Alcatel-Lucent 6624 User Manual
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Part No. 031496-00,Rev. C

September 2005

OmniSwitch 6624/6648/

6800/7700/7800/8800

Troubleshooting Guide

www.alcatel.com

OmniSwitch Troubleshooting Guide September 2005

i

This troubleshooting guide documents OmniSwitch 6624/6648/770/7800/8800 hardware, including chassis and associated components, and Release 5.1 software. The specifications described in this guide are subject to change without notice.

Copyright © 2006 by Alcatel Internetworking, Inc. All rights reserved. This document may not be reproduced in whole or in part without the express written permission of Alcatel Internetworking, Inc.

Alcatel® and the Alcatel logo are registered trademarks of Alcatel. Xylan®, OmniSwitch®, OmniStack®, and Alcatel OmniVista® are registered trademarks of Alcatel Internetworking, Inc.

OmniAccess™, Omni Switch/Router™, PolicyView™, RouterView™, SwitchManager™, VoiceView™, WebView™, X-Cell™,X-Vision™,and the Xylan logo are trademarks of Alcatel Internetworking, Inc.

This OmniSwitch product contains components which may be covered by one or more of the following U.S. Patents:

U.S. Patent No. 6,339,830

U.S. Patent No. 6,070,243

U.S. Patent No. 6,061,368

U.S. Patent No. 5,394,402

U.S. Patent No. 6,047,024

U.S. Patent No. 6,314,106

U.S. Patent No. 6,542,507

26801 West Agoura Road

Calabasas, CA 91301

(818) 880-3500FAX (818)880-3505info@ind.alcatel.com

US Customer Support—(800)995-2696International CustomerSupport—(818)878-4507Internet—http://eservice.ind.alcatel.com

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OmniSwitch Troubleshooting Guide September 2005

Contents

 

About This Guide .........................................................................................................

xv

 

Supported Platforms .........................................................................................................

xv

 

Who Should Read this Manual? ......................................................................................

xvi

 

When Should I Read this Manual? ..................................................................................

xvi

 

What is in this Manual? ...................................................................................................

xvi

 

What is Not in this Manual? ...........................................................................................

xvii

 

How is the Information Organized? ...............................................................................

xvii

 

Related Documentation ..................................................................................................

xvii

 

Before Calling Alcatel’s Technical Assistance Center ....................................................

xx

Chapter 1

Troubleshooting the Switch System ......................................................................

1-1

 

In This Chapter ................................................................................................................

1-1

 

Introduction .....................................................................................................................

1-2

 

Troubleshooting System for OS-6624/6648 and OS-7/8XXX .......................................

1-3

 

Advanced Troubleshooting .............................................................................................

1-9

 

Dshell Troubleshooting .................................................................................................

1-11

 

Troubleshooting NIs on OmniSwitch 7700/7800/8800 .........................................

1-21

 

OmniSwitch 6624/6648 Dshell Troubleshooting ...................................................

1-23

 

Accessing Dshell on Idle Switches ..................................................................

1-25

 

Using AlcatelDebug.cfg ................................................................................................

1-26

 

Troubleshooting IPC on OS-6/7/8XXX Series of Switches .........................................

1-27

 

Debugging IPC .......................................................................................................

1-27

 

OmniSwitch 6624/6648 Example ..........................................................................

1-34

 

Port Numbering Conversion Overview .........................................................................

1-36

 

ifindex to gport .......................................................................................................

1-36

 

gport to ifindex .......................................................................................................

1-36

 

Converting from lport .............................................................................................

1-36

 

OmniSwitch 7700/7800/8800 (Falcon/Eagle) Example ..................................

1-36

 

OmniSwitch 6624/6648 (Hawk) Example ......................................................

1-37

Chapter 2

Troubleshooting Switched Ethernet Connectivity ..............................................

2-1

 

In This Chapter ................................................................................................................

2-1

 

Overview of Troubleshooting Approach ........................................................................

2-2

 

Verify Physical Layer Connectivity ................................................................................

2-3

 

Verify Current Running Configuration ...........................................................................

2-5

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...................................................................................................Verify Source Learning

2-6

 

Verify Switch Health .......................................................................................................

2-7

 

Verify ARP ......................................................................................................................

2-7

 

Using the Log File ...........................................................................................................

2-8

 

Checking the 7700/7800 Nantucket Fabric ..............................................................

