8430 wide-area switch. Cisco StrataView Plus is now called Cisco WAN Manager.

Organization

This publication contains the following chapter and appendices.

Table 1 Organization

Chapter Title Description

Chapter 1 Introducing the Cisco MGX 8220 Shelf Describes the feat ures and fu n cti on s o f R ele as e 5. 0 o f th e

MGX 8220 shelf.

Chapter 2 Common Equipment Description Provides a detailed description of the MGX 8220 shelf, the

core cards, slot allocation, power modules and fan assemblies.

Chapter 3 Managing the Cisco MGX 8220 Shelf Descr ib e s t h e var ious faciliti e s provi de d for m anagi ng the

MGX 8220 shelf.

Chapter 4 M GX 822 0 Service M odules Provides a detailed description of the MGX 8220 service

modules th at ar e availab le in Rele as e 5 .0 .

Chapte r 5 Serv ice Config ura ti on Covers the con fig ur ation of a service module co nnecti o n. Chapter 6 MGX 8220 in Stand-alone Applications Describes how to use the MGX 8220 shelf as a stand-alone

processor.

Chapter 7 Installation and Start-Up Covers site prepara tio n , m e ch an ical installation , in s t all in g

and readying cards, making T3, E3, T1, E1, and power connectio n s an d in itial sta rt- up o f th e sh el f.

Chapter 8 Repair and Replacement Descr ib es maintenanc e a nd troublesh ootin g p r ocedur es and

covers the rep lac emen t of c ar ds, p ower modules, an d fan assembly.

Appendix A Cabling Summary Provides in fo r m at io n details o n T1, E1, T3 , and E3 and

control ter mina l cab ling .

Appendix B Spec ifications Provides in form atio n abou t the MG X 8220 system

specificat io ns .

Appendix C Firmware Upgrade and Downgrade

Procedures

Provides information about upgrading firmware on your MGX 8220 syste m.

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Related Documentat ion

The following Cisco publications contain additional information related to the operation of the Cisco WA N sw itching networ k:

• Release 9.2, Cisco WAN Manager (formerly StrataView Plus) network management system

docum entation

–

Cisco WAN Manager Installation and Configuration

Provides general description, configuration, and installation instructions for the Cisco WAN Manager (formerly StrataView Plus) network management system.

–

Cisco WAN Manager Operations

Provides procedure s for using the Cisco WAN Manager (formerly StrataView Plus) network management system.

• Relea s e 9 .2 , C is c o WAN Swit ch ing docu m en tation

–

Cisco BPX 8600 Series Installation and Configuration

Provides a general description and configuration and installation instructions for the Cisco BPX 8600 se ries br oadban d swit ches.

–

Cisco BPX 8600 Series Reference

Provides a general description and technical details of the Cisco BPX 8600 series broadband switches .

–

Cisco IGX 8400 Series Installation and Configuration Provid es a gen eral desc riptio n and conf igur ati on and ins talla tion ins truct ions for th e multi band

Cisco IGX 8400 series nodes.

–

Cisco IGX 8400 Series Reference

Provides a general description and technical details of the multiband Cisco IGX 8400 series switches .

–

Cisco WAN Switching Command Reference

Provides detailed information on the command-line interfaces used in operating a Cisco WAN switch in g n e t wo r k.

–

Cisco WAN Switching SuperUser Command Reference

Provide s detaile d in fo r m at io n on the S up er U s er c ommand- l in e interfac e u s ed in o p e ra ti n g a Cisco WAN switching network.

–

Cisco MGX 8220 Command Reference, Release 5.0

Provide s deta iled in for matio n on the comma nd -line in terfa ces use d in ope ratin g a Cis co MGX 8220 node.

Conventions

This publ ication u ses t h e f ollow in g co nvention s t o c onvey inst ru ct io ns and in for m at io n. Command descriptions use these conventions.

• Commands and keywords are in boldface.

• Arguments for which you supply values are in italics.

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• Elements in square brackets ([ ]) are optional.

• Alternati v e b ut requ ire d keywords are groupe d in bra c es ({ } ) a nd are separa ted b y v erti cal ba rs ( | ).

Examples u s e t hes e co nventions.

• Terminal sessio n s an d in for mation th e sy stem displays are i n screen font.

• Information you enter is in boldface screen font.

• Nonpri nt ing ch ar act er s, s u ch a s p as swo rds, are in an g le br ack ets (< >) .

• Default responses to system p rompt s are in square brackets ([ ]).

Notes, cautions, an d w ar n in gs us e th e f o ll owi ng co nvent io ns and sy m b o ls.

Note Means reader take note. Notes contain helpful suggestions or references to material not covered in

the man ua l.

Caution Mean s reader be careful. In this situ at io n, you m i gh t do so mething t hat could r e su lt in equ ip m ent

damag e or los s of da ta.

Warning

Means danger. You are in a situation that could cause bodily injury. Before you work on any equipment, you must be aware of the hazards involved with electrical circuitry and be familiar with standard practices for preventing accidents. T o see t ranslated versions of the warning, refer to the Regulatory Compliance and Safety document that accompanied the device.

Obtaining D ocumentation

The following sections explain how to obtain documentation from Cisco Systems.

World Wide Web

You can access th e most cur re nt C isc o d o cu men tation o n t h e World Wide Web at the f o ll owing U R L:

http:/ /w w w.cisco.com

Translated do cu mentation i s availa ble at the fol lowin g U R L:

http://w w w.cisco.c om/publi c/ cou n tr ie s _l an gu ag es.shtml

Documen t at i on CD-ROM

Cisco docum en tatio n and addi tional li terat ure ar e available in a Cisco Do cume ntati on CD- ROM package, which is shipped with your product. The Documentation CD-ROM is updated monthly and may be more current than printed documentation. The CD-ROM package is available as a single unit or through an annual subscription.

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Orderi ng D ocum entation

Cisco documentation is available in the following ways:

• Registered Cisco Direct Customers can order Cisco product documentation from the Networking

Products M a rk etP l ace :

http:/ /w w w.cisco.com/cg i- bin/or de r/order_r oot.pl

• Registered Cisco.com users can order the Documentation CD-ROM through the online

Subscription Store:

http://www.cisco.com/go/subscription

• Nonregistered Cisco.com user s can orde r documentation through a local acco unt represe ntati ve by

calling Cisco corporate headquarters (California, USA) at 408 526-7208 or, elsewhere in North America, by calling 800 553-NETS (6387).

Documentat i on Feedback

If you are reading Cisco product documentation on Cisco.com, you can submit technical comments electronically. Click Leave Feedback at the bottom of the Ci sco Documentation home page. After you complete the form, print it out and fax it to Cisco at 408 527-0730.

Yo u c an e-mail your c o m m e nts to bu g- doc@c i s co . co m . To submit your comments by mail, use the response card behind the front cover of your document, or

write to th e followi ng address : Cisco Systems

Attn: D oc ument R es o ur c e Connect io n 170 West Tasman Drive San Jose, CA 95134-9883

We appreciate your comments.

Obtaining Technical Assist ance

Cisco p rovi des Cisco.com a s a star t in g po in t fo r al l t ech n ica l assistan ce. Customers and p ar t ne rs can obtain doc umentation, troubleshooting tips, and sample configurations from online tools by using the Cisco Technical A ss ist an ce Center (TAC) Web Site. Ci sco .co m re gis te re d u se rs h ave c om p l ete access to the technical support resources on the Cisco TAC Web Site.

Cisco.com

Cisco.com is t he founda tion of a suite of int eractive, n etworke d s ervices that provides immediate, open access to Cisco information, networking solutions, services, programs, and resources at any time, from anywhere in the world.

Cisco.com is a highly integrated Interne t application and a powerful, easy-to-use tool that provides a broad range of features and services to help you to

• Streamline business processes and improve productivity

• Resolve technical issues with online support

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• Download and test software packages

• Order Cisco learning materials and merchandise

• Register for online skill assessment, training, and certification programs

You can self-register on Cisco.com to obtain customized information and service. To access Cisco.com, go to the follow in g U RL:

http:/ /w w w.cisco.com

Technical A ssi stance Center

The Cisc o TAC is availab le to a ll customer s wh o need tech ni cal ass i stance wit h a C isco produ ct , technology, or solution. Two types of support are available through the Cisco TAC: the Cisco TAC Web S it e and the Ci sc o TAC Escalation Cen t er.

Inquiries to Cisco TAC are categorized according to the urgency of the issue:

• Prio rity level 4 (P4)—You need information or assistance concerning Cisco product capabilities,

product installation, or basic product configuration.

• Priority level 3 (P3)—Your network performance is degraded. Networ k functionality is noticeably

impaired, but most business operations continue.

• Prio ri ty leve l 2 (P2)—Your production network is severely degraded, affecting significant aspects

of business operations. No workaround is available.

• Prio rity level 1 (P1)—Your production network is down, and a critical impact to business

operations will occur if service is not restored quickly. No workaround is available.

Which Cisco TAC resource you choose is based on the priority of the problem and the conditions of service co nt r act s , wh en ap p licable.

Cisco TAC Web Site

The Cisco TAC Web Site allows you to resolve P3 and P4 issues yourself, saving both cost and time. The site provides around-the-clock access to online tools, knowledge bases, and software. T o access the Cisco TAC Web Site , g o to the fo ll owi ng U R L :

http:/ /w w w.cisco.com/tac

All customers, partners, and resellers who have a valid Cisco services contract have complete access to the technical support resources on the Cisco TAC Web Site. The Cisco TAC Web Site requires a Cisco.com login ID and password. If you have a valid service contract but do not have a login ID or passwo r d, go to the following URL to r e gi s te r:

http:/ /w w w.cisco.com/r egis t e r /

If you ca nnot resolve your technical issues by using th e Cisco TAC Web Site, and you a r e a Cisco. com registered user, you can open a case online by using the TAC Case Open tool at the following URL:

http:/ /w w w.cisco.com/tac/caseo pen

If you have Internet access, it is recommended that you open P3 and P4 cases through the Cisco TAC Web Site.

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Cisco TAC Escalation Center

The Cisc o TAC Escala tion Cen ter addresses iss u es t h at are class i fied as priorit y level 1 o r pri or it y level 2; these cl as sifi cat io ns ar e assigned when severe n e t wor k d egrad ation sig n ific an tly i mp act s business operations. When you contact the TAC Escalation Center with a P1 or P2 problem, a Cisco TAC e ng in ee r wi ll au to m a tically op en a case.

To obtain a directory of toll-free Cisco TAC telephone numbers for your country, go to the following URL:

http:/ /w w w.cisco .com/wa rp /public/687/D irect or y /D irTAC.shtml

Before calling, please check with your network operations center to determine the level of Cisco support services to which your company is entitled; for example, SMARTnet, SMARTnet Onsite, or Network Support ed Ac count s ( NS A). I n a ddit io n, p lea se hav e a v ai la ble yo ur serv ic e a gree men t number an d y our product serial number.

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CHAPTER

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Introducing the Cisco MGX 8220 Shelf

i s c o M G X 8 2 2 0 E d g e C o n c e n t r a t o r

This chapter in cl ud es the fo ll owin g to p ics:

• New in Release 5.0, page 1-1

• Cisco MGX 8220 System Overview, page 1-1

• Configuration Examples, page 1-2

• Service Interfaces, page 1-3

• Scalability, page 1-4

• Standards-Based Conversion to ATM, page 1-4

• Traffic Management, page 1-5

• ATM Local Management Interface, page 1-5

• Cisco MGX 8220 Shelf, page 1-5

• Cisco MGX 8220 Cards, page 1-6

• Cisco MGX 8220 Management, page 1-9

New in Release 5.0

This section provides a very brief description of the new Cisco MGX 8220 shelf features that were added since Re leas e 4.1.

• Frame s er vice module (FR S M - H S2) su pp o rts u p to tw o hi g h sp ee d ser ial ( H SS I) i nt er fac es at

speeds up to 52 Mbps

• Standards-based IMA on the AUSM card

• V.35 and X.21 support on the Frame service module (FRSM-HS1)

Cisco MGX 8220 System Overview

The Cisc o MG X 8 2 20 E dg e C o nc en tr at or i s a st an da r ds- b ased , carrier-cla ss co n cen trat o r t h at concentr at es h ig h volumes of tr affic for tr an sp or t over Fr am e R elay and ATM backbones. The Cisco MGX 8220 adapts incoming data to 53-byte ATM cells using industry-standard ATM adaptation layers (AALS) for transport over the ATM network. A fully-redundant bus architecture provides 640-Mbps capacity for high throughput and application performance.

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Chapter

Cisco MGX 8220 Syst em Overview

This chapter describes the features and functions of Release 5.0 of the Cisco MGX 8220 edge concentr at or.

Figure 1-1 is an illustration of a Cisco MGX 8220 switch.

Figure 1-1 Cisco MGX 8220 Shelf

The Cisco MGX 8220 IP+ATM edge concentrator offers a wide range of services in a single, compact aggregation shelf. This enables service providers to build an integrated multiservice network to deliver Frame Relay, ATM, an d p r ivate lin e s e rv ic es. By con cen tr at in g na rrow ba nd t ra ffic over a w id e- ar ea ATM network backbone, the Cisco MGX 8220 reduces equipment costs and makes efficient use of trunking resources. This protects a service provider’s investment in e quip m en t an d all ows the rap id deploy m e n t of new servic es as require d.

Configu rat i on Examples

The Cisc o MGX 8 2 20 e dg e co nce nt r ato r can be use d to co n cen tr at e s e rvices for a C isco BPX 8600 series sw itch eithe r fr o m a l oc al or r emo te locatio n . Th e C isco MGX 8220 ca n a lso b e u s ed as a stand alone edg e co nc en tr ato r.

Cisco BPX 8600 Series Switch

When configured as part of a Cisco BPX 8600 series wide-area switch, the Cisco MGX 8220 edge concent rato r a llows modular sca lin g o f t he s ervi ce nod e ca pac ity w it hou t re qui ring ad di tion al swi tche s. All Cisco MGX 8220 edge concentrator shelves in a service node are logically managed as an integrated part of the service node.

Each Cisco MGX 8220 shelf connects to the Cisco BPX switch across one of the following:

• T3 or E3 ATM to a BNI or T3/E3 BXM module

• SMF SONET ATM link to a BXM-155-8 port or BXM-155-4 port

H8238

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Cisco MGX 8220 System Overview

Thus, the Cisco MGX 8220 shelf supports aggregation of traffic up to 80 T1 or E1 access ports or up to 124 0 64-K bps subsc ri bers , o nt o a si ngle T3, E3, or OC -3c t run k, u s ing o nl y a s ingle por t on th e Cis co BPX switc h.

Figure 1-2 shows the Cisco MGX 8220 switch relationship.

Figure 1-2 Cisco MGX 8220/Cisco BPX Switch Relationship

Remote Locations

For locations with limited switching requirements, the Cisco MGX 8220 can be physically remote from the Cisco BPX 8600 series switch using IMA trunk machines as shown in Figure 1-3.

Figure 1-3 Remote Cisco MGX 8220 Configuration

Standalone Cisco MGX 8220 Edge Concentrator

The Cisco MGX 8 2 20 edge concentr ato r is no t limite d to attachmen t t o th e Cisco BP X 8 6 00 s er i es switch. In standalone operation, the Cisco MGX 8220 trunk can attach to any ATM switch to provide service ag grega tio n .

Service Int erfaces

The Cisco MGX 8220 supports the following services and interfaces:

• Frame Relay UNI/NNI

–

56 kbps, nx64 kbps, T1 , E1, HSSI , X .2 1

–

Frame Relay to ATM network and service internetworking

• High-sp eed F r ame Relay

• ATM Fram e UN I

–

56 kbps, nx64 kbps, T1 , E1, HSSI , X .2 1

• ATM UNI/NNI

–

T1, E1, nxT1 (IMA), nxE1 (IMA)

T1, E1, T3, or

HSSI/X.21

Service Interface

Lines

BPX 8620

Broadband ATM Service

T3, E3 or SONET ATM Feeder Connection

S6176

MGX 8220

T1, E1 or T3

Service

Interface

Lines

Long Distance

IMA Trunk

BPX 8620

Broadband ATM Service

S6177

MGX 8220

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• Frame for warding

–

56 kbps, nx64 kbps, T1 , E1, HSSI , X .2 1

• Circui t emulat ion

–

T1, E1, nx64 kbps

• ISDN switched access

• SNA services

–

SDLC a n d bisync, D S -0, D S -0A

Physical connectivity is provided through individual HSSI, X.21, T1 or E1 ports, V.35, or through channeli zed T1 /E1 inter fa ces.

Using the servi ce reso urce mo dule (SRM) , mult iple T1 inte rface s can be support ed on physica l T3 lin es. Frame ba s ed ser v ice s o n T 3 an d E 3 hi gh sp ee d lin es ar e a ls o su pp o rted .

