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ISL ports down over DWDM after switch firmware upgrade

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Category:
metrocluster
Specialty:
brocade
Last Updated:

Applies to

  • Metrocluster FC
  • Brocade switches
  • ADVA DWDM

Issue

  • After performing switch firmware upgrade, the ISL ports on both switches do not come back up

Index Port Address  Media Speed   State       Proto
==================================================
  20  20   071400   id    16G  No_Light    FC  LS 
  21  21   071500   id    16G  No_Light    FC  LS 

  • Bouncing the ports does not bring the link up
  • Eventually the link does restore, but this can take an extended amount of time (10+ minutes)

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