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FC-LAG between brocade and Cisco UCS switch is no longer functioning post UCS upgrade to 4.3

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Category:
fabric-interconnect-and-management-switches
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brocade
Last Updated:

Applies to

  • Brocade switch
  • Cisco UCS switch firmware 4.3

Issue

  • FC-LAG configuration was working fine between Brocade switches and Cisco UCS switch until UCS firmware 4.2.
  • Post upgrading UCS firmware to 4.3 FC-LAG stopped working.
  • Roll backing the UCS firmware to 4.2, FC-LAG appears to work properly.
  • Brocade was able to copy the PWWN field from FLOGI packet into the FLOGI-ACC packet which was presenting itself as Cisco switch connecting to another Cisco switch.

 

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