Several Errors per day: PORT-5-IF_DOWN_LINK_FAILURE

[nunobarbosa12]

Greetings,

All my MDS are reporting issues such as Link Failure on several ports since May. Everyday, a new report is shows up and in a diferent fcport.

The troubleshooting document says that could be a physical issue, but I already checked.

Who can help me with this situation?

Kind Regards,

Nuno Barbosa

-----------------------------------------------------------------------------------LOG--------------------------------------------------------------------------------------------------------

2012 Jul 17 21:34:47 MDS-PDC-A-01 %PORT-5-IF_DOWN_LINK_FAILURE: %$VSAN 1%$ Interface fc1/26 is down (Link failure loss of sync)  "ZECA"

2012 Jul 17 21:36:55 MDS-PDC-A-01 %PORT-5-IF_UP: %$VSAN 1%$ Interface fc1/26 is up in mode F  "ZECA"

2012 Jul 17 21:57:03 MDS-PDC-A-01 %PORT-5-IF_DOWN_LINK_FAILURE: %$VSAN 1%$ Interface fc2/29 is down (Link failure loss of signal)  "ADIDAS"

2012 Jul 17 21:58:19 MDS-PDC-A-01 %PORT-5-IF_UP: %$VSAN 1%$ Interface fc2/29 is up in mode F  "ADIDAS"

2012 Jul 17 22:25:33 MDS-PDC-A-01 %PORT-5-IF_DOWN_LINK_FAILURE: %$VSAN 1%$ Interface fc5/17 is down (Link failure loss of signal)  "NIKE"

2012 Jul 17 22:26:44 MDS-PDC-A-01 %PORT-5-IF_UP: %$VSAN 1%$ Interface fc5/17 is up in mode F  "NIKE"

2012 Jul 17 22:26:49 MDS-PDC-A-01 %PORT-5-IF_DOWN_LINK_FAILURE: %$VSAN 1%$ Interface fc5/14 is down (Link failure loss of signal)  "PUMA"

2012 Jul 17 22:28:09 MDS-PDC-A-01 %PORT-5-IF_UP: %$VSAN 1%$ Interface fc5/14 is up in mode F  "PUMA"

2012 Jul 17 22:33:54 MDS-PDC-A-01 %PORT-5-IF_DOWN_LINK_FAILURE: %$VSAN 1%$ Interface fc10/6 is down (Link failure loss of sync)  "LACATONI"

2012 Jul 17 22:34:52 MDS-PDC-A-01 %PORT-5-IF_UP: %$VSAN 1%$ Interface fc10/6 is up in mode F  "LACATONI"

2012 Jul 19 10:17:30 MDS-PDC-A-01 %PORT-5-IF_DOWN_LINK_FAILURE: %$VSAN 1%$ Interface fc5/10 is down (Link failure loss of signal)  "AIRNESS"

2012 Jul 19 10:26:03 MDS-PDC-A-01 %PORT-5-IF_UP: %$VSAN 1%$ Interface fc5/10 is up in mode F  "AIRNESS"

2012 Jul 20 15:44:37 MDS-PDC-A-01 %PORT-5-IF_DOWN_LINK_FAILURE: %$VSAN 1%$ Interface fc5/10 is down (Link failure loss of signal)  "AIRNESS"

2012 Jul 20 16:21:06 MDS-PDC-A-01 %PORT-5-IF_UP: %$VSAN 1%$ Interface fc5/10 is up in mode F  "AIRNESS"

2012 Jul 23 06:06:26 MDS-PDC-A-01 %PORT-5-IF_DOWN_LINK_FAILURE: %$VSAN 1%$ Interface fc10/5 is down (Link failure loss of signal)  "HUMMEL"

2012 Jul 23 06:09:16 MDS-PDC-A-01 %PORT-5-IF_UP: %$VSAN 1%$ Interface fc10/5 is up in mode F  "HUMMEL"

[Brian Morrissey · Accepted solution]

Hi Nuno,

What kind of devices are attached to these interfaces?  Could be those devices are being rebooted for maintenance etc and drop connectivity to the san..

[nunobarbosa12]

Hello Brian,

Thank you for your prompt reply.

This is a production cisco MDS 9513 and it is attached with servers, storage and has 2 ISL ports for a MDS C-Class on a HP BladeCenter C7000 Enclosure.

I noticed that these 2 ISL ports (2 each Fabric), has the following configuration:

MDS-PDC-A-01# sh interface fc1/22

fc1/22 is up

    Port description is "APRICOT ISL"

    Hardware is Fibre Channel, SFP is short wave laser w/o OFC (SN)

    Port WWN is 20:16:54:7f:ee:0c:ff:00

    Peer port WWN is 20:0a:00:05:73:b0:1d:00

    Admin port mode is E, trunk mode is off

    snmp link state traps are enabled

    Port mode is E

    Port vsan is 1

    Speed is 4 Gbps

    Rate mode is dedicated

    Transmit B2B Credit is 16

    Receive B2B Credit is 250

    B2B State Change Number is 14

    Receive data field Size is 2112

    Beacon is turned off

    5 minutes input rate 34634640 bits/sec, 4329330 bytes/sec, 2795 frames/sec

    5 minutes output rate 21801240 bits/sec, 2725155 bytes/sec, 2136 frames/sec

      25993853586 frames input, 49791309768576 bytes

        0 discards, 0 errors

        0 CRC,  0 unknown class

        0 too long, 0 too short

      20875538315 frames output, 37636600208268 bytes

        0 discards, 0 errors

      0 input OLS, 0 LRR, 0 NOS, 0 loop inits

      0 output OLS, 0 LRR, 0 NOS, 0 loop inits

      250 receive B2B credit remaining

      16 transmit B2B credit remaining

      14 low priority transmit B2B credit remaining

    Interface last changed at Fri Feb 10 10:45:50 2012

MDS-PDC-A-01# sh interface fc1/25

fc1/25 is up

    Port description is "APRICOT ISL"

    Hardware is Fibre Channel, SFP is short wave laser w/o OFC (SN)

    Port WWN is 20:19:54:7f:ee:0c:ff:00

    Peer port WWN is 20:0e:00:05:73:b0:1d:00

    Admin port mode is E, trunk mode is off

    snmp link state traps are enabled

    Port mode is E

    Port vsan is 1

    Speed is 4 Gbps

    Rate mode is dedicated

    Transmit B2B Credit is 16

    Receive B2B Credit is 250

    B2B State Change Number is 14

    Receive data field Size is 2112

    Beacon is turned off

    5 minutes input rate 33142624 bits/sec, 4142828 bytes/sec, 2681 frames/sec

    5 minutes output rate 21496712 bits/sec, 2687089 bytes/sec, 2081 frames/sec

      25991642560 frames input, 49789094273784 bytes

        0 discards, 0 errors

        0 CRC,  0 unknown class

        0 too long, 0 too short

      20877265630 frames output, 37637676357644 bytes

        0 discards, 0 errors

      0 input OLS, 0 LRR, 0 NOS, 0 loop inits

      0 output OLS, 0 LRR, 0 NOS, 0 loop inits

      250 receive B2B credit remaining

      16 transmit B2B credit remaining

      14 low priority transmit B2B credit remaining

    Interface last changed at Fri Feb 10 10:47:04 2012

[robertoharamita]

Nuno,

I'm having the same problem, did you solved your?

Thanks in advance,

Roberto