04-24-2003 11:41 AM - edited 03-02-2019 06:54 AM
Can someone explain this ?
My IOS version is 12.1<11>EA1 Release (fc1)....
This I guess could solve my problem of link being shutdown by uneffective UDLD - STP configuration...
Many Thanks
MaX
04-24-2003 06:05 PM
Your question is not very clear. Can you re post your question
04-24-2003 10:46 PM
Yes sorry:
I have 2 CISCO 3550 - 10 2950 (doble star). Linked by 100FX.
It happens (at random) at some links are lost.
A port on the 3550 change to "ErrDisable" state.
Doing a no shutdown on the interface brings the link back up and running.
I saw that on Cisco.com:
"When a secure port is in the error-disabled state, you can bring it out of this state by entering the errdisable recovery cause psecure-violation global configuration command, or you can manually re-enable it by entering the shutdown and no shutdown interface configuration commands."
And I was wondering if the errdisable recovery cause will put back automatically my port in UP state ? And I would like to understand too why it becomes in this ErrDisable state ?
(STP is running, UDLD agressive mode too)
Can it be misconfiguration of trunk ports ?
Many Thanks
04-25-2003 12:09 AM
Hello,
in general, ErrDisable can due to :
1) Loop
2) Defective Hardware
3) Bug
4) Others?
I recently meet twice times at the customer ErrDisable:
- one time it was bug
- another time it was loop + defectives hardware
I interpret it ErrDisable like a disfunction on the network and
I think it's not good idea to use recovery function.
I think you can do that :
1) Upgrade all your network with the last IOS.
2) Verify if there is no bug associated.
3) Verify your topology network / topology change / last change.
4) If the probleme persist, try to not use UDLD on your network and
reverify
4) Verify your Hardware :
- switches
- fiber (!)
- gbic
- tranceivers if you use it
- connectivities
Good luck.
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