2-8

 

Checking the 7700/7800 Nantucket Fabric for Interrupts, Data Counts and

 

 

Error Counts ............................................................................................................

2-9

 

Checking the Traffic Queue on the NI .....................................................................

2-9

 

Check for Catalina (MAC) or Port Lockup ............................................................

2-10

Chapter 3

Troubleshooting Source Learning .........................................................................

3-1

 

In This Chapter ................................................................................................................

3-1

 

Introduction .....................................................................................................................

3-2

 

Troubleshooting a Source Learning Problem .................................................................

3-3

 

Advanced Troubleshooting .............................................................................................

3-5

 

Dshell Troubleshooting ...................................................................................................

3-7

 

OS-6600 .................................................................................................................

3-10

Chapter 4

Troubleshooting Spanning Tree ............................................................................

4-1

 

In This Chapter ................................................................................................................

4-1

 

Introduction .....................................................................................................................

4-1

 

Troubleshooting Spanning Tree ......................................................................................

4-2

 

Dshell ..............................................................................................................................

4-5

 

Generic Troubleshooting in Dshell ...............................................................................

4-10

 

Event Trace (stpni_traceprint) ................................................................................

4-10

 

PORTATCH ....................................................................................................

4-11

 

PORTDELE .....................................................................................................

4-11

 

ADDVLAN .....................................................................................................

4-11

 

MODVLADM .................................................................................................

4-12

 

MODVLSTP ....................................................................................................

4-12

 

ADDQTAG .....................................................................................................

4-12

 

DELQTAG ......................................................................................................

4-12

 

MDEFVLAN ...................................................................................................

4-13

 

PORTAGGR ....................................................................................................

4-13

 

PORTDISG ......................................................................................................

4-13

 

AGGR_UP .......................................................................................................

4-13

 

AGGRDOWN .................................................................................................

4-13

 

PORTJOIN ......................................................................................................

4-14

 

PORTLEAV ....................................................................................................

4-14

 

BRGPARAM ...................................................................................................

4-14

 

PTSTPMOD ....................................................................................................

4-15

 

PORTMOD ......................................................................................................

4-15

 

PORTVLBK ....................................................................................................

4-15

 

PVLANBLK ....................................................................................................

4-15

 

GMBPDU ........................................................................................................

4-16

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....................................................................................................GMIGBPDU

4-16

 

GM2FIXED .....................................................................................................

4-17

 

VMADDVPA ..................................................................................................

4-17

 

VMDELVPA ...................................................................................................

4-17

 

VMDEFVPA ...................................................................................................

4-17

 

TOPOCHGT ....................................................................................................

4-18

 

LINK_UP ........................................................................................................

4-18

 

LINKDOWN ...................................................................................................

4-18

 

NI_UP ..............................................................................................................

4-18

 

NI_DOWN ......................................................................................................

4-18

 

Physical and Logical Port Dumps ..........................................................................

4-19

 

Logical Ports (stpni_debugLport) ....................................................................

4-19

 

Physical Port (stpni_debugPport) ....................................................................

4-20

 

Physical and Logical Port Trace Display (stpni_debugport) ...........................

4-22

 

Socket Handler Traces ...........................................................................................

4-22

 

stpNISock_globals ...........................................................................................

4-22

 

stpNISock_warningprint ..................................................................................

4-23

 

stpNISock_traceprint .......................................................................................

4-23

 

Inter-NI Trace (stpNISock_intraceprint) .........................................................

4-24

 

Time-out Trace (stpNISock_totraceprint) .......................................................

4-24

 

Board Up (stpNISock_boardupprint) ..............................................................

4-24

 

stpNISock_printon ...........................................................................................

4-24

 

StpNISock_printoff .........................................................................................

4-24

 

CMM Spanning Tree Traces ..................................................................................

4-25

 

Trace Menu ......................................................................................................

4-25

 

stpCMM_traceprint .........................................................................................

4-25

 

Writing a PR for Spanning Tree ....................................................................................

4-26

 

Exception in Spanning Tree (NI and CMM case) ..................................................

4-26

 

Port Does Not Forward ..........................................................................................

4-26

 

Spanning Tree Unchanged When Port State Has Changed ....................................

4-27

 

Other Cases ............................................................................................................