The Cisco MGX 8220 shelf also supports the use of inverse multiplexing for ATM (IMA) to provide ATM trunking below T3/E3.

Scalability

The Cisco MGX 8220 edge concentrator aggrega tes traffic from as many as 80 T1 or E1 ports onto a single port of a multiport broadband trunk card. This high port density maximizes use of the Cisco BPX 8600 series high-capacity switch fabric. Each 9-inch rack-mount shelf supports up to 80 DS-1 or E1 ports, or m ore than 2000 64-kbps users. The Cisco MGX 8220 edge concentrator has a compact footprint that minimizes the space required within central offices.

Standards-Based Conversion to AT M

All use r in fo r mation re ceived by th e Cisco M G X 82 2 0 interfa ces is converted into 53 -by t e ATM cells using s t a n d a r d ATM adap ta tion l ay e r s ( AA Ls) fo r trans p or t over th e ATM backb one ne tw or k. Cel l segmentatio n a nd rea ss em b ly (SA R) and ot h er adapt ation fu nction s ar e distr ibu ted to each in ter face module to elimin ate s y s tem bottle necks. T he followi n g A A L stand ar d s ar e u sed :

• AAL1 for circuit emulation services.

• AAL5 an d FR- SS C S (Fr am e R e l ay Ser v ice S pe ci fic Co nvergence Su b lay er ) f or F r ame Relay

(FR to ATM network interworking).

• For Fra me Relay to ATM service interworking, bo th tr an s p aren t and tra nsl at io n modes ar e

suppor t e d to m ap FR to na tive ATM AAL 5.

• AAL5 for Frame forwarding.

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Traffic Management

Traffic management is provided by the Cisco MGX 8220 Connection Congestion Management (ACCM) featu r e. Th is f eature is a v ir tu al s o urce/virtu al d esti na ti on r at e- ba sed closed lo op f eed b ack scheme betwe en nodes based on ForeSight and the ATM Forum Available Rate specification. Periodica lly the r oun d t r ip d elay (RTD) of a cel l t o th e f ar en d an d ba ck is c al cu lat ed f or e ach actual connection. The RTD is u sed to determine h ow f re q ue nt ly th e F ore Sight ra te adjustm en t c e l ls ar e s e nt to the far e nd . B as e d on availa bl e b an d w id th an d cu rren t access rat e, every few m i cr ose co nd s a ForeSigh t cell is tr an sm it ted to the far en d wi th any ra te adjus tments th at a re necessary to make better use of the available bandwidth (rate is adjusted up, down, or fast down). The Cisco MGX 8220 MIB includ e s rate ( M I R , P I R, and QIR) an d a d ju s tm ent (up%, d own%, an d fast -d ow n%) ob je c ts.

ATM Local Managem ent I nterface

ATM local management interface (ATM LMI) operates betwe en the Cisco MGX 8220 shelf and the Cisco BPX 8600 series. The ATM LMI is used to communicate change of status of semi-permanent connection s. The ATM LMI protoc o l confor m s to the p r ot ocol sp e cified i n ITU-T S Recomm endat io n Q.2931, Sept. 1994. The ATM LMI also supports optional proprietary extensions to the ATM LMI for the reporting of node information and BNI queue configurations.

The two end points of the ATM LMI signaling are an ATM LMI process in the BCC in the Cisco BPX 8600 series and an ATM LMI process in the ASC in the Cisco MGX 8220 shelf. The ATM LMI PDUs are transpo rted ove r an A A L5 co nn ec tio n ( V PI= 3/ V CI =3 1 ) bet w een t he B N I on th e Cisco BPX 8600 series side and the BNM on the Cisco MGX 8220 side. The ATM LMI process in the Cisco BPX 8600 series can support ATM LMI connections for up to 16 Cisco MGX 8220 shelves.

The Cisco A TM LMI extension (which must be specifically enabled) uses a node update status message, which is sent (C isco BPX 8600 to Cisco MGX 8220 shelf or Cis co MGX 8220 s helf to Cisco BPX 860 0) whenever a change in node name, node IP address, major alarm status, or minor alarm status occurs. The message can optionally contain Qbin status, thereby allowing Cisco MGX 8220 to configure the BNI port egres s queues.

Cisco MGX 822 0 Shelf

Physically, the Cisco MGX 8220 shelf consists of cards in a 19-inch rack-mounted shelf. The shelf can b e p ower ed ei th er f rom a -48V D C so ur ce o r fr o m a 220–240V AC source. The DC

versi on inc lud es DC po wer ent ry modu les that can be moun te d in the shel f. The AC ve rsi on requ ir es an external rack-mounted, AC power module. Both versions require a rack-mounted cooling assembly. Multiple Cisco MGX 8220 shelves can be mounted in the same rack sharing power and cooling assembli es. Fo r more informa ti on on the shel f and power options, see Chap ter 2, “Common Equipment Description.”

The Cisco MGX 8220 shelf contains 16 s lots. Each slot ca n accommoda te a fron t card and a back ca r d. Six slots ar e reserved for co mmon equ ip men t module s . Th e co mm o n eq ui pm en t mo d ul es a re th e co re modules required for the system to operate. Service modules (SMs) occupy the other 10 slots and provide com muni catio n and tran sfer cap abilit y.

The front row of the shelf is used for function modules. These cards perform the more complex functions within the unit (for example, Frame Relay to ATM conversion).

The back row is used for line modules. These cards provide interfaces to one or more transmission lines connected t o th e C isco MGX 8 2 20 s h el f (f o r exam pl e, t h e t ru n k l ine to the C isc o BP X sw i tch or an RS-232 line to a control terminal).

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The front car d co mm u n ica tes with t he b ack ca r d us i ng a backpl an e. T hi s b ack p lan e de s ign allows the function m odules to be replaced or upgraded without disturbing the physical cabling.

• The “Cisco MGX 8220 Cards ” section on p age 1-6 briefly summar izes the front (fun cti on) modul es

available for use with the Cisco MGX 8220.

• Chapter 2, “Common Equipment Description,” includes a description of core modules.

• Chapter 4, “MGX 8220 Service Modules,” desc ri be s th e vari ou s servic e modules in detail.

Cisco MGX 822 0 Cards

Cisco MGX 8 220 card s are ins tall ed in pair s cons istin g of a front car d (functi on modul e) and a m atchi ng back card (line module). These cards are installed in the same numbered slot. Communication between slots is achieved through buses in the shelf backplane.

The ASC and the BNM m odules must always be present in an Cisco MGX 8220 shelf and are re ferred to as the core modules. The Cisco MGX 8220 shelf supports redundant core modules where one ASC/BNM s et is an act ive set and a seco nd A S C /B N M is a standby se t. I n th e even t o f a malfunct io n , the stan db y set aut om a ti cal ly takes over as the ac tive set. Th e SRM is op ti on al. If present, i t i s p ar t of the core card set, with switchover to the standby set if the active BNM or ASC malfuncti ons.

The following modules do not use b ack ca rds :

• SRM-T1/E1 card—This mod u le in cl ud es o n ly a fro nt ca rd . See the “Service Reso u rc e M o du les”

section on page 2-22 for more information.

• Service modules that use the SRM-3T3 distribution bus. See the “AX-SRM-3T3” sectio n on

page 2-24 for more information.

Cards Supported in the Cisco M G X 8220

• Cisco MGX 8220 Shelf Controller (AX-ASC)

AXIS Shelf Controller (ASC) is a pair of cards that provides overall control of the shelf. These cards also prov id e li ne int er faces to th e ma i nt en an ce an d con tro l p or ts u sed fo r user co nfigu r ati on and she lf ma na gem ent.

Broadband Network Modules

• Broadband network module (AX-BNM-T3)

This is a p air o f car d s th at pr ovid es a UN I /NN I in te rf ace to th e attached Ci sc o B PX s wi tc h over a T3 ATM in ter fa ce.

• Broadband network module (AX-BNM-E3)

This is a pair of cards that provides a UNI/NNI interface to the attached Cisco BPX switch over an E3 ATM in ter fa ce.

• Broadband network module (AX-BNM-155)

This is a pair of car d s th at p rov id es the int er fac e to the attached Ci sco BP X sw itch over a SONET ATM interface.

Frame Service Modules

• Frame service module for T1 (AX-FRSM-4T1)

This card provides int erfaces for up to four T1 li nes, each of which can support one 56 kbps or one nx64 kbps FR-UNI, FR-NNI port, ATM-FUNI, or a Frame forwarding port.

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• Frame service module for E1 (AX-FRSM-4E1)

This card provides int erfaces for up to four E1 li nes, each of which can support one 56 kbps or one nx6 4 kbp s FR- U N I, F R -N NI , ATM-FUNI, or F r ame f or war di ng p ort .

• Frame ser vice module fo r ei gh t T1 por ts (AX -F RSM - 8 T1 )

This card pr ov id es i nt er fac es f o r up t o eig h t fractional T1 lines, each of which can support one 56 kbps or one nx64 kbps FR-UNI, FR-NNI port, ATM-FUNI, or a Frame forwarding port. The AX-FRSM-8T1 supports fractional and unchannelized T1 port selection on a per-T1 basis.

• Frame ser vice module fo r ei gh t E1 por ts (AX -F RSM - 8 E1 )

This card pr ov id es i nt er fac es f o r up t o eig h t fractional E1 lines, each of which can support one 56 kbps or one nx64 kbps FR-UNI, FR-NNI, ATM-FUNI, or Frame forwarding port. The AX-FRSM-8E1 supports fractional and unchannelized E1 port selection on a per-E1 basis.

• Frame ser vice modu le for eight channelized T1 ports (AX-FRSM-8T1-C)

The FRSM- 8 T1-C al low s full DS0 and nxDS0 channelization of the T1s and E1s, for a maximum of 192 ports per FRSM-8T1-C. Using the FRSM-8T1-C, up to 192 fully channelized T1 lines can be ope rated simultaneou s l y o n the Ci s co MGX platfo r m .

• Frame ser vice modu le for eight channelized E1 ports (AX-FRSM-8E1-C)

The FRSM-8E1 -C allows full DS0 and nxD S 0 ch an ne lization o f th e E1s, fo r a m a xi mu m o f 248 ports per FRSM-8E1-C. Using the FRSM-8E1-C, up to 192 fully channelized E1 lines can be operated si m ultaneously o n th e C is c o M GX pl atf o rm .

• Frame service module for high speed serial (AX-FRSM-HS1)

The FRSM-HS1 provides four X.21 interfaces for full-duplex communications at up to 10 Mbps. This card also supports the two port HSSI back cards with SCSI-2 connectors.

• Frame service module for high speed serial (MGX-FRSM-HS1/B)

The FRSM-HS1/B supports up to four V.35 high speed serial (HSSI) interfaces. This card also support s th e t wo p o rt H SS I ba ck ca rd s w i th S CSI - 2 co nn ec to rs.

• Frame service module for High Speed Serial (MGX-FRSM-HS2)

This card supports up to two high speed serial (HSSI) interfaces at speeds up to 52 Mbps.

• Frame Relay acces s service module ( F RA SM - 8T1)

This card provides interfaces for up to eight T1 lines for the support of IBM SNA networks. Both Binary Synchronous Communications (Bisync) and Synchronous Data Link Control (SDLC) protocols are supported.

ATM UNI Service Modules

• ATM UNI service module for T1 (AX-AUSM-4T1)

This card prov id es in te rfaces for up to four T1 lin es, each of w hi ch can sup p ort o n e T1 ATM UNI or ATM NNI.

• ATM UNI service module for E1 (AX-AUSM-4E1)

This card prov id es in te rfaces for up to four E1 lin es, each of w hi ch can sup p ort o n e E1 ATM UNI or ATM NNI.

• ATM UNI service module for T1 (AX-AUSM-8T1)

This card provides interfaces for up t o eight T1 lines, each of which can support one T1 ATM UNI or ATM NNI pl u s additi on a l s u pport for st a n dards- based IMA.

• ATM UNI service module for E1 (AX-AUSM-8E1)

This card provides interfaces for up t o eight E1 lines, each of which can support one E1 ATM UNI or ATM NNI pl u s additi on a l s u pport for st a n dards- based IMA.

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• ATM U N I s ervice modul e f o r T1, Version B (M G X -AU S M -8T1/ B )

This card provides interfaces for up t o eight T1 lines, each of which can support one T1 ATM UNI or ATM NNI pl u s additi on al supp ort for s tanda rd s - based I M A. Versi on B a d ds the c apabil it y to extract clocking information from the T1/E1/IMA trunk to feed into the Cisco MGX 8800 system clock. This supports ATM forum-compliant IMA (1.0 spec).

• ATM U N I s ervice modul e f o r E1, Version B (M G X -AU S M -8E1/ B )

This card provides interfaces for up t o eight E1 lines, each of which can support one E1 ATM UNI or ATM NNI pl u s additi on al supp ort for s tanda rd s - based I M A. Versi on B a d ds the c apabil it y to extract clocking information from the T1/E1/IMA trunk to feed into the Cisco MGX 8800 system clock. This supports ATM forum-compliant IMA (1.0 spec).

Inverse Multiplexing for ATM Trunk Modules

• Inverse mu ltiplexin g fo r ATM trunk m o du l e —T3 to T1 (AX-IMATM-8T1/B)

This car d act s as a n ex te nsi on o f th e C isco BPX B N I car d an d pe rmi ts the Cisco BPX ATM trunk to be used over multiple (up to 8) T1 lines instead of a single T3 line.

• Inverse mu ltiplexin g fo r ATM trunk m o du l e —E3 to E1 (AX-IMATM-8E1/B)

This car d act s as a n ex te nsi on o f th e C isco BPX B N I car d an d pe rmi ts the Cisco BPX ATM trunk to be used over multiple (up to 8) E1 lines instead of a single E3 line.

Circuit Emulatio n Ser vic e Modu les

• Circuit emulation service module for T1 (AX-CESM-4T1)

This card provides interfaces for up to four T1 lines, each of which is a 1.544 Mbps unstructured synchronous data stream.

• Circuit emulation service module for E1 (AX-CESM-4E1)

This card provides interfaces for up to four E1 lines, each of which is a 2.048 Mbps unstructured synchronous data stream.

• Circuit emulation service module for T1 (AX-CESM-8T1)

This card provides interfaces for up to eight T1 lines, each of which is a 1.544 Mbps structured or unstructured synchronous data stream.

• Circuit emulation service module for E1 (AX-CESM-8E1)

This card provides interfaces for up to eight E1 lines, each of which is a 2.048 Mbps structured or unstructured synchronous data stream.

Service Resource Modules

• Service resource module (AX-SRM-T1E1/B)

The optiona l SRM-T 1E1/ B prov ides t hree major fun cti ons fo r ser vice modul es; bi t erro r rate teste r (BERT) of T1 an d E 1 lin e s a n d po r ts , loops back of ind ivid u a l nx64 channels toward the customer premises equipment (CPE), and 1:N redundancy for the service modules.

• Service resource module (MGX-SRM-3T3)

The SRM-3T3 provides three major functions for service modules; bit error rate tester (BERT) of T1 and E1 line s and ports, loops back of individual nx6 4 channe ls toward the CPE, an d 1:N redundancy for the service modules. The SRM-3T3 provides the additional capability of supporting multiple T1 c h annels over T3 lines o n the S R M a n d distribu ting t ho s e chann el s to T1 s er vi c e module s in t he shelf .

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Cisco MGX 822 0 Management

The func tions and operation of the Cisco MGX 8220 shelf are achi eved through downloaded firmware. The firmware controls th e overa ll op er at io n of t he sh elf a nd r esp o nd s to configu ra ti on co m mands.

The current status and configuration parameters of the Cisco MGX 8220 modules are maintained in a Management Information Base (MIB). The firmware updates the MIB when changes in status and configuration occur. The MIB can be interrogated using SNMP commands.

Most functions of t he C is co M G X 8 22 0 sh elf R el eas e 5 .0 can b e accessed t hro ug h th e g r ap hical u s er interface (G UI ) o f th e C is c o WAN Manage r (C W M ) , R elease 9. 2. CWM is a n etw or k an d el ement management system that enables operations, administration, and maintenance of WAN-multiservice networ ks.

Note CWM was formerly known as StrataView Plus.

The Cisco MGX 8220 supports the following user interfaces:

• The ASC modul e includes three por ts for user input of management com mands. Another means of

management access is provided in-band over the AT M trunk.

• The m ain te na nc e p or t is a simpl e R S -23 2 p or t for d ir ect co n ne cti on t o an al ph a-numeric t er min al

into wh ich y o u can type commands throu gh a command-li ne in terface (C LI ) .

