AIS user manual AI2524 Router Card User’s Manual Addressing Examples, Routing Table Example

AI2524 Router Card User’s Manual

Addressing Examples

Examples of OSI network and GOSIP NSAP addresses using the ISO

IGRP implementation are described in the next sections.

The OSI network NSAP address format is illustrated as:

DomainArea System ID S 47.0004.004D.0003.0000.0C00.62E6.00

This is an example of the GOSIP NSAP address structure. This struc- ture is mandatory for addresses allocated from the International Code Designator (ICD) 0005 addressing domain. Refer to the GOSIP docu- ment, U.S. Government Open Systems Interconnection Profile (GO- SIP), Draft Version 2.0, April 1989, for more information.

Domain AreaSystem ID S 47.0005.80.ffff00.0000.ffff.0004.0000.0c00.62e6.00

AFI IDI DFI AAI Resv RD

Routing Table Example

You enter static routes by specifying NSAP prefix and next-hop NET pairs (by using the clns route command). The NSAP prefix can be any portion of the NSAP address. NETs are similar in function to NSAP addresses.

If an incoming packet has a destination NSAP address that does not match any existing NSAP addresses in the routing table, the Cisco IOS software will try to match the NSAP address with an NSAP prefix to route the packet. In the routing table, the best match means the longest NSAP prefix entry that matches the beginning of the destination NSAP address.

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