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Interface vfc, vsan is going down

Unanswered Question
Apr 25th, 2012
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Hello,


I have some logs in Nexus 5k that I didn't found in anywhere and would like to know what this means


2012 Apr  1 02:16:40 TJERJ481 %PORT-5-IF_TRUNK_DOWN: %$VSAN 2001%$ Interface vfc40, vsan 2001 is down (waiting for flogi)

2012 Apr  1 02:17:11 TJERJ481 %PORT-5-IF_TRUNK_DOWN: %$VSAN 2001%$ Interface vfc40, vsan 2001 is down (Initializing)

2012 Apr  1 02:17:11 TJERJ481 %PORT-5-IF_TRUNK_UP: %$VSAN 2001%$ Interface vfc40, vsan 2001 is up

2012 Apr 10 13:03:29 TJERJ481 %PORT-5-IF_TRUNK_DOWN: %$VSAN 2001%$ Interface vfc39, vsan 2001 is down (waiting for flogi)

2012 Apr 10 13:03:59 TJERJ481 %PORT-5-IF_TRUNK_DOWN: %$VSAN 2001%$ Interface vfc39, vsan 2001 is down (Initializing)

2012 Apr 10 13:03:59 TJERJ481 %PORT-5-IF_TRUNK_UP: %$VSAN 2001%$ Interface vfc39, vsan 2001 is up

2012 Apr 18 13:24:27 TJERJ481 %PORT-5-IF_TRUNK_DOWN: %$VSAN 2001%$ Interface vfc40, vsan 2001 is down (waiting for flogi)

2012 Apr 18 13:24:57 TJERJ481 %PORT-5-IF_TRUNK_DOWN: %$VSAN 2001%$ Interface vfc40, vsan 2001 is down (Initializing)

2012 Apr 18 13:24:57 TJERJ481 %PORT-5-IF_TRUNK_UP: %$VSAN 2001%$ Interface vfc40, vsan 2001 is up

2012 Apr 20 18:58:50 TJERJ481 %PORT-5-IF_TRUNK_DOWN: %$VSAN 2001%$ Interface vfc35, vsan 2001 is down (waiting for flogi)

2012 Apr 20 18:59:20 TJERJ481 %PORT-5-IF_TRUNK_DOWN: %$VSAN 2001%$ Interface vfc35, vsan 2001 is down (Initializing)

2012 Apr 20 18:59:20 TJERJ481 %PORT-5-IF_TRUNK_UP: %$VSAN 2001%$ Interface vfc35, vsan 2001 is up



As we can see, the dates and interfaces are random when it goin down. Apparently I don't have any problem with access my storage when this logs occurs.



Below the configurations about these interfaces :


interface vfc35

  bind interface Ethernet1/35

  no shutdown

!

interface vfc39

  bind interface Ethernet1/39

  no shutdown

!

interface vfc40

  bind interface Ethernet1/40

  no shutdown

!

interface Ethernet1/35

  switchport mode trunk

  switchport trunk allowed vlan 2001

  duplex full

!

interface Ethernet1/39

  switchport mode trunk

  switchport trunk allowed vlan 2001

  spanning-tree port type edge trunk

!

interface Ethernet1/40

  switchport mode trunk

  switchport trunk allowed vlan 2001

  spanning-tree port type edge trunk

  duplex full

!

sh vsan 2001

vsan 2001 information

         name:VSAN2001  state:active

         interoperability mode:default

         loadbalancing:src-id/dst-id/oxid

         operational state:up

!




Someone can help me?!


Regards,



Fábio Henrique Teixeira

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Prashanth Krishnappa Wed, 04/25/2012 - 09:32
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  • Cisco Employee,

What kind of CNAs do you have? The message  means the switch is waiting for FLOGI. Most common reason for a vFC to flap is missing FIP Keep-alive causing the interface to go down and then waiting for FLOGI.


But you can collect following outputs to see if there is anything pointing to the problem


show platform software fcoe_mgr info interface vfc x

show platform software fcoe_mgr event-history errors

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