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ISL trunk won't form after topology change

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Category:
metrocluster
Specialty:
MetroCluster
Last Updated:

Applies to

  • Fabric MetroCluster
  • Brocade FC switches
  • 16G ISLs
  • xWDM

Issue

After changing the ISL topology to include 2 or more 16Gb ISLs in a trunk over a DWDM, the ports are immediately disabled
 
Example:
switchshow        :
switchName:	FC_Switch_A1
switchType:	162.6
switchState:	Online   
switchMode:	Native
switchRole:	Subordinate
switchDomain:	5
switchId:	aaab00
switchWwn:	00:00:00:00:00:00:00:00
zoning:		ON (CFG_FAB_1_RCF)
switchBeacon:	OFF
FC Router:	OFF
Fabric Name:	Fabric1
HIF Mode:	OFF

Index Port Address  Media Speed   State       Proto
==================================================
  40  40   123456   id    16G	  No_Sync     FC  LS Disabled (Port State Change threshold exceeded)
  41  41   234567   id    16G     No_Sync     FC  LS Disabled (Port State Change threshold exceeded)

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