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New Member

how to use ACL to limit eigrp and ospf traffic?

hi:

i know OSPF ,EIGRP and RIP are both network layer protocols .

and RIP uses UDP at port 520

EIGRP uses RTP and  protocol number is 88

OSPF 's protocol number 89

both EIGRP and RTP are encapsulated into a IP packet 。

alright, if i want to use ACL to limit EIGRP or OSPF update information what port number shall i use ?

in RIP case i can put " access-list  1 deny udp any any eq 520"  but how to do it with EIGRP and OSPF ??

anyone?

thanks in advance

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2 REPLIES
New Member

how to use ACL to limit eigrp and ospf traffic?

Hi

you can use passive-interface command to limit routing protocol updates.

Please try that.

Hope that helps

Vipin

Thanks and Regards, Vipin
New Member

how to use ACL to limit eigrp and ospf traffic?

Hi Dannan,

Not sure if I get this right..

Are you want to block the ospf packet or the routes ?

If packet then "deny ospf any any" same with eigrp "deny eigrp any any"

if the routes you can use distribute-list.

HTH,

Vikram

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