Cisco Bug: CSCun02007 - IPEP slow data transfer rate and packet loss with traffic bursts
Jun 08, 2016
- Cisco Identity Services Engine
Known Affected Releases
Symptom: IPEP slow data transfer rate and packet loss with traffic bursts. For example: With SMB traffic,FTP traffic we have very poor file transfer rates of 10kbps.We see lots of TCP retransmissions and DUP ACK frames on both eth0/eth1 interfaces. The IPEP/IPN node suffers from packet loss if fileserver sends a burst of 5 packets before an ACK is sent back. Conditions: IPEP routed mode. While switching packets between eth0 and eth1, we seem to be losing some packets which then get either retransmitted or Fast-retransmitted following 3 Duplicate ACK's from the client that is using TCP Selective ACK to tell the server which sequences it did not receive.
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Bug Details Include
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