cdp

Answered Question
Jun 27th, 2007
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i was thinking cdp passes only by native vlan (by default vlan1). but my computer is connected to a port configured in vlan 111 and it still receive cdp. is this normal?

Correct Answer by mohammedmahmoud about 9 years 10 months ago

Hi,


CDP is not restricted to Native VLAN, Each CDP-configured device sends periodic messages to a multicast address, but the question is how do you receive the CDP packets on your PC ?


HTH,

Mohammed Mahmoud.

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Correct Answer
mohammedmahmoud Wed, 06/27/2007 - 01:05
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Hi,


CDP is not restricted to Native VLAN, Each CDP-configured device sends periodic messages to a multicast address, but the question is how do you receive the CDP packets on your PC ?


HTH,

Mohammed Mahmoud.

ohassairi Wed, 06/27/2007 - 01:31
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i capture it via sniffer

srue Wed, 06/27/2007 - 05:20
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on the switchport interface that you don't want cdp enabled on, enter the following command:

no cdp enable


or to globally disable cdp, enter:

no cdp run

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