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Fibre Channel (SAN)

New Contributor
Posts: 3
Registered: ‎08-28-2008

brocade 8gb switch in IBM Bladecenter, large "enc out"


We are facing some problems using the Brocade 8gb switch (5470) which is inside the IBM Bladecenter chassis.

We have a chassis with 4 of these Brocade switches configured as Access Gateway mode with the latest firmware (6.2.0c equivalent for bladecenter). Each of the 14 blades have 4 HBA ports connecting to the 4 access gateways.

We have 2 uplinks trunked using N_port trunking to Brocade DCX. The F_port to N_Port mapping is set to Auto Balancing.

We find that when we reboot a blade the "enc out", "link fail" and "link loss" counter in porterrshow increase on MANY of the internal 14 ports. The OS running on the blade reports a "loss in path" and the ports are reported as "Marginal Ports" on the switch logs.

We are trying to find out why a reboot on one blade is causing the errors on the many of the other ports?

Where do we need to look next?

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