CDP time-to-live errors 1

[ezgrunt]

Having some issues in a large network of 42 3300's. Getting more and more call quality issues. We have zero access to the network and don't have the ability to view any configuration on the network. It is a pretty simple Cisco network from what I gather. 42 locations starting at 10.1.xxx.xxx and going to 10.42.xxx.xxx. I don't need to know how to pinpoint the cause of the CDP errors, I only need help on telling the network admin where he can begin his search and maybe what he needs to look for. Anyone else had any experience with UDP Flood or Redundant Failover Activity and/or CDP TTL data expiration. I only ask about these because that is what most of my maintenance log errors are. Thanks for any help.

 

[jrgood0852]

Can you turn CDP off on one of the problem sets and see if the problem goes away?:


Debug, Tools and Features, Edit CDP settings, disable CDP


Worth a shot.




Always look out for the next guy because it may be you!

 

[LoopyLou]

Where are the call quality issues encountered? IP set to IP set? IP set to a trunk? IP set at one location to another? Depending where the issue is located there are different possible causes. If IP set to IP set then you would look at the local networks and Qos setup. If IP to trunk you might need to check the trunks. If IP set at one site to another site then you have to look at Qos on the link between sites i.e if you are connected via MPLS then is Qos setup on the link? Not sure if CDP errors tie to voice quality. You try setting up VQ stats on the 3300 and looking at them?

The beatings will continue until morale improves.

 

[ezgrunt]

Thanks for the replies. Have tried to disable CDP on several problem phones and they seem to be behaving. Will point their admin to this and see what he can come up with. If nothing else, I'll have them disable CDP (they only enabled a few years ago because we asked) and program QOS in the 3300.