4-27

Chapter 5

Troubleshooting BOOTP/DHCP/UDP Relay ........................................................

5-1

 

In This Chapter ................................................................................................................

5-1

 

Starting the Troubleshooting Procedure ..........................................................................

5-1

 

Use a Network Diagram ...........................................................................................

5-2

 

Use the OSI Model to Guide Your Troubleshooting ...............................................

5-2

 

UDP Relay Configuration Problems ........................................................................

5-2

 

Incorrect Server IP Address ...............................................................................

5-2

 

Forward Delay Timer ........................................................................................

5-3

 

Displaying DHCP Statistics ..............................................................................

5-3

 

UDP Relay and Group Mobility ...............................................................................

5-4

 

Advanced Troubleshooting for UDP Relay ....................................................................

5-5

 

Dshell ..............................................................................................................................

5-6

Chapter 6

Troubleshooting DNS ................................................................................................

6-1

 

In This Chapter ................................................................................................................

6-1

 

Introduction .....................................................................................................................

6-1

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......................................................................................Troubleshooting a DNS Failure

6-2

 

Starting the Troubleshooting Procedure ...................................................................

6-2

 

Layer 7 DNS or Name Resolution Issue ..................................................................

6-2

 

DNS Configuration Considerations ................................................................................

6-3

Chapter 7

Troubleshooting Link Aggregation .......................................................................

7-1

 

In This Chapter ................................................................................................................

7-1

 

Link Aggregation Limits and Guidelines ........................................................................

7-2

 

OmniSwitch 6624/6648 Restrictions .......................................................................

7-2

 

Troubleshooting a Link Aggregation Failure ..................................................................

7-3

 

Verify the Configuration ..........................................................................................

7-3

 

Source Learning .......................................................................................................

7-5

 

Link Aggregation Affecting Other Traffic ...............................................................

7-5

 

Problems Creating a Group ......................................................................................

7-5

 

Problems Deleting a Group ......................................................................................

7-5

 

LACP 802.3AD ........................................................................................................

7-6

 

Advanced Link Aggregation Troubleshooting ................................................................

7-7

 

6800 Link Aggregation Debug Functions .....................................................................

7-10

 

la_ni_agg_prt ..........................................................................................................

7-10

 

la_ni_port_prt .........................................................................................................

7-10

 

la_ni_port_up_prt ...................................................................................................

7-11

 

la_ni_port_stats_prt ................................................................................................

7-11

 

la_ni_info ...............................................................................................................

7-11

 

lagg_ni_Sock_help .................................................................................................

7-11

 

la_ni_trace_freeze ..................................................................................................

7-12

 

la_ni_trace_unfreeze ..............................................................................................

7-12

 

la_ni_kite_help .......................................................................................................

7-12

Chapter 8

Troubleshooting 802.1Q ..........................................................................................

8-1

 

In This Chapter ................................................................................................................

8-1

 

Troubleshooting 802.1Q .................................................................................................

8-2

 

Default VLAN Traffic ..............................................................................................

8-3

 

Tagged Packet on an Untagged Port ........................................................................

8-3

 

802.1Q with VLAN ID of 0 ..............................................................................

8-4

 

802.1Q and 64 Byte Packets ..............................................................................

8-4

 

Advanced Troubleshooting .............................................................................................

8-5

 

Dshell Commands ...........................................................................................................

8-7

Chapter 9

Troubleshooting Group Mobility ............................................................................

9-1

 

In This Chapter ................................................................................................................

9-1

 

Troubleshooting a VLAN Mobility Failure ....................................................................

9-2

 

Binding Rules ...........................................................................................................

9-3

 

Port Rules .................................................................................................................

9-3

 

Precedence ................................................................................................................

9-4

 

Advanced Troubleshooting .............................................................................................

9-5

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..............................................................................................................................Dshell

9-6

 

NI Debug Dshell .......................................................................................................

9-6

 

6800 Group Mobility Troubleshooting ...........................................................................

9-7

 

show vlan rules .........................................................................................................

9-7

 

gmHelp .....................................................................................................................

9-7

 

gmcKiteDebug .........................................................................................................

9-8

 

gmcShowPorts ..........................................................................................................

9-8

 

gmcShowRules .........................................................................................................

9-8

 

gmnKiteDebug .........................................................................................................

9-9

 

gmnKiteShowRules ..................................................................................................