• The control port (SLIP protocol only), the LAN (Ethernet) port and the in-band ATM connection

all support the CLI (using Telnet), TFTP, and SNMP protocols for communicating with the Cisco MGX 8220 shelf.

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Common Equipment Description

This chapter describes the required common equipment hardwa re that forms the core of the Cisco MGX 8220 shelf. The opti onal service modules are described in Chapter 4, “MGX 8220 Service Modules”. This chapter includes the following sections:

• Over vi ew, page 2-1

• Cisco MGX 8220 Shelf, page 2-2

• Powe r Entr y Opti o ns, pa ge 2-4

• Cooling Assembly, page 2-6

• Optional Cisco-Supplied Cabinet, page 2-9

• Core Module Overview, page 2-10

Overview

The Cisco MGX 8220 is a 19-inch rack-mountable shelf. This shelf provides 16 slots for holding the modules (card sets) that provide the functionality. Each slot is designed to house two cards, a front card and a bac k c a rd. Cards ar e in st alled in a s lo t as a tw o car d s et . A b ack p la ne ru n s ac ro ss a ll 16 sl ot s t o provide sig na l c on ne ct io ns be tw een f ron t an d ba ck car d s, and betw een slots. The ba ck pl an e al so provides power distribu tion to all slots from dual (redundant) power entry modules installed in the bottom of the shelf.

All exter na l l in e c on ne ct io ns ar e m a de o n t h e b ack c ar ds at the rea r of the shelf . T hese inclu de Frame Relay lines, the ATM trunk line, and RS-232 lines for the control console.

The Cisco MGX 8220 includes the following c ommon equipment:

• Cisco MGX 8220 shelf

–

Card ca g e

–

Backplan e

–

Power entry module housing

• Core cards in s tal led in th e s h el f

–

Cisco MGX 8220 shelf controller (ASC)

–

Broadband network module (BNM)

–

Optional se r vi ce r es ou r ce m od u le (SR M )

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• Main cooling a ssembly

Cooling booster assembly (for certain multi-shelf configurations only)

• Power entry module (for DC powered systems only)

• AC power assembly (for AC powered systems only)

In addition, an optional Cisco-supplied cabinet is available.

Cisco MGX 8220 Shelf

The Cisc o MGX 8220 s helf i s a 19-in c h rac k-mo unt able uni t confo rm ing t o the E IA RS- 310 -C stand ar d and in cl u d es the following mea sur e m e nts:

• 8.75 i nches ( 5u ) high

• 17.45 in ch es wide

• 21.25 inches deep (without cards) or 23 inches deep with back cards and fan connector

The shelf contains a car d cage with 16 slots. The s lots are numbered 1 to 16 from the le ft looking at the front of the shelf.

A backplane runs across the card cage spanning all 16 slots. The backplane is positioned approximately 14 inches from the front of the cage allo wing a funct ion module ca rd to be inserted in th e s lot from th e front and a smaller line module card to be inserted in the slot from the rear.

Slots 1 a nd 2 are reserved for BNM cards (single or a redundant pair) and s lots 3 and 4 are reserv ed for ASC cards (single or a redundant pair). Slots 15 and 16 are reserved for the SRM (single or redundant pair). Slots 1, 3, and 15 work together as an active or standby set. The same is true for slots 2, 4, and

16. Slots 5 to 14 (1 0 s lots) are available for serv ice modules (or IMATM modul es ). For 1:N red undan cy of T1/E1 service modules, standby cards must use slots 12, 13, and 14.

The shelf can hou s e redu ndant po w er ent ry mod ul es, which are s mal l car ds in sta lle d hor iz onta l ly in th e bottom rear of the shelf. The Cisco MGX 8220 shelf is powered by –48V DC power sources (single or redundant pair). Each power entry module is equipped with a circuit breaker. The shelf also provides a power recep tacle for a c ab le to th e coolin g ass embly, which is m o u nt ed in t he ra ck b e low t he Cisco MGX 8220 shelf (or shelves).

The ba ckpla ne provides redun dant sy s te m buses f or comm unicati on bet w e en s lots, power di s tr i bu ti on to all slot s, and co mmuni cati on be twee n fro nt and back cards. Fig ure 2-1 and Figure 2-2 sho w t he fron t and rear views of the Cisco MGX 8220 shelf.

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Figure 2-1 Front View of the Cisco M GX 8220 Shelf with Cards Installed

Figure 2-2 Rear View of the Cisco MGX 8220 Shelf

Cisco MGX 822 0 Backplane

The Cisco MGX 8220 backplane contains a main system bus, and the cell bus for communication between card slots. The cell bus consists of two pairs of unidirectional buses (for redundancy), which are used f o r tr an sfe rring cell s between th e c e ll bus slave modules (FRSM, AUSM, A S C) a nd t he cell bus master (BNM).

The backplane also contains a local bus, which permits the ASC to configure and monitor the BNM and SRM, a BERT bus for bit error rate testing, and a redundancy bus for support of 1:N service module redundancy.

The backplane distributes –48V D C power t o all card slot s, and all mod u les ar e h o t i nsertable .

ACT

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• • • • •

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• • • • •

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12345678910111213141516

H8243

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DB15-4T1 DB15-4T1 DB15-4T1 DB15-4T1 DB15-4T1 DB15-4T1 DB15-4T1 DB15-4T1 DB15-4T1 DB15-4T1

16151413121110987654321

ASCASC

1B power connector

1A power connector

P1 cooling assembly connector

••

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Power Entr y Options

Typical Cisco MGX 8220 Hardware Weights

The typic al ha rd w ar e w ei gh ts ar e s h own i n th e f o ll owing table:

Powe r Ent ry Opt io ns

DC Powered S ystem s

In DC-powered systems, Cisco MGX 8220 supports one or two power entry modules (PEMs) each of which can be connected to its own independent 48V DC supply. The PEMs are installed horizontally, side by side i n t he bo tt om re ar of th e s h el f. (Se e F igu re 2-3 .) Each modul e i s power ed fro m a 4 8 V DC power source using three wires.

• Positive ground

• –48V DC

• Safety ground

The 48V DC cable is conne cted to the power en try module through a 3-position E uro-block connector. The two modules provide power supply redundancy. Each power entry module is capable of supplying enough power for a fully loaded Cisco MGX 8220 shelf.

An ill ustrati on of a PEM is s how n in Fig ure 2-3 .

Figure 2-3 Cisco MGX 8220 Power Entry Module

Hardware Weight (lbs)

Cisco MGX 8220 shelf with 16 boards 68 Cisco MGX 8220 main cooling unit 20 Cisco MGX 8220 booster cooling unit 14 Cisco MGX 8220 plenum 8 Average single Cisco MGX 8220 board 1.9

OFF

DC connector

On switch (black)

Off switch (red)

+Return

Safety ground

-48V DC

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Chapter

Powe r Entry Optio n s

Each power entry module contains its own circuit breaker, which also acts as an ON/OFF switch. The circuit breaker is closed by pressing in the large black button until it latches in the closed position. The circuit breaker is opened by pressing the smaller red button. The DC PEM also includes a bracke t that is attach ed t o t h e PE M t o pr ovid e cable s train relie f. S ee Ch ap te r 7, “Installat io n an d S tar t-U p ” for details .

AC Powered Systems

In AC-powered systems, a separate AC power assembly is required. (See Figure 2-4 and Figure 2-5.) This ass emb ly i s r ack -m o un te d un d er th e sh el f co ol in g ass embly in th e ra ck an d is availa b le in b ot h a single and double AC source line version. The power assembly has a modular design and can be configured with up to six power suppl y modules, each module providing 875W of 48V DC power. The power assembly can provide power for up to four Cisco MGX 8220 shelves, requiring three power supply modules, or four for a (1 for N) redundant power supply configuration. The rear panel has four connectors w hich supply 48V D C p ow er to the s h elves. Th e first t hr e e ( 1A , 2A , and 3A ) c o n nector s also provide power monitori ng information to the Cisco MGX 8220 shelf. Another three connectors (1B, 2B, and 3B) on the rear panel provide monitoring information for the second half of the power supply. Special cables ar e u sed f r om th e r ear of the pow er assembly to the rear o f th e s he lves to f eed power and m o n ito r data to t he s h elves.

The AC power asse mbl y m ea sur es

• 5.25 inches (3 mounting units) high

• 17.45 inches wide

• 23 inches deep

Figure 2-4 AC Power Assembly (front without grill)

Figure 2-5 AC Powe r Assem bly (rear)

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Primary AC

source

Power and

monitor cables to

MGX 8220 shelf

Optional secondary AC source

Power connectors

& monitor

Monitor connectors

4A 3A 2A 1A3B 2B 1B

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Cooling Assembly

DC Power Drain and Circuit Protection

Each card in an C isco MGX 8220 shelf draws an aver ag e o f 2 1W w ith a wo r st- case shelf c ur r en t of

14.40A. The circuit breaker in the DC power entry module (PEM) is rated at 15.00A. The Cisco MG X 8 2 20 c ir cu it s ar e p r otect ed as foll ows:

• Backpl an e h as a 5 A fa st- bl ow fu se f o r each slot p o sit io n.

• Eac h bo ard ha s a 1.5A c ir cu it bre aker in th e - 4 8V DC l in e to the D C /DC co nverte r.

Each Cisco MGX 8220 board is equipped with a DC/DC converter (Shindengen—HGG05006 or AT&T—JW030A), which has an autom atic current limited to 5V output.

A schematic of the DC powe r system is shown in Figure 2-6.

Figure 2-6 DC Power System

Cooling Assembly

This section describes the cooling assembly that cools the Cisco MGX 8220 shelf and equipment:

• Main Cool in g Ass emb ly, page 2-7

• Boo ster Co ol ing A ssem bly, page 2-8

• Plenum Exhaust Chamber, page 2-8

• Spacer Unit, page 2-8

• Cooling Assembly Power, page 2-8

The main cooling unit houses the fans that circulate air through the shelf. This unit is mounted below the shelves. This unit is capable of cooling up to two Cisco MGX 8220 shelves in the same rack. Racks that contai n more th an two s helves requi re a b o os t e r u ni t t o pr ovide a dd ition al c o ol ing. Th e c ooling assembly is powered from the main shelf.

The plenum or a spacer unit is mounted above the shelves to exhaust the warm air. A single Cisco MGX 8220 shelf is shown in Figure 2-7. For more information on rack assembly and

configurati on, see Ch apte r 7, “Inst allat ion and St art-U p.”

PEM

B A C K P L A N E

Battery

power

-48V RTN

Safety

ground

-48V

RTN

DC/DC

converter

Conductive edge

Circuit board

Earth ground

Safety ground

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Figure 2-7 Cisco MGX 8220 Shelf Conf iguration

Main Cooling Assembly

The main coolin g assembly provides cooling for up to two Cisco MGX 8220 shelves and is mounted i n the rack be low th e sh el f ( or sh el ves) . Th e coolin g asse m bl y co nsists of fa ns t h at draw air t hr o ug h th e front grill and up through the shelf.

An illustration of the cooling assembly is shown in Figure 2-8.

Figure 2-8 Cooling Assembly

The main co o li ng assembly measures

• 5.25 inches (3 mounting units) high

• 17.45 inches wide

• 22 inches deep

H8241

Plenum chamber

Cisco MGX 8220 shelf

Cooling assembly

Power assembly (AC version only)

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Booster Co ol i ng A ssembly

The booster cooling assembly is used in racks with more than two Cisco MGX 8220 shelves. It is mounted ab ove the sh e lves con ta i ning t he m ain co ol ing ass e m bly an d below the shelves to which th e booster cooling is to be provided. The booster cooling assembly consists of fans that draw air from the shelve s be low and exh a u s t a ir u p wa r d th rough the sh e l f or sh elves a bove . Each b oo s ter sup ports an additi on a l tw o Cisco MGX 8 220 she lves.

The booster cooling assembly measures

• 3.5 in c h es ( 2 moun ting units) high

• 17.45 in ch es wide

• 22 inches deep

Plenum Ex haust Chamber

The plenu m ex ha ust ch amber is u s ed in instal lat io n s w he re th e to p of t he u ni t mu s t be en cl ose d. Th e plenum chamber is mounted in the rack immediately above the shelf or shelves. The chamber exhausts air from th e shelf to t he r ear o f th e r ack. The p l enum ch am b er is the exha ust o pt io n re co mm e nd ed by Cisco Systems.

The exhaust p len u m ch amber measures

• 3.5 in c h es ( 2 moun ting units) high

• 17.45 in ch es wide

• 22 inches deep

Spacer Un it

The spac er u ni t i s an al ternative metho d f or ex ha ust in g air f rom the rac k an d can t ake th e p la ce of the exhaust plenum. The spacer does not support th e a tt a ch m ent of a cable ma nageme n t kit. If u s ed, the spacer un it is m ou n ted i n th e r ac k i m mediately ab ove th e sh el f or sh el ves.

The spacer u ni t me asu r es

• 1.75 inches (1 m ounting unit) high

• 17.45 in ch es wide

• 22 inches deep

Cooling Assembly Power

Power is supplied to a connector at the rear of the cooling assemblies by a cable running from the bottom middle rear of the Cisco MGX 8220 shelf.

The assemblies provide output signals to the shelf. Using these signals, the cooling assembly performa n ce can b e monitored by t he B NM car d s. Th e cable de liver in g DC p ower to t he co ol in g assembly from the Cisco MGX 8220 shelf also carries these signals to the BNM using the backplane. The signals are such that the model of cooling assembly can be identified and the speed of each fan can be mo n ito r e d . E ach fa n ge n erates a fixed number of squ ar e - w ave pu ls e s p e r r evolution, allowing the speed of the fan to be determined.

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Optional Cisco-Supplied Cabinet

A cabinet is available from Cisco to install the Cisco MGX 8220 shelf, the Cisco BPX 8600 series wide-area switch, the ESP, and the Cisco IGX 8400 series wide-area switch. Systems preconfigured in a Cisc o- s u pplied cabinet can b e o r dered f r o m Cisco.

The cab in et is a 1 9- in ch r ack with p a n els on a ll sides excep t th e f r on t. T h e r ear panel is a lo uvered hinged do or. The to p an d bo tt om are also cove re d . The cabinet is equipped w it h cast er s , b rake s , an d leveling b o lts (see Figure 2- 9) . H o le s at th e base allow th e cabinet to b e secure d to t he fl o or f o r earthqu ake safety.

Note Modu les are inst all ed in t he cabine t i n th e s a m e manner as installed in a 19-inch rack.

Modules are ins tal led by in s er tin g th em i nt o t he fr on t of the cabinet and a tta ch in g them to th e in t er na l racks. Al l c a b les ar e co n ne ct ed th r ou gh the rear d o or.

Figure 2-9 Cisco MGX 8220 Cabinet

The ve rt ic a l h eight of t he cabinet ( i nc l u ding ca s ters) i s 8 0.31 in ch e s pr ov iding 71 .81 inc h es (41 ra ckmounti ng u n its) of ver t ical rack space.

The cabin et is 2 3 in ch es wide and 3 6 i n ch es d eep . Since Ci sco M G X 82 2 0 mod u les ar e t yp i cal ly 22 inches deep, the cabinet provides approximately 12 inches of space behind the mounted Cisco MGX 8220 modules for cables and cable management hardware.

23.09"

36"

77.81" 71.81"

Front Side Rear

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Core Module Overview

Cisco MGX 822 0 mo dules include a larger front card to provide the functi onality of the module, and a smaller b ac k car d to p r ovi de th e co nn ect o rs and i nt er fac es f o r exte r nal l in es. The ASC and th e B N M are referre d to as th e co re mod u les. Both mod u les m u st b e in s ta lled in the sh elf . I f an op ti on al S RM is also ins tal led , it is cons id er ed a co r e m o d ule .

If redundancy is required, a second set of ASC and BNM modules must be configured. Failure of an ASC or BNM c au s es s w itchover to th e redundant A S C, BNM, an d SRM cards. Failure of the ac t ive SRM car d on ly caus es s w i tch over i f th e S R M is also i ncluded in th e redun da nt s et .

This section describes the following core module equipment:

• Cisco MGX 8220 ASC Shelf Controller, page 2-12

The ASC provides overall control of the shelf. Each Cisco MGX 8220 shelf must have at least one ASC. The ASC back card also provides RS-232 and Ethernet ports to attach a control terminal or workstation.

• Broadband Network Modules, page 2-14

The BNM p rovid es th e i nt er fac e t o th e C isco BPX n et wo rk. The con ne cti on t o th e C isco BPX network is made in one of the following two interface combinations:

–

T3 or E3 line u sin g t he ATM STI, UNI, o r NN I pr ot ocol and the Cis co BPX B NI o r B XM ca rds.

–

SONET OC-3 or STS-3c line using ATM UNI/B-ICI protocol.

