Avaya ATM DXI User Manual
Configuring ATM DXI
Services
Router Software Version 11.0
Site Manager Software Version 5.0
Part No. 114057 Rev. A
August 1996
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(continued)
iv 114057 Rev. A
Contents
Configuring ATM DXI Services
About This Guide
Before You Begin .............................................................................................................xiii
Conventions .................................................................................................................... xiv
Acronyms ......................................................................................................................... xv
Ordering Bay Networks Publications ..............................................................................xvi
Technical Support and Online Services
Bay Networks Customer Service ...................................................................................xviii
Bay Networks Information Services ................................................................................ xix
World Wide Web ...................................................................................................... xix
Customer Service FTP ............................................................................................. xix
Support Source CD ................................................................................................... xx
CompuServe .............................................................................................................xx
InfoFACTS ................................................................................................................ xxi
How to Get Help ....................................................................................................... xxi
Chapter 1
Starting ATM DXI
Before You Begin ............................................................................................................1-1
Adding ATM DXI to the Router .......................................................................................1-2
Creating an ATM DXI Circuit ....................................................................................1-2
Enabling Protocols on an ATM DXI Circuit ...............................................................1-2
Adding PVCs to an ATM DXI Circuit ........................................................................1-3
Deleting ATM DXI from the Router .................................................................................1-4
Where to Go Next ...........................................................................................................1-5
Chapter 2
Understanding ATM DXI Concepts
ATM DXI versus ATM ......................................................................................................2-1
114057 Rev. A v
ATM DXI Support ............................................................................................................2-2
Multiprotocol Encapsulation .....................................................................................2-3
AAL Sublayer Support ..............................................................................................2-3
ATM DXI Error Checking ..........................................................................................2-4
ATM DXI LMI Support ..............................................................................................2-5
Simulated Multicast Packet Support .........................................................................2-5
ARP and Inverse ARP Support ................................................................................2-6
ATM DXI Implementation Notes .....................................................................................2-6
Configuring Synchronous Lines for ATM DXI ...........................................................2-6
ATM DXI Modes of Operation ..................................................................................2-7
Mode 1A ............................................................................................................2-7
Mode 1B ............................................................................................................2-7
Mode 2 ...............................................................................................................2-7
Mode 2 Proprietary ............................................................................................2-7
Access Modes for ATM DXI Services .......................................................................2-9
Group Access Mode ..........................................................................................2-9
Direct Access Mode .........................................................................................2-10
Hybrid Access Mode ........................................................................................2-11
Using Hybrid Access for Transparent Bridging .......................................................2-12
Using Hybrid Access for Routing ...........................................................................2-13
ATM DXI and Multipath Support .............................................................................2-13
ATM Layers ...................................................................................................................2-15
AAL 3/4 ..................................................................................................................2-16
AAL 5 .....................................................................................................................2-17
Data Transmission ........................................................................................................2-18
For More Information ....................................................................................................2-19
Where to Go Next .........................................................................................................2-20
Chapter 3
ATM DXI Window Basics
Adding or Copying PVCs ................................................................................................3-1
Setting PVCs for Multipath Mode ....................................................................................3-1
Managing Protocols ........................................................................................................3-3
Where to Go Next ...........................................................................................................3-4
vi 114057 Rev. A
Chapter 4
Customizing an ATM DXI Interface
Enabling or Disabling the Interface .................................................................................4-1
Entering an Interface Description ...................................................................................4-1