9-9

 

gmnMacVlanShowBuffer ........................................................................................

9-9

Chapter 10

Troubleshooting QoS ...............................................................................................

10-1

 

In This Chapter ..............................................................................................................

10-1

 

QoS Behavior ................................................................................................................

10-2

 

Default ....................................................................................................................

10-2

 

QoS Queues and Ports ............................................................................................

10-2

 

Troubleshooting QoS ....................................................................................................

10-3

 

Information Gathering on Symptoms and Recent Changes ...................................

10-3

 

Starting the Troubleshooting Procedure .................................................................

10-3

 

QoS Activation .......................................................................................................

10-3

 

QoS Apply ..............................................................................................................

10-4

 

Invalid Policies .......................................................................................................

10-4

 

Rules Order ............................................................................................................

10-4

 

Viewing QoS Settings ............................................................................................

10-5

 

Viewing QoS Policy Rules .....................................................................................

10-5

 

Validation ...............................................................................................................

10-6

 

Example 1 ........................................................................................................

10-6

 

Example 2 ........................................................................................................

10-6

 

Example 3 ........................................................................................................

10-7

 

Correction ...............................................................................................................

10-8

 

Reflexive Rules ......................................................................................................

10-8

 

QoS Log .................................................................................................................

10-9

 

QoS Statistics .......................................................................................................

10-11

 

Debug QoS ...........................................................................................................

10-11

 

Debug QoS Internal ..............................................................................................

10-12

 

OmniSwitch 6624/6648 Dshell Troubleshooting .................................................

10-13

 

qosIxHelp ......................................................................................................

10-13

 

qosDBState ....................................................................................................

10-13

 

QoS Dump .....................................................................................................

10-13

 

Example QoS Rules ....................................................................................................

10-15

Chapter 11

Troubleshooting ARP ...............................................................................................

11-1

 

In This Chapter ..............................................................................................................

11-1

 

ARP Protocol Failure ....................................................................................................

11-2

 

Common Error Conditions ............................................................................................

11-5

 

Advanced ARP Troubleshooting ..................................................................................

11-6

OmniSwitch Troubleshooting Guide September 2005

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.................................................................................................Dshell Troubleshooting

11-8

 

Viewing the ARP Table on OmniSwitch 6624/6648 Switches ............................

11-10

Chapter 12

Troubleshooting IP Routing ...................................................................................

12-1

 

In This Chapter ..............................................................................................................

12-2

 

Introduction ...................................................................................................................

12-3

 

IP Routing Protocol Failure ..........................................................................................

12-3

 

Troubleshooting via the CLI .........................................................................................

12-3

 

Troubleshooting with Debug CLI ...............................................................................

12-11

 

RIP Troubleshooting ...................................................................................................

12-13

 

OSPF Troubleshooting ................................................................................................

12-19

 

BGP Troubleshooting ..................................................................................................

12-27

 

Dshell Troubleshooting Advanced IP Routing ...........................................................

12-29

 

ipdbg=x .................................................................................................................

12-29

 

ifShow ..................................................................................................................

12-29

 

iprmShowRoutes ..................................................................................................

12-30

 

iprmCountRoutes .................................................................................................

12-30

 

ipni_ifShow ..........................................................................................................

12-30

 

Iprm_routeShow ...................................................................................................

12-31

 

Ipni_routeCount ...................................................................................................

12-31

 

ospfDbgDumpEnv ................................................................................................

12-31

Chapter 13

Troubleshooting Virtual Router Redundancy Protocol (VRRP) ....................

13-1

 

In This Chapter ..............................................................................................................

13-1

 

Overview .......................................................................................................................

13-2

 

Protocol Information .....................................................................................................

13-3

 

IP Field Descriptions ..............................................................................................

13-3

 

VRRP Field Descriptions .......................................................................................

13-3

 

VRRP States ...........................................................................................................

13-3

 

OmniSwitch 7700/7800/8800 Implementation .............................................................

13-4

 

VRRP Security .......................................................................................................

13-4

 

OmniSwitch VRRP Limitations .............................................................................

13-4

 

CMM Failover ...............................................................................................................

13-5

 

OmniSwitch VRRP Troubleshooting ............................................................................

13-9

 

ARP Table ...................................................................................................................

13-10

 

Dshell Troubleshooting ...............................................................................................

