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Cisco Bug: CSCul99837 - ISE tcpdump automatically reassembles fragmented IP packets

Last Modified

Jul 19, 2016

Products (1)

  • Cisco Identity Services Engine

Known Affected Releases

1.2(0.899)

Description (partial) 

Symptom:
It seems ISE is automatically configured for TCP offloading which means the NIC automatically reassembles IP packets.

This translates into the fact that if you take a TCPdump on ISE, you will see IP packet with length of 3000-4000, i.e. way above the MTU.

Conditions:
Taking TCPdump on ISE 1.2
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