• Service Resource Modules, page 2-22

The optional SRM communicates with all service modules over a bit error rate test (BERT) bus and provides the capability for testing T1 and E1 and subrate service module lines. The SRM can issue various l oopup and l oo pdown c o m m an ds towar d the cu s tomer premis es e q uipment (CP E ), and generate test bit p att er ns fo r any u ser s p eci fied nx64-kbps port. The SRM can also provide 1:N redund anc y for FRSM, AUSM, and CESM cards. Th e SRM- 3T3 pro v ides the ad diti on al ca pabi li ty of support in g mul ti ple T 1 cha nnel s ov e r T3 li nes on t he SRM a nd di st rib ut ing th ose cha nn els to T1 service modules in the shelf.

The cor e m od u les work w i th the service mo du le s to p r ovide the followi ng f u nc tio n s :

• Accept customer traffic received over the service interface lines, adapt them to A TM, and multiplex

them onto the BNM trunk for transmission to the Cisco BPX network.

• Accept A TM cells received over the BNM trunk, map them into the specified service protocols, and

transmit them over the appropriate service interface.

Note Chapter 4, “MGX 8220 Service Modules”, contains information on the functionality of the various

service modules.

A simplified block diagram of the Cisco MGX 8220 hardware is shown in Figure 2-10. As shown by the dashed lines, th e A S C , S R M , and cell bus ar e al l 1: 1 r ed u nd an t . Th is means t h at o n e A S C , B N M , and SRM slot set is attached to one cell bus, and the remaining ASC, BNM, and SRM slot set is tied to the other cell bus.

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Figure 2-10 Cisco MGX 8220 Top Level Block Diagram

Line Module

Service

Redundancy

Module

Broadband

Network

Module

Service Module

Cell Bus

Service

Interfaces

Service

Interfaces

Up to 10 Service Modules

Redundant Cell Bus

Optional

Redundant

SRM

Optional

Redundant

ASC

Optional

Redundant

BNM

T1 or E1 Clock Input

Alarm Interface Fan Monitor Interface

T3, E3 or SONET ATM line to BPX network

RS-232 Maintenance Port

RS-232 Control Port

Ethernet Port

BERT Bus

Local Bus

S6178

MGX 8220

Shelf

Controller

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Cisco MGX 8220 ASC Shelf Controll er

The Cisco MGX 8220 shelf controller (ASC) is a two-card set consisting of an ASC front card and an ASC-BC b ac k car d . Th e s he lf can contain a single ASC card set or a du al ( redu n da nt ) card s et .

The ASC provides overall control of the shelf through the cell bus. The ASC back card provides console ports for a u ser i nt er face t o co nfi gur e an d manage th e sh el f.

The AS C c a rds are insta l l ed in sl ot 3 and or s l ot 4. An il lu s tr ation of t he ASC c ar d s et is pr ov id e d in Figure 2-11.

Figure 2-1 1 ASC Cards

ACT

STBY

FAIL

LAN

ASC

• • • • •

••••••••

•••••••

ASC

L A N

A U I

•••••••••••••

••••••••••••

•••••••••••••

••••••••••••

M A I N T E N A N C E

C O N T R O L

Front card Back card

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Console Ports

There are th r ee ha rd ware co n s ole p o rt s lo cated on th e ASC back c ar d. The main te na nc e port is an RS - 2 32 p o rt u s ed by a d ir ect conn ect al ph an u mer ic termin al for inp ut ti ng

command-line interface (CLI) commands. Y-cables cannot be used on this port. This port must be used to ma ke i nitial IP a d dr e ss a ss ig nments on the ot her po r ts bef ore t he other po r ts can b e used.

The control port and IEEE 802.3 (Ethernet, LAN AUI) ports are used for inputting commands and file transfers (statistics collection and firmware download). The control port communicates using SLIP and the Ethe rnet port communicates using IP. These ports support TFTP, SNMP, and CLI (through Telnet). The control port can be used with Y-cables for redundancy when a second ASC card set is present.

Ethernet Transceiv er Extenders

Some Eth er ne t t ra nsceivers with i nt egrat ed D B- 1 5 co nn ec to rs cannot be co n ne cte d di re ctl y to th e LAN AUI Ethernet port on the Cisco MGX 8220 ASC back ca rd because of interferenc e with the ASC back card extractor levers. To overcome this problem, two Ethernet transceiver extenders (one each for a primary and secondary ASC card) are prov ided.

If you en counter di fficulty in c onnecting an Ethernet transcei ver, install an ext ender on each ASC card.

1. With the retaining clip on the LAN AUI port in the unlocked (up) position, connect the Ethernet

transceiver extender to the LAN AUI port on the ASC back card as shown in Figure 2-12.

2. Push the p or t re tai ni n g c li p i n to th e locked (d own ) po s i tio n to secure th e con n ect io n .

3. With the retaining c li p o n the tran sceiver extender in th e unlock ed ( up ) po s i tio n , connect th e

Ethernet tr an sceiver to the ex ten d er as sh ow n in Fig u re 2-1 2.

4. Push the ext ender re tai ni n g c li p i n to th e lo cked ( d own) po si tio n to se cu re th e con n ect io n .

Figure 2-12 Ethernet Extender

Note Additional access for shelf managemen t is available throu gh in-band communication over the ATM

trunk.

11764

LAN AUI

connector

ASC back card

Ethernet extender

Transceiver

Retaining clips

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ASC LED In di cators

The ASC LED indi cat o rs ar e l oc ate d o n th e fac ep lat e o f th e front ca rd. Table 2-1 de s crib es the LED indica to rs .

Auto Car d Restore

Auto card restore is a feature that a llows a s ervice m odule card to be removed and be hot plug replaced with another service module card, keeping the same configuration. With this feature, the ASC maintains a copy of th e configurati on f o r eac h a ct ive ser vi ce mod u le.

Broadban d Network Modules

The BNM card set provides the Cisco MGX 8220 trunk interface to a Cisco BPX 8600 series node. There are two major types of BNMs, one supports a T3 or E3 trunk and one supports a 155 Mbps SONET SMF trunk.

Each Cisco MGX 8220 shelf must be equipped with at least one BNM installed in slot 1 or slot 2. A second , redundant BNM ca n also be installed in slot 1 or sl ot 2. The primar y and the redundant BNMs must be of the same type. Each BNM installed consists of a front and back card set.

In addition, the BNM provides

• Extern al al ar m in terface

• Fan monitor interface

• Port for acceptin g a n exte rnal T1 o r E1 cl oc k sou r ce

Table 2-1 ASC LED Indicato rs

Type of LED Color M ea ning of LED

ACT G re en On indi ca tes the car d i s active. STBY Yellow

• Slow blink without a ctive LE D indicates the card is in the boot

state.

• Fast blink with active LED indicates the ASC is downloading to

another card or is being downloaded.

• Steady yellow indicates the card is in standby state. The

firmware is executi ng A D M I N co de .

FAIL Red

• Steady red with active and standby LEDs off indicates the card

is in the reset condition, the card has failed, or the card set is not comple te (no li ne modu le ).

• Stead y re d wi th active LED on i nd i cat es t he car d w as ac tive

prior to failing.

• Steady red with standby LED on indicates the card was in

standby prior to failing.

• Blinking red indicates the card is in the power up state.

LAN Green On indicat es r ecei v e ac ti v it y throu gh t he LAN po rt. A gre en fl ash is

seen for every p ack et re ceived .

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BNM-T3/E3

The broadband network modules-T3E3 (BNM-T3E3) is a two-card set consisting of a BNM-T3 or E3 front card and a T3 E3 -D- B C o r T3E3 - B- B C b ac k car d . Ei th er b ack c ar d can b e u sed w i th ei th er fro n t card except that the BNC clock connector only works for E1 clock sources. The shelf may contain a single BNM card set or a dual (redunda nt) card set. The cards are installed in slot 1 and/or slot 2.

An illustration of the BNM-E3/T3 card set is shown in Figure 2-13.

Figure 2-13 BNM-T3/E3 Cards

ACT

STBY

FAIL

PORT

BNM

ACO

HIST

DC-A

DC-B

MIN

MAJ

ACO

HIST

• • • • •

••••••••

•••••••

T3E3-B

A L A R M

R E L A Y S

E X T

T M G

T3 Front card

ACT

STBY

FAIL

PORT

BNM

ACO

HIST

DC-A

DC-B

MIN

MAJ

ACO

HIST

• • • • •

E3 Front card

Back card B version used for E1 clock timing input

••••••••

•••••••

••••••••

•••••••

T3E3-D

A L A R M

R E L A Y S

E X T

T M G

Back card D version used for T1 and E1 clock timing input

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The majo r fu n ction of th e B N M is t o pr ov id e a T3 or E 3 ATM interface to a BNI or B X M -T3/E3 car d in a Cisco BPX 8600 series node. The BNM also provides the following miscellaneous functions:

• Shelf mastership

Selects w hic h co re c ar d to use as the master an d w h ic h re du n da nt bus to u s e.

• Cell bus mastership

BNM poll s t he ot he r ca rds o n t he b u s a nd g rant s pe rmi ssi on t o t ra nsmit c ell s acro s s th e b us . Po ll in g is performed on a round-robin basis.

• Cloc k sele cti on

BNM manages the clock selection and synchronization for the entire Cisco MGX 8220 shelf. The BNM selects, regulates, and outputs the selected clock for use by each service module in the shelf. The BNM back card contains a T1/E1 port for inputting an external T1/E1 clock source. Two versi ons of the line modu le are av ai lable . Version T3E3 -B has a BNC ex tern al clock con nector used with E1 cl ock ti ming inp ut. Versio n T3E3 -D has a DB-15 e x tern al cloc k conn ecto r use d wi th T1 or E1 clock timing input. The shelf can also obtain clock from the DS3 or E3 trunk itself or use an internal cl oc k s our ce.

• Extern al al ar m in terface

BNM pr ovide s t he act ivation o f fou r al ar m r el ay s , w h ich a re w ired to a DB -15 co nn ec to r on t he back card f acep l ate allowing th e cu s t ome r to w ir e th eir ow n cab le f ro m th e connect or t o a n indicato r pa ne l. The fou r relays are M ajor Alar m A u dibl e, Major A larm Visual, M i no r A larm Audible, and Minor Alarm Visual. The pinouts for this connector are provided in Appendix B, “Speci ficati on s .”

• Miscellaneous monitoring functions

–

Fan performance in the cooling assembly

–

Input vo ltage levels

–

Shelf intake air temperature

–

In-band management

BNM prov ides a s eparate path f or manage ment of the Cisco MGX 8220 u sing an ATM VCC fro m across the ATM network.

ATM Tru nk Interfa ce

The BNM ca rd ac cep ts and tr an smits ATM cells over a T3 or E3 l in e i nt er fa ces a t 4 4 .7 36 M b ps or

34.368 Mbps respectively, using Cisco StrataCom Trunk Interface (STI) protocol asynchronously. Framing o ccur s on the card usi ng C -bit p ar it y. An 8-kHz clock i s e xtra c ted f rom t he rece iv e d si gn al a nd

can be used to synchronize the entire Cisco MGX 8220 system. The physical T3 or E3 A TM interface to the BNM is achieved using the BNM back card. This physical

connection is made with BNC connectors. There are also relays on the back card. These relays provide the continuity or discontinuity between the internal circuitry and the external BNC connectors for the transmi t a nd r ece ive li ne s.

These relay s a re al so use d a s a m ec ha ni cal lo o pback for th e T 3 or E3 b it st re am. The Cisco MGX 8220 shelf implements the ATM STI cell format by using slot/channel numbers in the

VPI/VCI fields in the cell format used between the BNM and the Cisco BPX 8600 series BNI port. The cell format is shown in Figure 2-14 and Figure 2-15. The format on the left is the general STI format, the format on the right is the Cisco MGX 8220 implementation.

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In this format, the virtual circuit is defined by

• Slot specific position of the VPI

• 4-bit slot number positi on of the VPI

• 10-bit lo gi cal ch an n e l nu mb er ( LC N) a ss ig n ed as t he V C I

The CC/FFCI/Supervisory field is used for ForeSight bits and a Supervisory bit.

Figure 2-14 Cisco MGX 8220 ATM Trunk Cell Format

Figure 2-15 CC, FFCI, EFCI, Supv, PTI, and CLP Fields

1000

Slot#

LCN<7:0>

CC/FFCI/Supv

see below

PTI/EFCI/CLP

see below

HEC

Payload

Local VPI

VPI

VCI

HEC

VPI

Payload

LCN<11:8>

VCI

CC/FFCI/Supv

see below

PTI/EFCI/CLP

see below

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FFCI Supv

msb

CLP

PTI

EFCI bit if msb is set

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BNM-T3/E3 LED Indicators

The BNM-T3/E3 LED indicators are described in Table 2-2. All LEDs are located on the faceplate of the front car d .

Push Buttons

The BNM has two push-buttons located on the faceplate of the front card.

• ACO

The ACO button is a momentary switch and is pressed during a major or minor alarm to deactivate the audib l e al ar m r el ays and to t ur n th e ACO L ED o n . A ny new al ar m ca use s th e re lay s t o be reactivated.

• HIST

The HIST button is a momentary switch and is pressed to extinguish the history LED if there is no active alarm at th e time.

Table 2-2 BNM LED Indicators

Type of LED Color Meaning

ACT Green On indi cat es t he car d set is in active m o d e. STBY Yellow On indicates the car d s et i s in standby mo d e. FAIL Red On indic at e s the BN M card se t has failed or the li ne m o dule is

missing.

PORT Gre en Green in di ca tes th e p o rt is active.

Yellow Yellow indicates a remote alarm on the port. Red

• Red in di cat es a lo cal alarm o n the po r t.

• Off indicates the port has not been activated (brought up).

MIN Red On indicates a minor alarm in the node. MAJ Red O n i nd i cat es a major alarm in th e no d e. DC-A Green

• On indi cat es “A” pow e r i s O K .

• Off indicates “A” p ow er module is m iss i ng or p re s en t bu t at

0volts.

DC-B Green

• On indi cat es “B” power i s OK.

• Off indicates “B” power module is missing or present but at

0volts.

ACO Yellow On indicates the ACO (audible cut-off) button has been pressed

during a major or minor alarm. This LED is extinguished when that alarm is cleared.

HIST Green ON indicates a major or minor alarm has occurred since the last time

the HIST button was pressed.

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BNM-155

The broadband network module (BNM-155) is a two-card set consisting of a BNM-155 front card and a SMF-155 ba ck card. The shelf can conta in a single BNM-1 55 card set or a dual (redundant) card set. The cards are installed in slot 1 and/or slot 2.

An illustration of the BNM-155 card set is shown in Figure 2-16.

Figure 2-16 BNM-155 Cards

••••••••

•••••••

••••••••

•••••••

SMF-155

Back card

ACT

STBY

FAIL

PORT

MIN

MAJ

DC-A

DC-B

ACO

HIST

ACO

HIST

BNM

155

Front card

CLEI Code Label

S6179

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The major functi on of the BNM-155 is t o provide a 155 Mbps SONET ATM interface to a B XM-8-155 port o r a BXM-4-155 port in a Cis co BPX 8600 series node. The BNM-155 also provides the followi ng miscellaneous functions:

• Shelf mastership

This function selects which core card to use as the master and which redundant bus to use.

• Cell bus mastership

BNM-155 polls the other cards on the bus and grants permission to transmit cells across the bus. Polling is performed on a round-robin basis.

• Cloc k sele cti on

BNM-155 manages the clock selection and synchronization for the entire Cisco MGX 8220 she lf. The BNM- 155 se lec ts , re gulates, and ou tp u ts th e s ele cted clock for u se by eac h ser v ice module i n the shelf. The BNM-155 back card contains a T1/E1 port for inputting an external T1/E1 clock source (b o th D - 15 a nd B N C a re availa bl e) . Th e shelf can also o b tai n its clo ck so u rc e f r om th e SONET trunk itself or use an internal clock source.

• Extern al A larm Interface

BNM-155 provides the activatio n of f o ur alarm rel a y s th at ar e w i re d to a D B -1 5 co n ne c to r on t he back card f acep l ate , al low in g th e c ustomer to w i re th ei r own cable from the con n ect or t o an indicato r pa ne l. The fou r relays are M ajor Alar m A u dibl e, Major A larm Visual, M i no r A larm Audible, and Minor Alarm Visual. The pinouts for this connector are provided in Appendix B, “Speci ficati on s .”

• Miscellaneous monitoring functions

–

Fan performance in the cooling assembly

–

Input vo ltage levels

–

Shelf intake air temperature

–

In-band management

The BNM-155 provides a separate path for management of the Cisco MGX 8220 shelf using an ATM VCC from acr o ss th e ATM network.

