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Cisco Bug: CSCuq45240 - FCIP TCP silent discards when running ip compression and jumbo frames

Last Modified

Sep 10, 2019

Products (1)

  • Cisco MDS 9000 Series Multilayer Switches

Known Affected Releases


Description (partial)

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.

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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