13-11

Chapter 14

Troubleshooting IP Multicast Switching (IPMS) ...............................................

14-1

 

In This Chapter ..............................................................................................................

14-1

 

Troubleshooting a Device that Cannot Join an IP Multicast Stream ............................

14-2

 

Troubleshooting a Device that Drops Out of an IP Multicast Stream ..........................

14-3

 

Troubleshooting IPMS in Debug CLI ...........................................................................

14-7

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.................................................................................................Dshell Troubleshooting

14-9

Chapter 15

Troubleshooting DVMRP ........................................................................................

15-1

 

In This Chapter ..............................................................................................................

15-1

 

Introduction ...................................................................................................................

15-2

 

DVMRP Troubleshooting .............................................................................................

15-2

 

DVMRP Global and Interface Commands .............................................................

15-2

 

DVMRP Debug Commands ...................................................................................

15-4

Chapter 16

Troubleshooting PIM-SM ........................................................................................

16-1

 

In This Chapter ..............................................................................................................

16-1

 

Introduction ...................................................................................................................

16-2

 

Definition of Terms .......................................................................................................

16-2

 

Protocol Overview ........................................................................................................

16-3

 

DR Election ............................................................................................................

16-3

 

Simplified Hello Message Format ...................................................................

16-3

 

Debugging Hello Messages .............................................................................

16-4

 

Related CLI Command ....................................................................................

16-5

 

BSR Election .................................................................................................................

16-6

 

Simplified Packet Format .......................................................................................

16-7

 

Debugging BSR/Bootstrap .....................................................................................

16-7

 

Election of a New BSR ....................................................................................

16-8

 

Related CLI Command ....................................................................................

16-9

 

C-RP Advertisements ..................................................................................................

16-10

 

Simplified RP-Advertisement Packet Format ......................................................

16-10

 

Debugging C-RP-Adv ..........................................................................................

16-11

 

Related CLI Command ..................................................................................

16-12

 

RP-SET .......................................................................................................................

16-13

 

Simplified Bootstrap RP-SET Packet Taken on a 192.168.12/24 Network .........

16-14

 

Debugging RP-SET ..............................................................................................

16-16

 

On Non BSR You Should See .......................................................................

16-16

 

Related CLI Command ..................................................................................

16-17

 

Join/Prune ....................................................................................................................

16-18

 

Simplified Join Packet ..........................................................................................

16-18

 

Simplified PRUNE Packet ...................................................................................

16-20

 

Debugging JOIN/PRUNE Event ..........................................................................

16-20

 

Register .......................................................................................................................

16-21

 

Simplified REGISTER Packet Format .................................................................

16-22

 

Shared Tree .................................................................................................................

16-23

 

Related CLI Command ..................................................................................

16-24

 

Source-Based Tree ......................................................................................................

16-25

 

Related CLI Command ..................................................................................

16-26

 

Troubleshooting Examples: Limitations .....................................................................

16-27

 

Incorrect BSR ID ..................................................................................................

16-27

OmniSwitch Troubleshooting Guide September 2005

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.....................................................Multicast Group Status is Shown as Disabled

16-27

 

PIM-SM Limitations ............................................................................................

16-28

 

Upstream Neighbor/Next Hop Debug Commands ...............................................

16-28

Chapter 17

Troubleshooting Server Load Balancing ...........................................................

17-1

 

In This Chapter ..............................................................................................................

17-1

 

Introduction ...................................................................................................................

17-2

 

Server Load Balance Failure .........................................................................................

17-2

 

What is an SLB Failure? ........................................................................................

17-2

 

Description of a Complete Failure of Service ........................................................

17-2

 

Description of a Partial Failure of Service .............................................................

17-2

 

Troubleshooting Commands .........................................................................................

17-3

 

Troubleshooting a Complete Failure .............................................................................

17-4

 

Troubleshooting a Partial Failure ..................................................................................

17-5

 

The Troubleshooting Procedure ....................................................................................

17-5

Chapter 18

Troubleshooting Authenticated VLANs ..............................................................

18-1

 

In This Chapter ..............................................................................................................

18-1

 

Introduction ...................................................................................................................

18-1

 

Troubleshooting AVLAN .............................................................................................

18-2

 

DHCP Request Failure ...........................................................................................

18-2

 

Authentication Failure ............................................................................................