ATM Trunk Int erfa ce Bac k Card

The BNM -15 5 car d acc ep ts a nd t ra nsm its ATM 53-byt e ce ll s over a S O NET line inter fac e a t

155.52 Mbps using ATM UNI or ATM B-ICI protocols. In UNI mode, 20 virtual circuit connections per slot are supported. In NNI mode, 340 virtual circuit connections per slot are supported.

SMF-155 Back Card

The SMF- 155 b ack card prov id es a ph y sical single -m od e fibe r op ti c S ON ET OC-3 interface conforming to ANSI T1.105 and GR-253-CORE standards. This interface uses SC connectors. When used in a redun da nt co nfigu rat io n, redu n dant cabl ing is provi de d thro ugh Y-cables.

The ba ck car d a ls o p r ovides

• One-DB-15 female connector for T1/E1 clock input

• One-B N C co nn ec to r for E1 cl o ck in pu t

• One-DB - 15 f emale conn ec to r for al ar m interface

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BNM-155 LED Indicators

The BNM- 155 LED indicators are described in Table 2-3. All LEDs ar e located on the facepl ate of the front card.

Push Buttons

The BNM-155 has two push-buttons located on the faceplate of the front card.

• ACO

• HIST

The HIST button is a momentary switch and is pressed to extinguish the history LED if there is no active alarm at th e time.

Table 2-3 BNM-155 LED Indicators

Type of LED Color Meaning

ACT Gree n On ind ic ates the car d set is in act ive mo de. STBY Yellow On ind icates th e car d s et is in s ta nd by m o de. FAIL Red On indicates the BNM-155 card set has failed or the line module is

missing.

PORT Gr ee n Gree n in di cat es t he port is a ctive.

Yellow Yellow ind ica tes a rem ot e a lar m o n th e po r t. Red

• Red i nd ic a te s a local al ar m o n th e p o rt.

• Off indicates the port has not been activa ted (brought up).

MIN R ed On i nd ic ates a min or a lar m in the no d e. MAJ Red On indic ates a majo r al ar m in the n o de . DC-A Green

• On indicates “A” power is OK.

• Off indicates “A” power module is missing or present but at

0volts.

DC-B Green

• On indicates “B” power is OK.

• Off indicates “B” power module is missing or present but at

0volts.

ACO Y ell ow On in dica tes the A CO (a udible cut -of f) but ton has been press ed durin g

a majo r or m i nor al ar m . T hi s LE D is ex tinguish ed wh en th e alarm is cleared.

HIST Gree n ON indicates a majo r o r m inor a lar m h a s oc cu rr ed si nc e th e last ti me

the HIST button was pre ssed.

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IMATM

The inverse multiplexing for AT M trunk module (IMATM) is housed in the Cisco MGX 8220 shelf in a service module slot. IMATM is an extension to the Cisco BPX 8600 series BNI card that supports Cisco BPX 8600 series ATM trunks over multiple (up to 8) T1 and E1 lines instead of single T3 or E3 line. The IMATM does not use the Cisco MGX 8220 cell b us as other service modules do, but provides its own trunk to the Cisco BPX 8600 series.

Service Res ource Modules

A service redundancy module (AX-SRM-T1/E1) provides three major functions for service modules: bit error rate testing (BERT) of T1 and E1 lines and ports, loop back of individual nx64 channels toward the CP E, and 1:N redunda ncy. Th e AX-S RM - 3T3 als o provides bulk distr ibu tion o f T1 line s . This section de scribed the following:

• AX-SRM-T1/E1 Features, page 2-22

• Rules for Installation of SRMs, page 2-23

• AX-SRM-3T3, page 2-24

Figure 2-17 show s an ill us t ration o f th e A X - S RM-T1 /E1 car d .

AX-SRM-T1/E1 Features

The SRM ca rds pr ovi de the following function s :

• Bit e rror rate testing ( BERT)

When a service module line or port has bee n put into loopback mode, the SRM can generate a test pattern over the looped line or port, read the received looped data, and report on the error rate. This operation can be performed on a complete T1 or E1 line, on a fractional T1 or E1 line, on a DS0 bundl e (NxD S0), or on a s in gle DS0 ch anne l. T he S RM ca n sup por t B ER T on ly o ne li ne or ch anne l at a time.

BERT is capable of generating a variety of test patterns including all ones, all zeros, alternate one zero, double alternate one zero, 2

-1, 220-1, 215-1, 211-1, 29-1, 1 in 8, 1 in 24, DDS1, DDS2, DDS3,

DDS4, and DD S5 .

• Extended loopback code-generation capabilities for individual DS-1 or subra te streams

• 1:N service module redundancy

Service module redunda ncy pro vid es 1:N redunda ncy for multip le g roups of servic e modu les whe re a group can consi s t of N active and one st andby service mod ules. The redundant s ervice m odule in a group must be a superset (with respect to functionality) of the cards. For example, one group could co nt ain a ll th e F R SMs and an o th er al l t he AUSMs.

1:N re d un dancy must be con fig ur ed by the us e r. When the f ailure of an a ctive card in a gr o up is detected by the ASC, the SRM is ordered to invoke 1:N redundancy for that group. The back card of the failed s er vice m o du le now di r ects data to a n d fr om the standby ser vice m o du le. With t he SRM-T1/E1 , when 1:N r edundancy is invoked for a gr oup, it is not available to the other gro ups or to other service modules in the group using 1:N redundancy. Another fa ilure in any group results in a shelf alarm. This restriction does not apply to the SRM-3T3, for example, the SRM-3T3 can support multiple group failures.

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Rules for Installation of SRMs

The installation of an SRM is optional. If SRMs are installed in a shelf with redundant ASCs and BNMs, the shelf must also have redundant SRMs. If a shelf has a single ASC and BNM pair (no redundancy), the SRM m u st be ins ta lled in t he appropriate slo t.

• The SRM is in stalled i n slot 15 when the non-re dundant ASC/BNM is ins talled in slot 1 and sl ot 3.

• The SRM is installed in slot 16 when the non-redun dant ASC/BNM is installed in slot 2 and slot 4.

• When a f ail ed ca rd i s r ep lac ed , y ou must switch back t o n o rm al op er at io n; i t i s n ot au to m at ic .

• SRM s are hot- plug ga ble .

Figure 2-17 SRM-T1/E1 Card

SRM

T1E1

1:N RED

BERT

• • • • •

ACT

STBY

FAIL

Front card

S6180

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SRM-T1/E1 LED Indicators

All LEDs are lo cat ed on the fac ep late of the front car d . The SRM - T1 /E 1 LED in dicat or s ar e desc ri be d in Table 2-4.

AX-SRM-3T3

The SRM-3T3 service redundancy module provides bulk distribution of T1 circuits to the 4-port or 8-port T 1 serv ice modu le s. Rathe r than in dividually cable each of th e 40 or 80 inco min g T1/E 1 line s to an MGX 8220 edge concentrator, the MGX 8220 backplane is designed with a distribution bus that allows an A X-S R M - 3T 3 t o dis tribu te T1 s r eceived “in bulk” to T1-based service mo d ul es . Th is eliminates the need for T1 back cards for each service module and the associated cabling and potential overload i n g of th e di gital cro s s-conn ect syst em po r t. The AX- SRM-3 T3 provides a met h od to bring i n from on e to three T 3 in te rf ace s th at can b e d em u l tip lexed t o t heir con stituent T1 s , pr ov id ing up to 2 8, 56, or 80 T1s to be distributed to T1 service modules over the distribution bus. Both 4-port and 8-port servic e modules are supported in any combination. The AX- S RM-3T3 supports the following features:

• 1:1 redundancy of the SRM with Y-cabling.

• The same fea tures as the AX-SRM-T1E1, including bit rate error test (BERT) and 1:N redundancy

of T1/ E 1 s er v ic e m o dules.

• Spare service module that can be used to provide redundancy for both bulk-distributed and

line-module-based service modules concurrently (a redundancy back card will be required for a spare se r v ice mo d ul e p r oviding redu nd ancy fo r li ne module- ba s ed service m o du les).

• No back card required for T1 service modules that use bulk distribution.

• Mix of service modules using bulk distribution with service modules using line modules in the

same shelf.

• Mix of 4-port and 8-port cards, with all 10 slots always available to se rvice modules via either li ne

modules or bulk .

Out of the maximum possible 84 T1 chan nels (3 t im es 28), up to 80 channels can be active at any time. Any T1 channel in a T3 line can be distributed to any four/eight port on a service module in any slots 5 to 14 without restriction.

The AX-SRM-3T3 can also be operated in “nonbulk mode” on a port-by-port basis. For a port configured in nonbulk mode, bulk distribution is disabled and the SRM acts as a AX-SRM-T1/E1 providing BERT and 1:N redundancy functions only.

Figure 2-18 shows an illustration of the AX-SRM-3T3 cards.

Table 2-4 SRM-T1/E1 LED Indicat ors

Type of LED Color Meaning

ACT Green On indicates t he ca rd se t is in a ctive m od e. STBY Yellow O n in di cat es the card set is in s t an dby m o d e. F AIL Red On indicates the B NM-15 5 ca rd set ha s f a ile d o r t he li ne m od ule

is missing.

1:N RED G reen

• On in di cat es 1 :N re dun da ncy ha s b een i nvoked.

• Off indicates 1:N redundancy is not active.

BERT Green On indicates t he B ERT fun cti on i s active.

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Figure 2-18 AX-SRM-3T3 Cards

BNM 3T3 M

S6181

ACT

STBY

FAIL

1:N RED

BERT

PORT1

PORT2

PORT3

SRM

3T3

Front card Back card

CLEI Code Label

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Managing the Cisco MGX 8220 Shelf

This cha pter d escribe s the connec tion meth ods us ed to co nfi gure and cont rol the C isco MG X 8220 . This chapter contains the following sections:

• Summary of User Interface Connections, page 3-1

• User I nter fac e A cc ess Po r ts, page 3 -3

• User Accounts and Privilege Levels, page 3-7

• Setting-Up Management Connectivity to the Cisco MGX 8220 Shelf, page 3-8

• Command-Line Interface, page 3-11

• Establishing the Cisco MGX 8220 to Cisco BPX Connection, page 3-12

• Cisco MGX 8220 Management Through SNMP, page 3-12

• Structure of the MIBs, page 3-13

• TFTP User Interface, page 3-15

Summary of User Interface Connections

This section summarizes the user interface connections used to set up and manage the Cisco MGX 8220 shelf.

• Functions of the User Interface, page 3-1

• Physical Connections, page 3-2

• Protocols, page 3-2

• Matrix o f U s er I n ter fa ce C o m b in ati on s, page 3 -3

For more d e ta iled info r m at io n, see th e individu al sectio n s later in th is ch apter.

Functions of the User Interface

Release 5 .0 o f th e C is c o M GX 8220 in terfa ce s h el f al lows th e u s er to perfo rm the fo ll owing management functions:

• Issue commands

A termina l or work stat ions use d to conf igu re, mon itor , an d manage the Cis co MGX 8220 resources. Cisco Systems recommends the use of Cisco WAN Manager Release 9.2 connected through an in-band link fr o m th e Cisco B PX network fo r th i s pu r po s e .

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• Config ure and col lect stat ist ical info rm ation

A workst ation is u s ed t o c on fig u re s ta ti s tic types a nd co llect the statistics fil es.

• Download firmware

A workstation is used to download firmware files onto the Cisco MGX 8220 shelf.

• Back u p o r r est or e shelf confi gur at io n fi les

A workstat io n is u sed t o b ack up or r es tor e s h el f co nfigu rati on fil es bet w een t he wo r ks tat io n an d the Cisco MGX 8220 shelf.

Physical Co nnections

The Cisco MGX 8220 shelf offers four physical access methods to perform these user interface functions. The physical connection depends on the type of function to be performed.

• Serial line access through the RS-232 maintenance port of the ASC

• Serial line access through the RS-232 control port on the ASC using Serial Line IP SLIP

• Ethern et acc es s t hro ug h th e AUI LAN p o rt

• In-band access through eight dedicated virtual connections over the Cisco BPX network to the

BNM

The functions o f th ese ports are des cr ib ed l ater in th is ch ap ter.

Protocols

The pr otocol s th a t can be e mploye d a r e

• CLI (maintenance port, control port, LAN port, and in-band)

Telnet is u s ed t o a cce s s th e comman d -lin e i n ter fa ce ( C LI ) th rou gh t he co n tr ol , L AN , an d in -ban d ports. Th e maintena nce port is u sed t o co nn ec t a dumb t er m in al f or d ir ec t entry of co mm a nd s.

• TCP /IP TFTP (c on trol po r t, LAN port, and in -b and)

TFTP is used to transfer files between a workstation and the Cisco MGX 8220 shelf. This protocol is used t o co nfi gu r e a nd co llect st ati s ti cs and con fig ur at io n file s . I t is also u sed to d own lo ad firmware to the Cisco MGX 8220 shelf.

• UDP/IP SNMP (control port, LAN port, and in-band)

SNMP is used to configure, monit or, and manage the Cisco MGX 8220 re s o urces using SNMP get and set commands. Cisco WAN Manager (CWM) or other registered SNMP Managers can be used for SNMP functions.

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User Interface Access Ports

Matrix of User Interface Combinations

A matr ix o f p er m i ss ib le user interface co m b in at io ns is p r ovi ded in Table 3-1.

User Interface Access Por ts

This secti o n d escribes t he po r ts t h at can b e u sed t o di re ctl y or r emotely connect a t er min al o r workstation.

• Main tena nc e Por t, pa ge 3-3

• Control and LAN Ports, page 3-4

• In- Band Access , page 3-6

Maintenance Port

The maintenance port is the upper RS-232 connector on the ASC back card. The connector is DB-25 (female). The user interface prompt appears when a dumb terminal is connected to the maintenance port and the system is powered up. No special software is required and the connection is made through a standard (not null modem) cable. This arrangement is shown in Figure 3-1. Entering commands using a dumb (o r emulated) t er min al is th e o n ly u se f o r th e maintenance port.

The maintenance port configuration includes 8 data bits, no parity, one stop bit, and 9600 bps.

Table 3-1 UI Function/Access Path/Protocol Combinations

UI Function Physical Acces s Path TC P /IP Protoco ls Used

Enter co m ma n d s using CLI ASC ma in te nance p o rt

ASC control port In-band BNM T3 port LAN port

None SLIP, TCP, Telnet IP, TC P, Telnet IP, TC P, Telnet

Configu re /co ll ec t s t ati s ti cs and configur atio n files

ASC control port In-band BNM T3 port LAN port

SLIP, TC P, TFTP IP, TC P, TFTP IP, TC P, TFTP

Enter commands using SNMP ASC control port

In-band BNM T3 port LAN port

SLIP, UDP, SNMP IP, U DP, S NM P IP, U DP, S NM P

Download firmware ASC control port

In-band BNM T3 port LAN port

SLIP, TC P, TFTP IP, TC P, TFTP IP, TC P, TFTP

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Figure 3-1 Maintenance Por t Access

Control and LAN Ports

The cont rol port is the m iddle RS-232 connector on the ASC line module. The connector is an RS-232 DB-25 (f emale). For th is t y pe of con n ectivity, the cont ro l ter minal (P C o r wo rk s ta ti on ) m u st s u p po r t TCP/IP using a SLIP serial connection. The cont rol port must have been previously conf igured wi th an IP address . Th e c on tr o l t er mi nal can be co n ne cted eithe r lo cal ly o r re mo tely using mo d em s. When enterin g co mma nd li ne com ma nds throu gh th e co nt rol p ort , the use r in terf a ce p rompt app e ars when you perfo rm a

Telnet login to the ports IP address.

• The LAN port on the ASC is an Ethernet AUI port, and supports the same Telnet connections and

user inte rface prom pt as the Co ntrol port.

• The control and LAN ports support Telnet (for CLI), TFTP, and SNMP sessions as indicated in

Table 3-1. Use of the control port is shown in Figure 3-2.

• If there are multiple devices to be configured, a terminal server that can dial out to multiple devices

can be used. Figur e 3- 3 il lu str at es a p oss i bl e scenario for t er minal server c on tro l port ac cess .

• Figure 3-4 shows how the LAN port is connected.

ASCFRSMBNM

Control

terminal

Maintenance port

RS-232

MGX 8220

H8257

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Figure 3-2 Control Port Access

Figure 3-3 Control Port Access using a Terminal Server

Service

modules

BNM

Control

terminal

address

Control Port

Modems

(optional)

RS-232

MGX 8220

H8258

ASCBNM

address

Control port

RS-232

Terminal

server

Control

terminal

Control

terminal

Sun workstation

MGX 8220

Ethernet

Service

modules

Modems

optional

H8259

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Figure 3-4 LAN Port Access to the Cisco MGX 8220 Shelf

In-Band Access

In-band access uses a portion of the bandwidth of the Cisco MGX 8220 shelf to the Cisco BPX T3 connection by r e se r v in g a nu m be r of ATM virtu al c o nn e c tions f o r netwo r k m a n ageme nt f un c t ions.

