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can we find out whether the router is fragmenting the packet

hi all can someone pls tell me is there a way we can fidn out whether the router is fragmenting the packet or clearing the DF bit in the ip packet. any kind of debug can show that.

regards

sebastan

1 REPLY
Cisco Employee

Re: can we find out whether the router is fragmenting the packet

Sebastan,

You can configure an access-list for the source and destination and then do an IP Packet Detail Debug on the ACL.

For example:

access-list 100 permit ip host 10.1.1.1 host 10.2.2.1

deb ip packet 100 detail

Also, watch out for the CPU spike when you run debugs. Running Debug IP Packet detail without an ACL can melt down the router based upon the traffic at that time. So, it is highly recommended that you configure an ACL and be specific as possible and then run the debug against the ACL.

I hope it helps.

Regards,

Arul

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