EIGRP Notes – Route Filtering

As always, correction are encouraged.

You can configure an EIGRP router to filter routes from being advertised or from being accepted.

Objective:  Filter out the route to 10.0.254.1/32 from being advertised to the rest of the network via EIGRP.

ip prefix-list PRE1 deny 10.0.254.1/32 ip prefix-list PRE1 permit 0.0.0.0/0 le 32 ! router eigrp 1 distribute-list prefix PRE1 out -- OR -- ip access-list standard ACL1 deny 10.0.254.1 0.0.0.255 permit any ! router eigrp 1 distribute-list ACL1 out

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ip prefix-list PRE1 deny 10.0.254.1/32 ip prefix-list PRE1 permit 0.0.0.0/0 le 32 ! router eigrp 1 distribute-list prefix PRE1 out   -- OR --   ip access-list standard ACL1 deny 10.0.254.1 0.0.0.255 permit any ! router eigrp 1 distribute-list ACL1 out

Aaron Conaway

I shake my head around sometimes and see what falls out. That's what lands on these pages. If you have any questions, the best way to contact me is through Twitter at @aconaway.

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