• The control terminal (PC or workstation) is connected through the Cisco BPX network and must

support TCP/IP.

• The in-band port on the BNM must have been previously configured with an IP address.

• When usi n g t h e in - b and p o rt to e nt er C L I co m mands, th e u s er in terface pro mp t appear s af te r yo u

perform a Telnet login to the ports IP address.

Figure 3-5 In-band Access Example

ASCBNM

address

LAN port

MGX 8220

Service

modules

Workstations

Ethernet

H8260

Control

terminal

Control

terminal

Control

terminal

BPX 8620 network

Router

ATM in-band

connection

MGX 8220

BPX 8620

Ethernet

ASCBNM

address

FRSM

H8261

BPX 8620

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User Accounts an d Privilege Levels

User Accounts and Privilege Levels

The Cisc o MGX 8220 includes b uilt -i n se curi ty feat ures to pre v e nt una ut hori zed u s e of t he s yst em. T he security fe atu r es r eq u ire t ha t e ach u ser o n th e sy s te m h ave a valid account ( spe cifi ed by a u s erI D ), passwo r d, and pr ivil e ge le vel.

The combination of account, password, and privilege level determines which commands the user can enter.

The accou nt ( use rID ) an d privilege level ar e assigned us i ng the adduser com man d. Th ere is a default password which is used the first time a user logs in. When logged in, the user can change the password to a pe rso n a l pa s s wor d w ith the cn f pw d configure password command.

This section describes the following topics:

• Accounts, page 3-7

• Privilege Levels, page 3-7

• Pass word s, pa ge 3-7

Accounts

Each user is assigned an account (userID), which is specified as a parameter in the adduser command. The userI D co ns ists of u p to 1 2-al p han u m eric charac ter s i nc lu d in g l et ter s, nu mb er s , a hy p he n, an d an undersco re. U s e rID s are case sen sitive.

When a u ser a ttempts t o lo g in , t he system pr o mp ts f o r a val id u s er ID. The Cisco MGX 8220 she lf perm its one s upervi sor acc ount and 63 user a ccount s. The Ci sco MGX 8220

shelf ships with a preconfigured superuser account.

Privilege Levels

Each account is assigned a privilege level when the account i s established with the adduser command. Only an est ab lis h ed u ser can ente r th e a dduser command to open a new account. The account you create can only have a p rivilege level at the sa me or lower l evel th an y o ur own pr ivil ege level.

All commands have an assigned privilege level. A command can only be enter by a user whose privilege level is equal to or above the privilege level of the command. There is one superuser privilege level and six user levels designated 1 to 6 (with 1 being the highest).

Passwords

A defaul t p ass w ord is use d the first time use rs log in . Wh en u s er s ar e lo gg ed o n , th ey can change t h e password entering the cnfpwd command.

The passwor d mu s t co nsi st o f 6 to 1 5 ch ar act er s. O n ly l etters, nu mb er s, a hyphen, an under s co re, and spaces are allowed. The password is case sen sitive. For security, the password is not displayed as it is entered.

When a user attempts to log in, the system prompts for a valid password after the userID prompt has been ente re d. Th e u ser m ust respond w it h t h e ac co un t’s vali d passwo r d.

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Setting-Up Management Connectivi ty t o the Cisco MGX 8220 Shelf

Setting -Up Management Conn ectivit y to the Cisco MGX 8220 Shelf

This section describes how to set u p the various user interface access p aths.

• Setting-Up IP Addresses for Control Port, LAN Port, or In-Band Access, page 3-8

• Login Procedure, page 3-9

• Connecting Using the Maintenance Port, page 3-9

• Connecting Using the Control Port, page 3-10

• Connecting using an In-Band Connecti on, page 3-11

• Connecting using the LAN Port, page 3-11

Initiating com mands t o th e shelf involves pr ov iding th e correct u s er passwor d .

Setting-Up IP Addresses for Control Port, LAN Port, or In-Band Access

Before yo u can acc ess Cisc o MGX 822 0 using the con trol por t, LAN po rt, o r in-ban d virt ual con nection, you must configure IP addresses for each of these destinations on the ASC card. To configure IP addresses, proceed as follows:

1. Establish a CLI connection to the shelf (either over the maintenance port or a port that has

previously been configure d with an IP address).

2. At the login: prompt, enter your userID.

3. At the password: prompt, enter your password.

4. At the card number: prompt, enter the slot number (3 or 4) of the ASC card. For example,

card number:3

The following prompt appears:

nodeName.shelf#.slot#.cardType.cardStatus>

5. At this pro mp t, en ter th e c nfifip com man d to co nfigu re th e con tro l po r t, LAN po rt or in-b an d por t

IP address. The cnfifip co m mand is en te re d in the fo ll owi ng f o rm at:

cnfifip -ip ip address -if interface type -msk subnet mask address -bc <broadcast address>

ip address specifies an IP address for the destination port in dotted decimal format

interfa ce type

• 28 for the control port

• 37 for the in-band port

• 26 for the LAN port

subnet mask addre ss s p ec ifie s th e m as k ad d re s s in h e xa decimal fo r mat

broadcast address specifies the broadcast address in hexadecimal format

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Setting-Up Management Connectivity to the Cisco MGX 8220 Shelf

For the control port and Ethernet port, the Cisco MGX 8220 shelf is now configured for you to access the unit usi n g t h e sp eci fied p o rt . See “Connecting Using the Control Port” section and “Conn e cting using the LAN Port” section for details. For in-band access, you need a connection across the network. See “Connecting using a n In-Band Connection” section on page 3-11 for details.

When no u s er is logged into th e system the pr omp t is

To login, users must respond to the

the following prompt:

password:

Users must respond with the appropri ate password. Press Enter. The first time new users log on, the system re qu ires a p as sw ord to b e en tered. Us er s ca n ch an ge th e p as sw or d at any ti m e. W h en a c or r ect passwo r d has been entere d, the fo llowing p r om p t appe a r s:

card number:

Enter the slot number of the card to receive the commands. Press Enter. The normal command prompt appears an d co m mands fo r th e sp ecified car d/ slo t can be e nt er ed .

To issue commands to another module, enter the cc (chang e card) comm a n d.

cc slotnumber

Press Enter.

Note The slot number should be from 3 to 14. ASC cards reside in slots 3 and 4. Servic e modules reside

in slots 5 to 14. Slot 15 and slot 16 contain SRM cards and cannot be accessed directly; slot 1 and slot 2 contain BNM cards and also cannot be accessed directly. Commands for the BNM and SRM cards are address ed to the ASC.

Connecting Using the Maintenance Port

1. After setting up and powering up the Cisco MGX 8220 shelf (see Chapter 5, “Servi ce

Configuration”), a CL I

2. Log in as describ ed in t he “Login Procedure”section.

Upon successful login, the standard CLI prompt showing the node name assigned to the shelf, the shelf number, logged in slot number, logged in card type, and status is displayed.

(nodeName.shelf#.slot#.cardType.cardStatus>),

For example,

myshelf.1.6.FRSM.a > (FRSM in slot 6 with active status)

3. At the nodeName.shelf#.slot#.cardType.cardStatus> prompt, CLI commands can be entered.

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Connecti ng Using the Cont rol Port

There are two methods of connecting to the control port.

• Connecting a PC using the COM Port, page 3-10

• Connecting a Terminal Server, page 3-10

Connec t ing a PC us i ng the COM Port

You can u s e a P C to ac ces s th e s h el f usi n g Telnet, SN M P, or TFTP by com pl eti ng t he f ol lowin g step s:

1. Set up the control port on the Cisco MGX 8220 shelf entering the cnfifip command and interface

type o f 28 as de sc r ib e d i n the “Setting-Up IP Addresses for Control Port, LAN Port, or In-Band Access” section on page 3-8.

2. Make sure th e P C h as T CP / IP insta lle d an d i s co n figur ed f o r SL IP co m mu n ication.

3. Configure the PC COM Port to match the control port (data rate, parity, and so on).

4. Using the control port IP address, ping Cisco MGX 8220 to check connectivity.

5. Start the Telnet a pp li cat io n fo r en te ri ng C LI comman ds, th e S N M P manager ap p lication for

managing Cisco MGX 8220 through SNMP commands, o r start the T F TP application to configure or collec t statistics .

Connecting a Terminal Server

If the works ta ti on use d f o r e nt erin g c ommands is to be co nn ec ted over a termin al server, compl ete th e following steps:

1. Set up the control port on Cisco MGX 8220 e ntering t he cnfifipcommand with an interface type of

28. Refer t o the “Setting-Up IP Addresses for Control Port, LAN Port, or In-Band Access” section on page 3-8.

2. Make sure the terminal server has TCP/IP installed and is configure d for SLIP communication.

3. Configure the terminal server RS-232 port to match that of control port (data rate, parity, and so

on).

4. Set up t he IP ad dres s of th e co ntrol po rt of the t ermina l ser ver (RS -232 ) t o tha t of C isc o MGX 8220

control port ID address.

5. Using the control port IP address, ping from the X-Term workstati on to Cisco MGX 8220 to chec k

connectivi ty.

6. Using the control port IP a ddress of the Cisco MGX 8220 shelf as the desti nation address, st art the

T e lnet a ppli cat io n f or ent ering C LI c omm ands , t he S N MP ma nage r app li cat i on for m ana ging Ci sco MGX 8220 th ro u gh S N M P co m mands, or st ar t t h e TF TP application t o co nfigu r e o r co llect statist ics.

If the communication link hangs while in Telnet, enter the ^[ two-key seq ue nce.

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Command-Line Interface

Connecti ng usi ng an In-Band Connection

Before you can access Cisco MGX 8220 using the in-band method, you must set up or add a connection across th e ne tw or k . To configure a conne ction to Ci sco MGX 822 0 that w ill t er m in at e o n th e in-band port of the ASC card, proceed as follows:

1. Confi gu re th e C isco MGX 8 220 in -band IP addre ss e nte ring th e cnfifip command with an interface

type 37. See “Setting-Up IP Addresses for Control Port, LAN Port, or In-Band Access” section on page 3-8.

2. Management connection end points are already configured on the Cisco MGX 8220 shelf. The

reserved end points for management purposes are VPI = 3 and VCI = 8 to 15.

3. Add a co nn ec tion fr om th e BNI co nn ected to th e m a nagemen t terminal (dir ect ly o r in d ir ect ly ) to

the BNI in the Cisco BPX connected to the Cisco MGX 8220 shelf, using a destination address of VPI = 3, and VCI = 8 to 15.

4. Using th e i n- b an d IP ad dr ess of t he Ci sc o M G X 8 220 s he lf as th e destination ad dres s, start th e

application f o r enter ing CL I c o m mands, t he SNM P m anager appli cation f or m a naging C i sco MGX 8220 th ro u gh S N M P co m mands, or st ar t t h e TF TP application t o co nfigu r e o r co llect statist ics.

Connecting using the LAN Port

The LAN port allows the shelf to be connected to an Ethernet network using an appropriate transceiver. Thus a wor k stat io n co nn ec ted to th e E th er ne t n et wo rk can comm u n ic ate di r ect ly w it h th e C is c o MGX 8220. The port should be given an IP addre ss to allow TCP/IP protocols to be used.

1. Set up the LAN on Cisco MGX 8220 using cnfifip with an interface type of 26 as described

“Setting-Up IP Addresses for Control Port, LAN Port, or In-Band Access” section on page 3-8.

2. Make sure the Ethernet workstation has TCP/IP installed and is configured for TCP/IP

communication.

3. Start the Telnet a pp li cat io n fo r en te ri ng C LI comman ds, th e S N M P manager ap p lication for

managing Cisco MGX 8220 through SNMP commands, or st art the TFTP application to configure or collect statistics.

Command-Line Interface

The comm an d- li n e i nt erfac e ( CL I) u ses a simp le alp h an umeric term in al an d employs th e c on ce pt o f a system prompt to which the user types in commands.

The CLI also employs the concept of a user being logged into a particular module (slot) in the Cisco MGX 8220 shelf, and all commands entered are assumed to apply to that module (slot). In this way the CLI can be used for managing both the core cards and the service modules.

For security, logging in involves entering a correct preassigned password, which allows the user access only to comman d s o f a s p ec ifie d privilege level or below.

For in for mat io n on p er for ming som e o f t he m ana gement f unc tion s us i ng t he CWM co nne cti on manag e r and eq uipment manager, ref er to th e C isc o WAN Mana ger Op erat ion s Gui de.

One comm a nd t ha t must be en te re d usi ng t he CLI is th e C on figu re I nt er fac e IP ad d re ss ( cnfifip). Because a control s t ati on , in clu d in g CW M , uses an IP a dd r ess t o co mm u ni cat e w i th th e s he lf , t he various ports on the shelf must first be assigned IP addresses using the cn fi fi p command.

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Establish i ng the Cisco MGX 8220 to Ci sco BPX Connection

Each CLI com man d and its synta x and pr ivilege level is provide d in the Cisco MGX 8220 Command Reference.

Establishing the Cisco MGX 8220 to Cisco BPX Connection

This p roce dur e mus t be pe rf ormed o n t he C isc o BPX at both ends of the connec tion (“A” and “B”). This connection is established only once per shelf.

On the Cisco BPX

1. Enter the uptrk comm an d to en able the T3 line th at connec ts t o yo u r Ci sco MGX 822 0 s he lf .

For trunk number, specify the BNI trunk number used for the Cisco MGX 8220 T3 line.

2. Enter the cnftrk command.

This command configures the physical line parameters of the T3 line connecting the BNI in the Cisco B P X sw it ch an d BN M in the C isco MGX 8 2 20 sh el f. Refer to th e Cisco WAN Switching Command Reference for de ta il s .

3. Enter the addshelf com man d to en ab le the po r t t o th e C isco MGX 82 20 shelf.

For trunk number, specify the BNI trunk number used for the Cisco MGX 8220 T3 line. For shelf-type, specify “A” for Cisco MGX 8220, specify the VPI (between 5 and 14) and VCI (between 6 and 271) in the VPI and VCI fields.

Note The tot al nu mb er o f cel ls for al l q u eu es sh ou l d n o t exceed 10,0 00.

Cisco MGX 8220 Management Through SNMP

The Cisco MGX 8 220 shelf prov id es t he ab ility to manag e the sh el f th ro u gh S i m p le Network Manageme nt Prot ocol (S NMP) com mands. These c ommands a re issu ed fr om an SNMP Ma nager , which accesses th e C isco MGX 82 2 0 sh el f ei th er th r ou g h th e Et hernet por t , th e co nt rol port, or i n- b an d connecti on .

Each ASC a nd se rv ic e m o d ul e i n th e sh elf contai ns a n S NMP ag en t and a M an ag eme n t Inf orm a tio n Base (MIB) for that module. The SNMP agent responds to GET, GET NEXT, and SET commands from the SNMP Man ag er, thereby pro vi di ng t he user with the ab ilit y to int e rro ga te an d upd at e the MI B.

All messages fro m t h e S N M P ma na ger are checked for th e co r r ect co mm u n ity string as f ollow s:

• Messag es to the act ive ASC must have a communit y s tr ing of A X IS _ ASC _ ACTI VE

• Messages to the standby ASC must have a community string of AXIS_ASC_STANDBY

• Messages to s ervic e module mu st hav e a commun ity st ring of AXI S_SM-xx (where xx is the se rvic e

module slot number 5 to 14)

• Messag es to the act ive BNM must have a communit y string of AX IS_B NM _ACTIVE

• Messages to the standby ASC must have a community string of AXIS_BNM_STANDBY

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Structure of the MIBs

The MIB resides with an object ID of axis under the strataCom bran ch of t he SN M P tr ee str u ct ur e (1.3.6.1.4.1.351.110) as show n in F igu re 3 -6 . T he MIB c on sists of five maj or sections.

• axisSy s te m

• cardG ener ic

• cardSpe cifi c

• axisLin es

• axisServices

Figure 3-6 MIB Tree Structure

axisSystem

The axisS yst em section co nsi sts o f th ree subsec ti on s.

1. The axisS he lf co n tai ns information ab out the shel f as a w ho l e su ch as no d en ame, time, da te , an d

so forth.

2. The axisA sm co n tai n s th e sh el f al ar m ta bl e. Th is t ab le co nt ain s t he th r esh ol d , s everity, and s tat us

of alarm s in the she lf .

3. The axisRedundancy group contains information about the redundant configurations within the

shelf.

cardGeneric

The cardG en eric section co n tai ns o b jec ts th at ar e co mmo n to a ll card types . T hi s se ct io n co n tai n s five subsections.

