Cabletron Systems 9032578-05 manual Exporting Aggregate-Routes into RIP

Chapter 13: Routing Policy Configuration Guide

Exporting Aggregate-Routes into RIP

In the configuration shown in Figure 18 on page 181, suppose you decide to run RIP Version 1 on network 130.1.0.0/16, connecting routers R1 and R3. Router R1 desires to announce the 140.1.1.0/24 and 140.1.2.0/24 networks to router R3. RIP Version 1 does not carry any information about subnet masks in its packets. Thus it would not be possible to announce the subnets (140.1.1.0/24 and 140.1.2.0/24) into RIP Version 1 without aggregating them.

1.Create an Aggregate-Destination which represents the aggregate/summarized route.

ip-router policy create aggr-gen-dest aggrDst140 network 140.1.0.0/16

2.Create an Aggregate-Source which qualifies the source of the routes contributing to the aggregate. Since in this case, we do not care about the source of the contributing routes, we would specify the protocol as all.

ip-router policy create aggr-gen-source allAggrSrc protocol all

3.Create the aggregate/summarized route. This command binds the aggregated route with the contributing routes.

ip-router aggr-gen destination aggrDst140 source allAggrSrc network 140.1.1.0/24

ip-router aggr-gen destination aggrDst140 source allAggrSrc network 140.1.2.0/24

4.Create a RIP export destination for interface with address 130.1.1.1, since we intend to change the rip export policy only for interface 130.1.1.1.

ip-router policy create rip-export-destination ripExpDst130 interface 130.1.1.1

5.Create a Aggregate export source since we would to export/redistribute an aggregate/summarized route.

ip-router policy create aggr-export-source aggrExpSrc

6.Create a RIP export source since we would like to export RIP routes.

ip-router policy create rip-export-source ripExpSrc

7.Create a Direct export source since we would like to export Direct routes.

ip-router policy create direct-export-source directExpSrc

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