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Cisco Bug: CSCtb44150 - Catalyst Switches shows CDP duplex mismatch error if connected to CUMA

Last Modified

Mar 13, 2018

Products (1)

  • Cisco Unified Mobile Communicator

Known Affected Releases


Description (partial)


The primary Catalyst shows duplex mismatches on the Gigabit Port, where the CUMA Server is connected. CUMA Server an Catalyst Switch are configured with auto / auto for speed and duplex. IOS on Catalyst is 12.2.40 SE.


CUMA Server is connected in failover mode to 2 x Catalyst 3750.
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