RIPv2 Route Filtering

To provide directions on where to route traffic, Cisco routers share routing table update information. You can use ACLs to limit which routes a router accepts or advertises to its counterparts. Figure shows a sample topology using RIPv2. Example shows the syntax necessary to provide RIPv2 filtering with an ACL.

Here a standard IP ACL is applied to RIP. Access list 12 is used to prevent R1 from advertising any routes of the 12.2.2.0 DMZ network out of interface e0/0.


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