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Webcast-Catalyst9k
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How can i disable cdp vlan mismatch message?

Hello,

I have some trouble with vlan mismatch using cdp message. because, port of main siwch configured vlan 100, but port of access switch configured vlan1. thus vlan mismatch message displayed using cdp message.

At this time, I'm usally try to change some value both of switches. for examlple, chaning vtp domain or disabling cdp or adjusting vlan information both of swiches.

Is there any other method to troubleshooting these issue?

regards,

John.

3 REPLIES
Purple

Re: How can i disable cdp vlan mismatch message?

Hi John,

That message is mostly harmless.

There are a couple of things you can do to get around this message:

- disable CDP version 2. Version 1 does not display this message

- make the VLANs the same at both ends

Hope that helps - pls rate the post if it does.

Paresh

Silver

Re: How can i disable cdp vlan mismatch message?

Hi joh,

Changing the vtp domain and all will not help you,It is clear that there is mismatch in the allowing vlan in the connected ports of both sitches.

Try to configure both ports in the same vlan, or else leave the port of the access switch in trunk mode without specifiying any vlan if it doesn't affect your traffic.

Rgs,

Bronze

Re: How can i disable cdp vlan mismatch message?

You could also get rid of CDP completely (unless you need it for some reason) using the command "no cdp enable" in global configuration.

HTH

Please rate posts that help.

Regards

Arvind

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