Changing the DXI Mode .................................................................................................4-2
Assigning a Maximum Number of Virtual Circuits ..........................................................4-2
Assigning Data Encapsulation ........................................................................................4-3
Selecting a Multiprotocol Encapsulation Method .....................................................4-3
Selecting a CS PDU Encapsulation Method ............................................................4-4
Enabling or Disabling the Multicast Function ..................................................................4-4
Enabling or Disabling LMI ...............................................................................................4-5
Where to Go Next ...........................................................................................................4-5
Chapter 5
Customizing ATM DXI PVCs
Setting a VPI/VCI Pair ....................................................................................................5-1
Setting a VPI Number ..............................................................................................5-2
Setting a VCI Number ..............................................................................................5-2
Enabling or Disabling a PVC ..........................................................................................5-2
Changing the PVC Access Mode ...................................................................................5-3
Assigning Data Encapsulation ........................................................................................5-3
Selecting a Multiprotocol Encapsulation ..................................................................5-4
Selecting a CS PDU Encapsulation .........................................................................5-4
Enabling or Disabling the Multicast Function ..................................................................5-5
Where to Go Next ...........................................................................................................5-5
Appendix A
Site Manager Parameter Descriptions
Virtual Path and Virtual Circuit Parameters ................................................................... A-1
Interface Parameters ..................................................................................................... A-2
PVC Parameters ............................................................................................................ A-5
Where to Go Next ..........................................................................................................A-8
Appendix B
Site Manager Default Settings
Where to Go Next ..........................................................................................................B-2
Index
114057 Rev. A vii
viii 114057 Rev. A
Figures
Figure 2-1. How ATM DXI Works ................................................................................2-2
Figure 2-2. AAL Layer Division between Bridge/Router and DSU/CSU .....................2-4
Figure 2-3. DXI Modes of Operation ..........................................................................2-8
Figure 2-4. Group Access Mode ................................................................................2-9
Figure 2-5. Direct Access Mode ...............................................................................2-10
Figure 2-6. Hybrid Access Mode ..............................................................................2-11
Figure 2-7. Example of a Bridged Network ..............................................................2-13
Figure 2-8. Multipath Network ..................................................................................2-14
Figure 2-9. B-ISDN ATM Protocol Reference Model ................................................2-15
Figure 2-10. ATM Adaptation Layer 3/4 ......................................................................2-16
Figure 2-11. ATM Adaptation Layer 5 .........................................................................2-17
Figure 2-12. ATM Transmission Components ............................................................2-19
114057 Rev. A ix
Tables
Table 3-1. Locating a Protocol Menu ........................................................................3-3
Table B-1. ATM DXI Interface List Window ...............................................................B-1
Table B-2. ATM DXI Virtual Circuit Window .............................................................. B-1
Table B-3. ATM DXI PVC List Window .....................................................................B-2
114057 Rev. A xi
About This Guide
This guide offers
• Instructions for starting a default Asynchronous Transfer Mode (ATM) Data
Exchange Interface (DXI) configuration on a synchronous interface
Chapter 1)
(
• A general overview of ATM DXI technology and a list of additional resources
that describe this technology (
Chapter 2)
• Specific features of ATM DXI and how we implement them (
• Instructions on how to customize an ATM DXI interface (
• Instructions on how to customize ATM DXI PVCs (
• Descriptions of ATM DXI parameters and how you edit them (
• A list of parameter default settings for ATM DXI and ATM (
Before You Begin
Before using this guide, you must complete the following procedures. For a new
router:
• Install the router (refer to the installation manual that came with your router).
• Connect the router to the network and create a pilot configuration file (refer to
Quick-Starting Routers, Connecting AN and ANH Systems to a Network, or
Connecting ASN Routers to a Network).
Make sure that you are running the latest version of Bay Networks Site Manager
and router software. For instructions, refer to Upgrading Routers from Version
7–8.00 to Version 11.0.
Chapter 3)
Chapter 4)
Chapter 5)
Appendix A)
Appendix B)
114057 Rev. A xiii
Configuring ATM DXI Services
Conventions
angle brackets (< >) Indicate that you choose the text to enter based on the
bold text Indicates text that you need to enter, command names,
brackets ([ ]) Indicate optional elements. You can choose none, one,
ellipsis points Horizontal (. . .) and vertical ellipsis points indicate
description inside the brackets. Do not type the
brackets when entering the command.
Example: if command syntax is
you enter
ping 192.32.10.12
<ip_address>
,
ping
and buttons in menu paths.
Example: Enter
wfsm &
Example: Use the dinfo command.
Example: ATM DXI > Interfaces > PVCs identifies the
PVCs button in the window that appears when you
select the Interfaces option from the ATM DXI menu.
or all of the options.
.
.
)
(
.
omitted information.
italic text Indicates variable values in command syntax
descriptions, new terms, file and directory names, and
book titles.
quotation marks (“ ”) Indicate the title of a chapter or section within a book.
screen text Indicates data that appears on the screen.
