Chapter 11: Routing Policy Configuration Guide
170
DIGITAL GIGAswitch/Router User Reference Manual
5.
Create the Export-Policy, redistributing all static routes reachable over interface
130.1.1.1 and all (RIP, Direct) routes into RIP.
Exporting Aggregate-Routes into RIP
In the configuration shown in
Figure 17 on page 160
, 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.
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.
3.
Create the aggregate/summarized route. This command binds the aggregated route
with the contributing routes.
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 export destination ripExpDst141 source
statExpSrc130 network all
ip-router policy export destination ripExpDst141 source ripExpSrc
network all
ip-router policy export destination ripExpDst141 source directExpSrc
network all
ip-router policy create aggr-gen-dest aggrDst140 network
140.1.0.0/16
ip-router policy create aggr-gen-source allAggrSrc protocol all
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
ip-router policy create rip-export-destination ripExpDst130
interface 130.1.1.1
