Suddenly, constant UDLD alerts

EJN
A model citizen

Suddenly, constant UDLD alerts

The only thing that happened is a Netgear switch downstream came back online after a power outage.

 

The alerts are getting generated on many/most/all of my uplink ports on multiple Meraki switches.

 

I'm new to UDLD.

 

Where can I start troubleshooting? Most common causes for this?

 

 

Esteban J Nunez
School and Church
K-12 Education
2 Replies 2
alemabrahao
Kind of a big deal
Kind of a big deal

Take a look at this article:

 

https://documentation.meraki.com/MS/Other_Topics/Unidirectional_Link_Detection_(UDLD)

I am not a Cisco Meraki employee. My suggestions are based on documentation of Meraki best practices and day-to-day experience.

Please, if this post was useful, leave your kudos and mark it as solved.
PhilipDAth
Kind of a big deal
Kind of a big deal

I would try:

* Temporarily removing the cable to the NetGear and then plugging it in.

* Power cycle the NetGear.

 

The problem is most likely transient.  There is a slim chance it is the cable, or you have a damaged switch port.

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