Example:
Set Bay Networks Trap Monitor Filters
separator ( > ) Separates menu and option names in instructions and
internal pin-to-pin wire connections.
Example: Protocols > AppleTalk identifies the
AppleTalk option in the Protocols menu.
Example: Pin 7 > 19 > 20
vertical line (|) Indicates that you enter only one of the parts of the
command. The vertical line separates choices. Do not
type the vertical line when entering the command.
Example: If the command syntax is
show at routes | nets, you enter either
show at routes or show at nets, but not both.
xiv 114057 Rev. A
Acronyms
About This Guide
AAL ATM adaptation layer
ALC Adaptation Layer Controller
ARP Address Resolution Protocol
ATM Asynchronous Transfer Mode
B-ISDN Broadband Integrated Services Digital Network
CPCS common part convergence sublayer
CS convergence sublayer
CSU channel service unit
DCE data communications equipment
DSU data service unit
DTE data terminal equipment
DXI Data Exchange Interface
FRE Fast Routing Engine
ILI Intelligent Link Interface
ILMI Interim Local Management Interface
IP Internet Protocol
ITU-T International Telecommunications Union –
Telecommunication Standardization Sector
LMI Local Management Interface
MAC media access control
OSI Open Systems Interconnection
OSPF Open Shortest Path First
PDU protocol data unit
PVC permanent virtual circuit
SAP service access point
SAR segmentation and reassembly
SDU service data unit
SMDS switched multimegabit data service
SNAP Subnetwork Access Protocol
SNMP Simple Network Management Protocol
VC virtual circuit
VCC virtual channel connection
114057 Rev. A xv
Configuring ATM DXI Services
VCI virtual channel identifier
VPC virtual path connection
VPI virtual path identifier
WAN wide area network
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™
at the following
xvi 114057 Rev. A
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114057 Rev. A xvii
Configuring ATM DXI Services
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xviii 114057 Rev. A
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Technical Support and Online Services
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114057 Rev. A xix
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Configuring ATM DXI Services
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xx 114057 Rev. A
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Technical Support and Online Services
114057 Rev. A xxi
This chapter describes how to set up a synchronous interface to run the default
ATM DXI configuration.
Before You Begin
Before you can start ATM DXI on your router, you must
1. Open a configuration file.
2. Specify router hardware (if using a local mode configuration file).
3. Select the link or net module interface on which you are enabling ATM DXI.
Chapter 1
Starting ATM DXI
If you have questions about how to perform any of these preliminary tasks, refer
to Configuring Routers.
The Technician Interface allows you to modify parameters by issuing
commit commands with the MIB object ID. This process is equivalent to
modifying parameters using Site Manager.
For more information about using the Technician Interface to access the MIB,
refer to Using Technician Interface Software.
Caution: The Technician Interface does not validate parameter entries.
Entering an invalid value can corrupt your configuration.
114057 Rev. A 1-1
set and
Configuring ATM DXI Services
Adding ATM DXI to the Router
Adding ATM DXI on a router requires
1.
Creating an ATM DXI Circuit
2.
Enabling Protocols on an ATM DXI Circuit
3.
Adding PVCs to an ATM DXI Circuit
T o edit the ATM DXI Interface parameters, which define the A TM interf ace to the
physical line, refer to Chapter 4.
Creating an ATM DXI Circuit
To create an ATM DXI circuit on an interface:
1. Select ATM DXI from the WAN Protocols window.
Note: The WAN Protocols window opens after you select a link or net module
connector that requires a WAN protocol.
2. Click on OK.
Site Manager creates the global framework for an ATM DXI circuit.
Enabling Protocols on an ATM DXI Circuit
To enable protocols on the ATM DXI circuit:
1. Select the protocols you want to enable on this circuit from the Select
Protocols window.
2. Click on OK.
For each protocol you select, the Configuration Manager displays a
protocol-specific window prompting you for required information. If you
need assistance in responding to any queries, consult the appropriate
configuration guide.
When you finish configuring the protocols, Site Manager displays the
Configuration Manager window.
1-2 114057 Rev. A
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