1. The cardInformation contains card type, card slot, serial number, hardware and firmware revision

number, and so forth.

enterprises

strataCom (351)

axis (110)

axisSystem

cardGeneric

axisLinescardSpecific axisServices

123

H8262

1. cardInfo

2. cardInterface

3. cardSelftest

4. cntrlMsgCnt

5. sarchanCnt

1. axisShelf

2. axisAsm

3. axisRedundancy

1. bnmClkCfg

2. bnmAddTrans

3. bnmATMcnt

4. Signalling

6. smfeatures

7. rateControl

1. serialInterface

2. ethernetInterface

3. dsx1

4. dsx3

1. FrameRelay

2. atm ports channels

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Stru cture of t h e MIBs

2. The cardIn ter fa ce co nt ain s a list of p hy sica l i n ter fa ces and serv ic e t yp es available o n a ca rd .

3. The cardSe lf tes t co n tai n s a s e lf - test en ab le/disa bl e o bj ec t, t he in t er val b et we en s el f-t es ts, and th e

results of the last self-test.

4. The controlMsgCounter contains the current values of the control SAR counters (control frames

transmi tte d an d r eceived, con trol cells dis ca rd ed , a nd s o f o rth) .

5. The sarCh an ne lC oun ter c on ta in s th e current values of th e c ha nn el SA R co un te rs. These co u nter s

are for ATM cells and are maintain ed o n a p e r V C b as is.

cardSpecific

The cardS p ec ific s ec tio n co n tai ns ob je cts th at ar e s p ec ific to a partic ul ar ty p e o f car d . This sec tio n contains s even s u bs ectio ns .

1. The bnmClockConfig contains the primary and secondary clock sources, the status and impedance

of the externa l T1/E1 c l ock input.

2. The bnmAddressTranslation contains shelf, slot, and channel mapping data.

3. The bnmATMCounters co nt ain t he ATM counters on th e BNM c ar d. Th ese counte rs co nt ain t he

current valu es o f ATM cells tr ans m it ted , ATM cells r ece ived, a nd s o forth.

4. ASC LMI signaling information.

5. The fifth is c ur r en tly unused.

6. Service m o du le f eat ur e in fo r mat io n.

7. Service modu le rate control c o n fig ur a t io n data.

axisLines

The axisLines section consists of four subsections.

1. The serialI n te rface contai ns i n fo rm at io n ab ou t t h e ser i al (mainte na nc e an d co n tr ol p ort s ) l ines in

the shelf .

2. The etherne tInterface contains information about the Ethernet LAN port in the shelf.

3. The dsx1 cont ain s informat ion about conf igurat ion, alarm conf igu ration, alarm st atus, an d counter s

for th e D S 1 lines .

4. The dsx3 cont ain s informat ion about conf igurat ion, alarm conf igu ration, alarm st atus, an d counter s

for th e D S 3 lines .

axisServices

The axisS er vi ces s ect io n s co nsists of the Cisco M G X 8 22 0 ser v ice . This sect io n co nt ai ns in fo r mat io n about Frame Relay channel configurations, configurable parameters, and LMI signaling. This section also contains similar MIB objects for ATM services.

The services for Frame Relay are further organized as shown in Figure 3-7.

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Figure 3-7 Services Tree

The MIB is distributed as a tex t file ( A S N .1 ) on a diskette th at can be pr in ted a nd u sed to co m p il e t he MIB in to an S N MP manager. The MIB (and Cis c o MGX 822 0 shelf) c an a ls o be mana ge d f ro m CW M (Release 8.1 and higher). For complete details of managing the shelf from CWM, refer to the Cisco WAN Manager Operations Guide.

Note MIB variables are identified as read-write or read only. Read-write variable can be accessed by both

GET and SET SNMP comm ands. Read- only var ia ble ca n be acce ss ed by GET comma n ds on ly.

When setting a MI B variable in a table, the “enable” variable must also be set in the same SNMP PDU.

TFTP User Interface

The Cisc o MGX 8 2 20 s h el f in R ele as e 5.0 su p po r ts the tra nsf er o f da ta file s b e tween the shelf an d a workstation using Trivial File Transfer Protocol (TFTP). The functions provide d by these file transfers are the configuring and collection of statistics and the downloading of Cisco MGX 8220 firmware.

In order to p er fo r m a file tran sf er t he wo r kst ati on must est ab li sh connect ivity wi th t he shelf ei th er through the control port (using SLIP) or through the in-band port. In both cases TCP/IP protocol is employ ed and th e shel f mus t be ass ign ed an IP add re ss. F or de tai ls o n est abli shi ng conne ctivity, see th e “Setting-Up Management Connectivity to the Cisco MGX 8220 Shelf” section on page 3-8.

Upgrading Firmware

Cisco MGX 8220 shelves are shipped with the latest version of the firmware already preloaded. Cisco MGX 8220 firmware upgrades can be downloaded over the network. Firmware and firmw are upgrades for the Cisco MG X 8 22 0 she lf ar e also d is t ribut ed as a Firm ware Media Ki t o n d iske tt es .

Port Config port

Signaling LMI CLLM

State counter port

Channel config state counter

End point mapEnd point map Port Config port state signaling AIMUX port

State Countger

port signaling AIMUX counters

AIMUX state

Channel config state counter

Frame Relay

ATM

Services

H8263

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TFTP User Interface

The conte nts o f the k it ar e:

• ASC

• FRSM

• AUSM

• CESM

• FRASM

• IMATM

• MIB

TFTP, either through the control port or in-band ATM, is used for downloading firmware from a workstation into the Cisco MGX 8220 modules.

The host u s es the followin g co mm a nd sequence to d ownlo ad the firmware :

1. tftp dest_I P _add

dest_IP_add is the IP address of the Cisco MGX 8220 shelf receiving the downloaded firmware

(via Ethernet, control port, or in-band connection).

2. tftp> bin

3. tftp> put source_file_name d e st_file_n a me

source_file_name is the name of the firmware source file (this can be any name the user has chosen to store the firmware).

dest_fil e_ name is th e name of th e file to which t he firmwar e is to b e dow nloade d, this mu s t b e AXIS_ASC_1_slot#.FW for downloading to a service module, for example, AXIS_ASC_1_9.FW for downloading firmware to the service module in slot 9. AXIS_ASC_1_0.FW for downloading firmware to the ASC for use in any slot 5 - 14. AXIS_ASC_AC TIVE.FW for downloading to the active ASC. AXIS_ASC_STANDBY.FW for downloading to the standby ASC.

If the downloa d p roces s is dis r up ted fo r a time ou t or other su c h errors , restart th e TFTP d ownloa d process without resetting the Cisco MGX 8220 shelf.

If th ere is a hardware or system failure that req uires resetting t h e card being downloaded, the firmware must be downloaded using the backup boot procedure. This is a two step procedure.

1. Download the boot firmware.

2. Download the on-line firmware.

If a backup boot procedure becomes necessary, contact technical support for assistance. After the f i rmware f ile h as b een tr ansfer re d compl e tely a nd su cces sful l y, the module sh ould be reset fo r

the d ow nloaded firmware to take e ffect.

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Configuring and Collecting Statistics

Configur in g statistic s s p eci fies to the she lf w he r e st atistic co u nt er s ar e to be collected. A file is constructed that lists the statistic counters to be collected and is downloaded into the shelf using TCP/IP TFTP.

Collec tin g statistic s causes the stat ist ics to b e tr ansferr ed as a data file to the w or k stat io n . T h e workstation first requests the statistics and the Cisco MGX 8220 shelf responds by uploading the statistic file to the workstation. A list of statistics counters for each card type is provided in Appendix B, “Speci ficati on s .”

The method of collecting statistics in Cisco MGX 8220 conforms to the standards employed in IGX, IPX, and Cisco BPX nod es. CWM (R elease 7. 2 and lat er) supp orts the stan dard TFT P me thod of configurin g an d co lle cting stat is ti cs and can be u s ed o n th e w or k stat io n th at is att ach ed to the C isco MGX 8220 shelf for this purpose. CWM provides a convenient and easy-to-use graphical user interface (GUI) for both configuring the statistics to be collected and actually collecting those statistics from the Cisco MGX 8220 shelf. Using CWM relieves the user of knowing and constructing the file formats require d fo r co rr ec tl y t r an sfe rr in g th e s tat ist ics files.

Each type of statistic collected in WAN switching networks is categorized under a major grouping known by an object type name and an object type number, and minor grouping known as a subtype. Within the subtype, the statistic has a statistic type number. For example, the statistic “A TM Cell Header HEC Errors” has an object type name of IPX-ATM, an object type of 2, a subtype of 1, and a statistic type of 45. This combination of gr oups and type number uniquely identify a particular type of statist ic.

Configuring Statistics

Each Cisco MGX 8220 statistic can be configured individually for collection. To configure statistics, the work station tr an s f ers a file ( file name = enable.s ta ts ) u sing TFTP to the Cis co M G X 8220 s he lf , which specifies those statistic types to be collected. The specified statistics are grouped by object type, then by ob je ct subt yp e. M ult ipl e obje ct t ype s e ach cont a inin g mu lt ipl e ob je ct subt yp es, e a ch c onta in ing multip le s tat istic types can b e s pe c ifie d in o ne fil e.

Collecting Statistics

To collect statistics from the Cisco MGX 8220 shelf, the workstation uses the following TFTP command to issue a r equest:

Get Nodename.mmddyyhhmm

• Nodename is the node name given to the Cisco MGX 8220 shelf.

• mmddyyhhmm is the date /time exp re s s ed in G M T.

Upon receipt of this message, the shelf responds with a file containing the collected statistics, as shown in Table 3-2.

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Statistics Collection File Format

Configu rat i on Save and Restore

The Cisco MGX 8220 shelf provides save and restore functions, which are performed using the TFTP facility.

The save func ti on al lows a use r to co py a s ervi ce module ’s cur r e n t configur a t io n file ( w hi ch is s aved on a disk on the ASC) to a network file system. The restore function allows a user to copy a service module’s configuration file from the network file system to the ASC’s disk. Usin g th ese functions, th e configuration files for Cisco MGX 8220 service modules can be backed up to an inde pendent network system an d later resto r ed if the co n fig ur at io n files in t he Cisco M G X 8 22 0 sh elf b e c om e lo s t or corru pt e d , o r if the con fig ur a t io n need s to b e r es t or e d t o a pr evio us ve r sion.

Table 3- 2 Format of Statistics Collection File

Field Description Field Size

Fixed Head er Section Domain number of the Cisco MGX 8220 shelf 1 B Node number of the Cisco MGX 8220 shelf 1 B Release nu mb er ( f or ex am p le, 7 25a fo r Release 7.2 .5 .A ) 4 Bs Status byte 1 B Peak Flag 1 B File collection interval 1 B Bucket in terval 1 B Number of Object Types 1 B Data Dependent Section Object Type identifier 1 B Number of Object Subtypes 2 Bs Object Subtype identifier 1 B Key informat ion variable leng t h Number of S t at ty p es 1 B Stat type 1 B Stat value 4 Bs Peak value 4 Bs REPEAT Sta t t yp e, St at v a lu e an d Pe ak v a lu e f or ea ch b uc k et

until number of stat types is satisfied

n Bs

REPEAT Object Subtype section n Bs REPEAT Object type section n Bs

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TFTP User Interface

Save TFTP Command Format

This mech an is m allows copyin g a F R S M co nfigu r at io n fi le (saved o n th e PC MCIA har d d rive) to a network file system using a TFTP file command.

TFTP file name format

AXIS_SM_1_ slot number.PRI. service user password

TFTP client operation

<UNIX prompt> tftp AXIS i p address > bin > get AXIS_SM_1_5.PRI.serviceuser

For example, the comm and get AXIS_SM_1_5.PRI.serviceuser saves the con fig ur ation file f or t he service m o du le in sl ot 5 by r ead ing the F R S M 5 co n fig ur at ion sto re d in th e PCMI CI A h ar d dr ive.

Restore TFTP Command Format

This mech an is m allows the u ser t o co py a F R S M co n figur at io n file f ro m a n e twork file sys t em to the correspond ing FRSM c o nfi g u r at i on file on A S C PC MC I A har d d r ive .

FTP file name format

AXIS_SM_1_ slot number .PRI. service user passw ord

TFTP client operation

<UNIX prompt> tftp AXIS address > bin > put network file name AXIS_SM_1_5.PRI.serviceuser

This will restore the FRSM 5 configuration. For example, put AXIS_SM_1_5.PRI.serviceuser places th e configurat io n fil e o nt o th e service

module in slot 5 .

Note The uploaded file is a binary file.

Note You will lose some configuration changes if they are made after the back-up was performed.

The configuration fil e contains feature information. If the y do not mat ch the feature inform ation on the FRSM , the FR SM go es in to mismatch state.

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MGX 8220 Service Modules

Introduction

The MGX 8220 shelf contains 16 slots. Each slot can accommodate a front card and a back card. Six slots are r es e rve d fo r co mm o n eq ui pm en t modules as d escribed in Ch ap ter 2, “Common Equipment Description”.

The remaining ten slots (slots 5 through 14) are reserved for Service Modules (SMs). Service Modules provide f u nctional ity f o r s uc h s er vi ces as F r am e Relay, AT M , an d Circu it Emula tio n .

This chapter describes the Service Modules supported by the MGX 8220.

• Frame Relay Ser vice Modules ( FRS M s ) , p ag e 4- 2

• ATM UNI Service Module, page 4-17

• Inverse Multiplexer for ATM Trunk Module, page 4-23

• Circuit Emulation Service Modules, page 4-26

• Service Module Back Cards, page 4-32

Although S er v ice R e so urce Modu les (SRMs) ar e c ateg or i zed as core eq u ipm en t, th ey a lso p ro vi de optional functions for the SMs.

• The AX-SRM T1/E1 can provide 1:N redundancy for the other service modules. The SRM is

described in Service Resource Modules, page 2-22

• The AX-SRM-3T3 provi des thre e T3 servi ce line s to ca rry mult iple T 1 servi ce lines . The SR M-3T3

is described in the AX-SRM-3T3, page 2-24

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Frame Relay Service Modules (FRSMs)

Frame Relay Ser v ice Modules (FRSMs)

The primary function of the FRSM is to convert between the Frame Relay form atted data and A TM/AAL5 cell-formatted data. There are two main types of FRSMs, those for T1 or E1 lines and those for high speed serial lines.

All FRSMs include the following features:

• ForeSight closed-loop rate control and per-VC queuing

• Wire-speed performance on all ports

• SVC and multicast support within Cisco service nodes

• Standard and enhanced LMI management interfaces (Annex A and Annex D)

Module-s p eci fic fe atu r es are descr ib ed i n th e s e cti on s listed be low.

• FRSM Conn ection Types , p a g e 4-2

• FRSMs for T1 and E1 lines, page 4-7

• FRSMs for High Speed Serial Lines, page 4-9

• Frame Relay Access Service Module, page 4-11

FRSM Connec t i on Types

FRSMs convert the header format and translate the address for

• Frame Relay port number and DLCI

• ATM-Frame U N I (F U NI ) por t n u mbe r an d frame addre ss o r frame forwar din g p o rt

• ATM Virtual Con n ect io n Id en ti fier (V P I /V C I)

This section describes the connection types that can be configured on the FRSM to perform these functions.

• Frame-Relay-to ATM Network Interworking (NIW), page 4-2

• Frame-Relay-to ATM Service Interworking (SIW), page 4-4

• Fra me Fo rwar din g, pa ge 4-6

• Frame-based User-to-Network Interface (FUNI), page 4-6

Frame-Relay-to ATM Network Interworking (NIW)

Frame Relay-to-ATM network interworking (NIW) supports a permanent virtual connection (PVC) between two Frame Relay users over a Cisco network or a multi-vendor network. The traffic crosses the network as ATM cells. To specify NIW for a connection, add the connection with a channel type of networ k in terwor king.

Figure 4-1 shows a BPX 8620 network with network interworking connections.

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Figure 4-1 BPX 8620 Network with Networking Interworking Connections

Cell Loss Priority and Congest ion In dica tio n for NIW connectio ns

In addition to frame-to-cell and DLCI to VPI/VCI conversion, the network interworking feature maps cell loss priority (CLP) and congestion information from Frame Relay to ATM formats. The CLP and congestion indicators can be modified for individual connections entering the cnfchanmap command.

Frame Relay–to–ATM Direction

Each Frame Relay/ATM network interworking connection can be configured as one of the following DE to CLP mapping schemes:

• DE bit in the F r am e Re lay f r am e is map ped to th e C L P bit of every ATM cell ge nerated by t he

segmentation process.

• CLP is always 0.

• CLP is always 1.

