Blocking Subnet

[kzhen]

Location A:

router1 and switch 1.

Location B:

router2 and switch 2.

Between Router 1 and router 2, it is running bgp routing protocol. Under bgp statement, there is redistribute eigrp.

Between router1 and switch1, it is running eigrp routing protocol as well as router 2 and switch2.

In router 1, there is one subnet 172.16.100.0/24, we don't want it to advertise to the location B network. How can we block it and only let it advertise on switch 1?

[kzhen]

Please see the network diagram.

[Edison Ortiz · Accepted solution]

When redistributing EIGRP into BGP on router 1, you need to use a route-map and the route-map should reference an ACL that exclude 172.16.100.0/24 while allowing all other routes.

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Edison.