18-3

 

Problem Communicating Using Multiple Protocols Simultaneously ....................

18-4

 

Useful Notes on Client Issues ................................................................................

18-5

 

Troubleshooting Using Debug Systrace ........................................................................

18-5

 

Telnet Authentication and De-authentication ........................................................

18-5

 

Get the IP Address from Default VLAN .........................................................

18-5

 

Initiate the Telnet Authentication ....................................................................

18-6

 

Release/Renew IP ............................................................................................

18-7

 

De-Authenticating ...........................................................................................

18-7

 

Release/Renew to Go Back to Default VLAN ................................................

18-7

 

HTTP/S Authentication ..........................................................................................

18-8

 

Start of Authentication using https://x.x.x.253 ................................................

18-8

 

De-Authenticate using https://x.x.x.253 ..........................................................

18-9

 

AVClient ..............................................................................................................

18-10

 

AVClient Authentication Start ......................................................................

18-10

 

AVClient logout: ...........................................................................................

18-11

 

Dshell Troubleshooting ...............................................................................................

18-12

 

Authentication Dispatcher (AD) Debugging Help ...............................................

18-12

 

The Authenticated VLAN adDebugShowContext Function ................................

18-13

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Chapter 19

.........................................................................................Troubleshooting 802.1X

19-1

 

In This Chapter ..............................................................................................................

19-1

 

Troubleshooting with the CLI .......................................................................................

19-2

 

Troubleshooting Using Debug CLI ...............................................................................

19-4

 

Dshell Troubleshooting .................................................................................................

19-7

Appendix A

OS6600/OS7700/OS8800 Architecture Overview ............................................

A-1

 

In This Chapter ...............................................................................................................

A-1

 

The MAC ASIC .............................................................................................................

A-2

 

Catalina ....................................................................................................................

A-2

 

Firenze .....................................................................................................................

A-4

 

The Coronado ASIC ................................................................................................

A-5

 

Functional Description ............................................................................................

A-6

 

Coronado: The “Brain” of the System ..............................................................

A-7

 

Coronado Specifications ...................................................................................

A-7

 

Software Module Interaction ............................................................................

A-8

 

Queue Driver Interaction ................................................................................................

A-8

 

Ethernet Driver ........................................................................................................

A-8

 

Queue Dispatcher ....................................................................................................

A-8

 

NI Supervision .........................................................................................................

A-9

 

Source Learning ......................................................................................................

A-9

 

L3 Manager/IPMS ...................................................................................................

A-9

 

QoS Manager ...........................................................................................................

A-9

 

Destination MAC Learning ..............................................................................

A-9

 

L3 Pseudo CAM Learning ................................................................................

A-9

 

QoS Policy Change ...........................................................................................

A-9

 

QoS Policy Deleted ........................................................................................

A-10

 

L2 destination MAC Aged/Deleted ................................................................

A-10

 

L3 PseudoCAM Entry Aged/Deleted .............................................................

A-10

 

Request to Free Queues Sent to QoS Manager ..............................................

A-10

 

Link Goes Up/Down .......................................................................................

A-10

 

Link Aggregation .........................................................................................................

A-11

 

Coronado Tables ..........................................................................................................

A-11

 

Layer 2 Tables .......................................................................................................

A-11

 

Layer 3 Tables .......................................................................................................

A-11

 

Source Learning ...........................................................................................................

A-12

 

Hardware Routing Engine (HRE) ................................................................................

A-13

 

QoS/Policy Manager ....................................................................................................

A-15

 

Coronado Egress Logic ................................................................................................

A-15

 

The Fabric Architecture ...............................................................................................

A-16

 

Nantucket ASIC ...........................................................................................................

A-17

 

Additional Nantucket Specifications .....................................................................

A-17

 

Functional Description: ..................................................................................

A-18

 

Data Flow .......................................................................................................

A-18

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....................................................................................Calendar Manager Module

A-19

Data Port Output Module ......................................................................................

A-19

Nantucket Redundancy .........................................................................................

A-19

Roma ............................................................................................................................

A-22

Functional Description ..........................................................................................

A-23

Initialization ....................................................................................................

A-24

NI Slot Insertion .............................................................................................

A-25

Setup Calendars and Flow Control for New NI .............................................

A-25

NI Slot Extraction ...........................................................................................

A-25

CMM Takeover and Hot Swap .............................................................................

