Cisco Bug: CSCuq45240 - FCIP TCP silent discards when running ip compression and jumbo frames
Sep 06, 2016
- Cisco MDS 9000 Series Multilayer Switches
Known Affected Releases
Symptom: FCIP TCP silently discards inbound frames when running ip compression and jumbo frames. These discards lead to TCP retransmissions and FCIP tunnel failures due to retransmit failures. A new counter needs to be added to properly count these so they can be recognized. Conditions: Occurs on the GigabitEthernet ports on the following two modules only: - 16x1GE, Storage Services Node DS-X9316-SSNK9 - 4x1GE IPS, 18x1/2/4Gbps FC Module DS-X9304-18K9 Occurs when running FCIP with ip compression (any mode) and the MTU configured on the GigabitEthernet ports is greater than 2500.
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Bug Details Include
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