Migrating UCS SAN port channel to a new MDS - running into problems

[mathew.goddard]

Equipment: UCS with 2 x 6248UP fabric interconnects, running version 4.2(1f).

Problem: On FI A, SAN port channel 101 (fc1/29-32) connects to SAN port channel 102 (fc1/37-40) on a N5K-C5596UP switch. I'm attempting to move those four connections to SAN port channel 11 (fc1/1-4) on a new MDS 9124V switch. However, I think I did this in the wrong way — i.e. simply moving fibers one at a time, from the old switch to the new — because that caused the FI ports to go into an "error-disabled" state. Unfortunately, doing a shut/noshut on those ports did not fix things. I was unable to get it to work, so I reverted everything back to the 5K switch. Once the connections were back in place, a shut/noshut on the ports brought the port channel back up.

Request: Could anyone describe the correct process to do this kind of migration? Also, does anyone have any advice for resolving the above "error-disabled" state?

Info:

• FI port channel config:
  • interface san-port-channel 101
    channel mode active
    switchport mode NP
    switchport speed 8000
• FI port config:
  • interface fc1/29
    switchport speed 8000
    switchport mode NP
    channel-group 101 force
    no shutdown
• 5K switch port channel config:
  • interface san-port-channel 102
    channel mode active
    switchport mode F
    switchport trunk mode off
• 5K switch port config:
  • interface fc1/37
    switchport mode F
    switchport trunk mode off
    channel-group 102 force
    no shutdown
• MDS switch port channel config:
  • interface port-channel11
    switchport mode F
    switchport speed 8000
    switchport rate-mode dedicated
    switchport trunk mode off
• MDS switch port config:
  • interface fc1/1
    switchport speed 8000
    switchport mode F
    switchport trunk mode off
    port-license acquire
    channel-group 11 force
    no shutdown

[marce1000]

    - Check logs on the MDS when ports get disabled ,

  M.

[mathew.goddard]

I see this in the MDS log, but only one time, for one port:

%PORT-5-IF_DOWN_LINK_FAILURE: %$VSAN 100%$ Interface fc1/1 is down (Link failure loss of signal)

I see a lot of these:

%PORT-5-IF_DOWN_OLS_RCVD: %$VSAN 100%$ Interface fc1/1 is down (OLS received)

Otherwise nothing jumps out. The log level is set to "Notifications", though, so maybe that's why?

Also, I've since discovered that the log level on the FI side is set to "Critical", so that's not helpful at all, obviously.