07-21-2010 05:14 AM - edited 03-04-2019 09:08 AM
Hi,
Is there a way to catch packet size of a packet coming into an interface using an ACL. I don't need the exact packet size etc, but packet above a certain MTU size may be blocked etc. so that i can see the counter increment.
Victor.
07-21-2010 06:09 AM
Victor,
Dont think there is an option with ACL for packet length matching.
But you may match Values in IP Packet using ACL's
You may use route-maps to accomplish the same.
R1(config)#route-map new permit 10
07-21-2010 06:16 AM
Does a route map work for Multicast traffic? thats what i need.
Victor.
07-21-2010 06:36 AM
Victor,
You may match the destination group using ACL and tie the ACL and the length of the packet under the route-map with logical "and".
That should do the job !
07-21-2010 10:28 PM
Hmm, that sounds like it but i dont think Route Maps work on Multicast groups. I am not exactly sure but remember reading that somewhere. I can just test this on my production device hence need to try and set this up in my lab and see how it works.
Let me know if you find something meanwhile.
Thanks.
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