[c-nsp] GBIC error message, any clue? (cpd_port_enable: port 25 xcvr_enable_link: FALSE)

[Atanas Yankov]

You have problem with this port becouse of link-flaps
your port are flapping between up and down states
by default catalyst have enabled to detect errors on all ports
and detect variouse type of problems bpduguard , dtp-flaps , link-flaps 
, pagp-flaps, rootguard,
and udld . in you case you should check configuration in both end of the 
link it's like trunk configuration issue or both end can't negotiates 
for duplex or speed of course there can a other
reason for link flaps faulty line or interface hardware.

you can  disable all this checks with this  command
catalyst(conf)no errdisable detect cause all

br,
CCNP Atanas Yankov
Network Administrator
AngelSoft Ltd.

Alexander Koch wrote:

>The GBIC on this 2950 is killing me. Saying shut/ no shut
>gets it into error-disabled immediately. I had to say
>'speed nonegotiate' to bring this one up. Anyone seen these
>scary messages before?
>
>Regards,
>Alexander
>
>Nov 26 10:43:33: %LINEPROTO-5-UPDOWN: Line protocol on
>Interface GigabitEthernet0/2, changed state to up
>Nov 26 10:43:35: %LINEPROTO-5-UPDOWN: Line protocol on
>Interface GigabitEthernet0/2, changed state to down
>Nov 26 10:43:36: %PM-4-ERR_DISABLE: link-flap error detected
>on Gi0/2, putting Gi0/2 in err-disable statecpd_port_enable:
>port 25 xcvr_enable_link: FALSE
>Nov 26 10:43:44: %SYS-5-CONFIG_I: Configured from console by
>vty0 (213.200.88.76)
>Nov 26 10:43:46: %PM-4-ERR_DISABLE: link-flap error detected
>on Gi0/2, putting Gi0/2 in err-disable state
>Nov 26 10:47:03: %LINK-5-CHANGED: Interface
>GigabitEthernet0/2, changed state to administratively
>downcpd_port_enable: port 25 xcvr_enable_link: FALSE
>
>_______________________________________________
>cisco-nsp mailing list  cisco-nsp at puck.nether.net
>https://puck.nether.net/mailman/listinfo/cisco-nsp
>archive at http://puck.nether.net/pipermail/cisco-nsp/
>
>
>  
>