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loop Guard /UDLD

Posted on 2016-08-26
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Last Modified: 2016-09-02
I need to verify if this is Correct:
 If L2 link (Trunk) exists between 2 switches. Loopguard /UDLP should be configured on every port on both  switches including on the ports linking the  switches (Trunk ports)

Thank you
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Question by:jskfan
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by:Predrag
Predrag earned 1600 total points
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Yes, on ports between switches. Typically only one of those, since they are pretty similar.
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by:jskfan
ID: 41772199
Yes, on ports between switches. Typically only one of those, since they are pretty similar.
On Trunk ports Only  ?
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by:Vincent Zheng
Vincent Zheng earned 400 total points
ID: 41772257
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Accepted Solution

by:
Predrag earned 1600 total points
ID: 41772330
Yes, on trunk ports only since mechanism both enchansments are using is BPDU. If there is no BPDU on port link will be err-disabled (ports to any device that is not sending BPDU will be error disabled (UDLD will err-disable port only if aggressive mode is configured)).
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Author Closing Comment

by:jskfan
ID: 41781998
Thank you Guys!
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