Preview Tool

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

Last Modified

Jan 20, 2017

Products (1)

Known Affected Releases


Description (partial)


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


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.
Bug details contain sensitive information and therefore require a account to be viewed.

Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
Bug information is viewable for customers and partners who have a service contract. Registered users can view up to 200 bugs per month without a service contract.