A-25

Framing Error ........................................................................................................

A-26

Chassis Management Module (CMM) .........................................................................

A-26

OS7000 CMM .......................................................................................................

A-27

OS8800 CMM .......................................................................................................

A-27

Functional Description of CMM ...........................................................................

A-28

CMM Software Startup Process .....................................................................

A-28

AOS ................................................................................................................

A-29

MiniBoot ........................................................................................................

A-30

AOS Start ........................................................................................................

A-30

Chassis Manager Component of System Services ................................................

A-30

CMM Reload of NI Module ..................................................................................

A-30

Overall System Architecture .................................................................................

A-32

Packet Walk .................................................................................................................

A-34

Packet Walk Principles ..........................................................................................

A-34

Data Flow Overview .............................................................................................

A-34

Specific Packet Flows ..................................................................................................

A-35

Unknown L2 Source, Known L2 Destination .......................................................

A-35

The Catalina ASIC .........................................................................................

A-35

The Coronado ASIC .......................................................................................

A-35

The Nantucket ASIC ......................................................................................

A-35

The Coronado ASIC .......................................................................................

A-35

The Catalina ASIC .........................................................................................

A-35

Unknown Destination ...................................................................................................

A-36

Known L2 Source, Unknown L2 Destination .......................................................

A-36

The Catalina ASIC .........................................................................................

A-36

The Coronado ASIC .......................................................................................

A-36

The Nantucket ASIC ......................................................................................

A-36

The Coronado ASIC .......................................................................................

A-37

The Catalina ASIC .........................................................................................

A-37

Traffic is Being Passed; the Switch is Attempting to Put a Correct L2 DA

 

Entry on the NI .....................................................................................................

A-37

The Coronado ASIC .......................................................................................

A-37

Unknown L3 DA ...................................................................................................

A-38

The Coronado ASIC .......................................................................................

A-38

Hardware Buses on OmniSwitch 7700/7800/8800 Switches .......................................

A-41

Xybus ....................................................................................................................

A-41

Fbus .......................................................................................................................

A-41

Bbus .......................................................................................................................

A-41

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Bus Mapping on OmniSwitch 7700/7800/8800 Switches

........................................... A-42

 

Xybus Mapping .....................................................................................................

A-42

 

Fbus Mapping ........................................................................................................

A-42

 

Falcon (OmniSwitch 7700/7800) Fbus Mapping ...........................................

A-42

 

Eagle (OmniSwitch 8800) Fbus Mapping ......................................................

A-42

 

OS6624/6648 Architecture ...........................................................................................

A-43

 

Hardware Architectural Overview ........................................................................

A-44

 

Layer 2 Forwarding ...............................................................................................

A-46

 

Address Resolution Protocol ..........................................................................

A-46

 

Address Learning ............................................................................................

A-47

 

Location of Address Tables ............................................................................

A-47

 

Address Look-up Methodology ......................................................................

A-48

 

L2 Data Structures ..........................................................................................

A-48

 

3-Protocol Entry .............................................................................................

A-49

 

Layer 3 Forwarding ...............................................................................................

A-50

 

VLANs ..................................................................................................................

A-51

 

Port Based VLANs .........................................................................................

A-51

 

Protocol Based VLANs ..................................................................................

A-51

 

Address Based VLANs ...................................................................................

A-51

 

Tag Net ID Entry ............................................................................................

A-52

 

Priority ............................................................................................................

A-52

 

802.1p Priority ................................................................................................

A-52

 

Rules-Based Priority .......................................................................................

A-53

 

QOS Flow .......................................................................................................

A-53

 

Bandwidth Management and QoS ..................................................................

A-53

 

CMM Functionality for OS6600 ..................................................................................

A-54

 

OS6600 IPC Communication .......................................................................................

A-58

 

OS6600 BOOT Sequence ............................................................................................

A-59

Appendix B

Debug Commands .....................................................................................................

B-1

Appendix C

Technical Support Commands ...............................................................................

C-1

Appendix D

Modifying Files with VI Editor ................................................................................

D-1

 

In This Chapter ...............................................................................................................

D-1

 

Useful VI Commands .....................................................................................................

D-2

 

Sample VI Session .........................................................................................................

D-3

 

Index ......................................................................................................................

Index-1

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OmniSwitch Troubleshooting Guide September 2005