ATM–to–Frame Relay Direction

Each Frame Relay/ATM network interworking connection can be configured as one of the following CLP to D E mappi ng schemes:

• If one or more ATM cells be long ing to a fra me has it s CLP f ield se t, the DE fiel d of the F rame Rela y

frame will be se t .

• No mapping from CLP to DE.

Congestion Indicatio n

Congest ion on th e Fra me Re lay/ ATM network in te rw ork ing con ne cti on is fl agge d by the EFCI bit . The setting of this feature is dependent on traffic direction, as described below.

Frame Relay–to–ATM Direction

EFCI is always set to 0.

ATM–to–Frame Relay Direction

If the EFC I field in the last ATM cell of a segment ed fra m e r ec eived is s e t, th en F EC N o f th e F r ame Relay frame will be set.

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PVC Status Management

The management of the ATM layer and FR PVC Status Management can operate independently. The PVC status from the ATM layer will be used when determining the st atus of the FR P VC. However, no direct actions of mapping LMI A bit to OAM AIS will be performed.

Frame-Relay-to ATM Service Interworking (SIW)

By specifying “service inte rwor king ” as the channel type when adding a Frame Relay PVC to an FRSM, all PVC d ata is sub ject to s er v ice interw o rk in g tr an slation an d m a pp in g in both th e F r ame Relay–to–ATM and ATM–to–Frame Relay directions.

Figure 4-2 shows a BPX 8620 network with service interworking connections.

Figure 4-2 BPX Network with Service Interwor king Connections

Figure 4-2 shows an MGX 8220 unit and an FRSM to the right with three Frame Relay connection endpoints. These connections indicate the Frame Relay ends of service interworking connections. The diagr am s h ow s s ome po s si b il ities fo r terminati ng the ot her en ds of the con nection s .

• ATM FUNI (Framed UNI) port on an FRSM

• ATM UNI port on an AUSM

• ATM UNI port on a BPX 8620 ASI card

The service interwo r ki ng is full Fr ame Relay Fo rum (FR F.8) compl ian t an d pr ovid es f u ll sup p or t for routed and bridged PDUs, transparent and tra nslation modes, and VP translation.

Cell L oss Pri or ity and Conges tion Indica t ion

In addition to frame-to-cell and DLCI to VPI/VCI conversion, the service interworking feature maps cell loss pr iori ty a nd con ge sti on info rmat i on bet ween t he Frame Rela y and ATM formats. The CLP and conges t i o n parame t e r s can be m o di fie d f or individual conne ctions w ith the cnfchanmap command.

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Frame Relay–to–ATM Direction

Each Frame Relay–to–A TM serv ic e int erw orki ng c onn ect ion ca n be con f igure d as on e of the follo wi ng Discard Eligibility (D E) to cell los s priorit y (C LP ) s c hemes:

• DE bit in the F r am e Re lay f r am e is map ped to th e C L P bit of every ATM cell ge nerated by t he

segmentat io n pr o cess o f th e frame.

• CLP is always 0.

• CLP is always 1.

ATM–to–Frame Relay Direction

Each Frame Relay–to–A TM serv ic e int erw orki ng c onn ect ion ca n be con f igure d as on e of the follo wi ng CLP to D E mappi ng schemes:

• If one or more ATM cells belonging to a frame has its CLP set, the DE field of the Frame Rela y

frame will be se t .

• DE is always 0.

• DE is always 1.

Setting u p th e ce ll loss p ri ori ty optio n i s ac compli s hed t hro ugh th e MGX 8 220 cnfchanmap (configure channel map) co mm an d .

Congestion Indicatio n

Frame Relay–to–ATM Direction

Each Frame Relay–to–A TM serv ic e int erw orki ng c onn ect ion ca n be con f igure d as on e of the follo wi ng Forward Explicit Congestion Notification (FECN) to Explicit-Forward Congestion Indicator (EFCI) schemes:

• FECN bit in th e Frame Relay frame is mapped to the EFCI bit of ever y ATM cell ge nerated by the

segmentat io n pr o cess o f th e frame.

• EFCI is always 0.

• EFCI is always 1.

ATM–to–Frame Relay Direction

Frame Relay–to–ATM service in terwork in g co n nections u se the fo llow in g E F C I to F EC N /BECN mapping schemes:

• If the EF CI bit in t he las t ATM cel l of a s eg mente d fr ame re cei v ed is set to 1, the FECN o f the Fram e

Relay frame will be set to 1.

• BECN i s alw ays set t o 0 .

Setting up the congestion indic ation option is accomplished through the cnfchanmap (con fig ure channel map) co mm an d .

Command/Respo ns e Mapping

Command/Response Mapping is provided in both directions.

Frame Relay–to–ATM Direction

The FRSM m a ps the C/R b it of t he r ece ived Fr am e R elay fram e t o t he C P CS - UU least-si gnifi can t bi t of the AAL5 CPCS PDU.

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ATM to Frame Relay Direction

The least -s ig ni fica nt bit of t he CPCS-UU is m apped to th e C / R b it o f th e F r ame Relay frame.

Translation and Transparent Modes

Each service interworking (SIW) connection can exist in either transla tion or tran s parent mode. In translation mode, the FRSM translates protocols between the FR NLPID encapsulation (RFC 1490) and the ATM LCC encapsulation ( RFC 1 48 3 ). I n t ran s pa re nt m o de , t he F RSM does no t t r an slat e. Translation mode support includes address resolution by transforming address resolution protocol (ARP, RFC 826) and inverse ARP (in ARP, RFC 1293) between the Frame Relay and ATM formats.

Frame Forwarding

The FRSM ca rd c an be co n figured as “Fram e For ward in g” on a port-by-port basis. Frame for ward in g op erates the s am e as standar d F ram e Relay excep t

• The 2- byte Q .9 2 2 he ad er is no t as su m ed /i nter pr et ed .

• All frames rec eived are m a pp ed t o a sp ecific connec tion if it ex ists. Othe rw i se, t he f ra mes ar e

dropped.

• No DE/CLP or FECN/EFI mapping is performed.

• “Ill egal he ad er co u nt ” and “Invalid DLCI” statistics are not kept.

• “Discarded frame count due to no connection” statistic is kept .

Frame-based User -to-Net wo r k Interface (FUNI)

All FRSMs support the AT M Frame-based User-to-Network Interface (FUNI). When a frame arrives from the FUNI interface, the FRSM removes the 2-byte FUNI header and segments the frame into ATM cells by using AAL5. In the reverse direction, the FRSM assembles ATM cells from the network into a frame by using AAL5, adds a FUNI header to the frame, and sends it to the FUNI port.

Loss Priority Indicatio n

Loss P r io rity Indicat ion mappin g i s p r ovided i n bo th dir e c ti on s .

FUNI-to-ATM Direction

The CLP bit on the FUNI header is mapped to the CLP bit of every ATM cell that is generated for the FUNI frame.

ATM-to-FUNI Direction

CLP bit in the FUNI h eader is a lways set to 0.

Congestion Indicatio n

Congestion Indication mapping is provided in both directions.

FUNI-to-ATM Direction

EFCI is set to 0 for every ATM cell generated by the segmentation process.

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ATM-to-FUNI Direction

If the EFCI field in the last ATM cell of a received segmented frame is set to 1, the CN bit in the FUNI header is s et to 1 . T h e tw o r eserve bit s (th e same po sit io ns as C /R an d BECN in Frame Relay header) are always set to 0.

FRSMs for T1 and E1 lines

There ar e two type s of FRSM modules for T1 and E1 lines—Franctional (unchannelize d) modules and channelized modules. Both these module types offer 1:N redundancy via the optional SRM (see Service Resource Modules, page 2-22).

Fractional FRSMs

Each inter fa ce of a fr ac ti on al F R SM supports a si ng le port at 56 kbps o r nx64 kbps. Each port can be independently configured to run Frame Relay UNI (FR-UNI), Frame Relay NNI

(FR-NNI), ATM-FUNI, or frame forwarding as described in FRSM Connection Types, page 4-2. Fractional FRSM cards include

• AX-FRSM-4T1/E1: four E1 or T1 interfaces. The 4-port FRSM supports up to a maximum of 256

connecti on s ( vi r tu al cir cu it s) , w h ich c an be allocated across th e T1 o r E1 li n es i n a ny man n er.

• AX-FRSM-8T1/E1: eight E1 or T1 interfaces. The 8-port FRSM supports a maximum of 1,000

connecti on s. The max im um frame s i ze is 4 5 10 by tes for Fr ame Rela y an d 409 6 f o r ATM-FUNI.

Channe lized FRSMs

Each in ter fa ce of a channelized F R S M sup p or t s mu ltiple po r ts a t 5 6 kb ps or nx64 kb ps. Each port can be independently configured to run Frame Relay UNI (FR-UNI), Frame Relay NNI

(FR-NNI), ATM-FUNI, or frame forwarding as described in FRSM Connection Types, page 4-2. Channeli zed F R S M ca rd s i nc lu de

• MGX-FRSM-8T1-C—eight channelized T1 interfaces support 24 ports per interface.

• MGX-FRSM-8E1-C—eight channelized E1 interfaces support 31 ports per interface.

The 8-port channelized FRSM supports a maximum of 1,000 connections. Figure 4-3 is an illustration of 4-port and an 8-port FRSM front cards for T1 or E1 lines.

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Figure 4-3 Example of T1/E1 FRSM Front Cards

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FRSMs for High Speed Serial Lines

There are th ree FRSMs f o r hi gh s p ee d se ri al li ne s .

• AX-FRSM-HS1 supports back cards that provide eithe r two HSSI interfaces or four X.21

interface s .

• MG X- F R S M-HS1/B su pport s a back card t hat pr ovi des four V.35 i nterfac e s .

• MGX-FRSM-HS2 supports a back card that provides connections for two HSSI lines.

AX-FRSM-HS1 and MGX-FRSM-HS1/B Features

Both FRSM-HS1 modules support the following features:

• Card throughput of 20 Mbps (bidirectional) at an average frame size of 130 octets.

• HSSI line rates of up to 16 Mbps when a single port is configured per card. HSSI line rates of up

to 8 Mbps when both HSSI ports are configured.

• X.21 line rates of 1 port x 10 Mbps, 2 ports x 8 Mbps, 3 ports x 4 Mbps, or 4 ports x 4 Mbps.

• Up to 200 virtual connections in DTE and DCE modes.

• 1:1 re dun da ncy us ing Y-cabling.

• All standard MGX 8220 edge concentrator FRS M features, including the same data link protocols

as other FRSMs.

• ForeSigh t i nt egr ate d on t he h ig h-sp eed F R S M as a feature license.

• FR-ATM network internetworking and service internetworking support.

• Con fig ur ation of ATM Frame us er ne tw or k interf ace (FUN I) or ATM Frame NNI on a per-p ort

basis.

• Frame forwarding and FUNI support.

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Figure 4-4 Example FRSM-HS1 Front Card

MGX-FRSM-HS2 Features

The MGX-FRSM-HS2 is a two-card set consisting of a front card and a back card that supports two HSSI lines.

• The MGX-FRSM-HS2 s upport s tw o po rt s (on e per l ine ) at spe eds of nxT1 and nxE 1 incr eme nt s up

to the HSSI maximum of 52 Mbps per line. The HSSI ports can operate either as DTE or DCE.

• Any combination of up to 10 very high-speed frame servic e module card sets may be installed in

an MGX 8220 shelf in slots 5 to 14.

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• The very high-speed FRSM (MGX-FRSM-HS2) supports all the features of the standard FRSM

(servi ce i nter wor kin g, F R/ATM networ k, FU NI, an d so on ).

• As with the other high-speed frame service modules, 1:1 hot-standby redundancy is supported

using Y-cabling on the back cards.

Frame Rela y Access Service Module

The Frame Relay Access Service Module (FRASM) is a two-card set consisting of a FRASM front card (support in g cha nn eliz ed, T1, 8 p ort), and a n 8T1 ba ck c ard. Up t o te n FR ASM mod ul es ma y b e in sta lle d in a shelf in slots 5 through 14.

The main function of the FRASM is to allow IBM network devices and mainframes (IBM 3270 terminals communicating with an IBM mainframe) operating under SNA/SDLC or 3270/BSC (binary synchro nou s) p rot ocol s t o com mun ica te wi th ea ch othe r usin g Fr ame R el ay o v er an ATM networ k. Thi s is an alternative to the conventional method of using T1, E1, V.35, or X.21 leased lines.

FRASM modules support the following logical connections and protocols:

• PU4 (P hysica l U nit 4) to PU 2 over 32 7 0/ B i s yn c link

• PU4 to PU2 over a SNA/SDLC link

• PU2 to PU2 over a SNA/SDLC link

• PU4 to PU4 over a SNA/SDLC link

FRASM modules support the following end-to-end connections on a connection-by-connection basis:

• SNA/SDLC to SNA/SDLC (STUN for Serial TUNnel)

• SNA/SDLC to Frame Relay (BNN for Boundary Network Node)

• 3270/Bisync to 3270/Bisync (BSTUN for Block Serial TUNnel)

STUN Connections

STUN, short for Serial TUNnel, is an IBM technique for transmitting SNA (SDLC) traffic over Frame Relay n e t wo r ks by encap s ul a t in g the SNA fram e s w ithin Frame Relay f r am es using the p r otocol o f RFC 1490.

There are two methods of achieving this

1. passthrou g h (o r tr an s p aren t)

The pass through method encapsulates the entire SNA data stream including data and control fields for tran smissi on ov er the Fr ame Rel ay netw ork. In thi s met hod, the Frame Re lay net work i s entirel y transpar en t t o the SNA netw or k .

2. local ackn owled g m en t

The local acknowledgment method terminates the SNA traffic at the Frame Relay network interface

and encap su lat e s d at a o n ly, the SNA fr am es a re th en r eco n str u cted at th e o th er en d . Both passthrough and local acknowledgment methods are supported by the FRAM. For both m e thods, SNA tr affic rec eived by the FRA SM is converted firs t to a F r ame Relay f or mat and

is further co nverted into cells fo r tran s mission over an ATM network The pr o ces s is th en perform ed in reverse order at the other end.

STUN is used wher e t h e r eq ui re men ts cal l f o r SNA in an d SNA o u t with the i nt er ven in g Fra m e R el ay and ATM segments be ing use d merely t o tr an s po r t t h e S NA tr affic.

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An applic ati on of a ST U N con nection is show n in Fi g ure 4- 5. An SNA/SD LC devic e is co nn ect ed to a FRASM port using SD LC protocol. The traffic is first converted to Fr ame Relay and then to ATM cells for transmission over the network. At the other end, the traffic is first converted back to Frame Relay and the SD LC traffic is th en ex tr act ed f or t ra nsmission to a f ron t- en d co m mu ni cat io n pr o ce ss or an d then to t he I BM mainframe.

Figure 4-5 Using FRASM for a STUN Connection

Using STUN, the FRASM supports

• Point-to-point SDLC lines.

• Multidropped SDLC devices over a single logical port. These devices can be assigned to different

connecti on s.

• Multiple logical connections over a single logical port.

• Virtual multidrop in which SDLC devices attached to FRASM modules on different MGX 8220

shelves can be configured to appear as multidropped devices on a single multidrop line.

BSTUN Connections

BSTUN, short for Block Serial TUNnel, is an IBM technique for transmitting bisync traffic over Frame Relay networks by encapsulating the bisync frames within Frame Relay frames using the protocol of RFC 1490.

There are two m et ho d s.

1. passthrou g h (o r tr an s p aren t)

The passt hro ug h m e th od en ca psu lates th e e nt ire bi syn c da ta stream in cl ud in g da ta an d co nt ro l fields for transmission over the Fra me Relay network. In this method, the Frame Relay network is entirely transparent to the Bisync network. Passthrough mode is supported for 2780, 3780, and 3270 IBM devices.

2. local ackn owled g m en t

The local ack nowledgme nt m e th od t er m in at es t he Bisync tr affic at th e F r ame Relay ne tw or k interface and en ca psu la tes d ata only. The Bisync fr am e s are th en re co nst ru ct ed at t he oth er. Local acknowledgment mode is supported for 3270 devices.

For both methods, Bisync traffic received by the FRASM is converted first to a Frame Relay format and is then fu rther co nv erte d into cells for transmis sion over a n ATM network, the proce ss is th en perfor med in revers e or der at th e other en d.

BTUN can also be used for a transparent text mode which permits the unrestricted coding of data (for exampl e , bina ry, fl o a ti ng poin t, and s o f orth).

BSTUN is u s ed w h er e t h e r eq ui r emen ts call fo r Bi s ync in and Bi s y nc ou t w it h t he in t er ven in g Fra m e Relay and ATM segments being used mere ly to transport the Bisync traffic.

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Cisco MGX 8220 Installation And Configuration Manual

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