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Cisco Bug: CSCtb04248 - DCBX does not converge with fcoe cos of 7

Last Modified

Jan 20, 2017

Products (1)

Known Affected Releases

4.1(2)E1(1)

Description (partial)

Symptom:

Qlogic CNA is unable to Bring up the FCoE Link via FIP with Nexus4000 when FCoE CoS is changed to a non-default value.

Conditions:

The default CoS for FCoE traffic is CoS=3. This problem occurs when CoS=3 is configured as a "drop" CoS in QoS configuration, instead of "pause no-drop". This change in the configuration causes the DCBXP protocol not to converge between the CNA and Nexus4000 switch as a result FIP/FCoE cannot start.
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