Maybe CPD have a behavior went a vlan is configure in a port. CDP is L1 protocol but in a switch the traffic must flow over a vlan no matter the type (by default 1). Maybe your config error create this error on the switch. Just maybe.. I never saw that behavior
On Thu, Aug 19, 2010 at 9:47 PM, marc abel <[email protected]> wrote: > I had made a typo configuring one of my switches and assigned an access > port to a vlan that didn't exist on the switch. While trying to troubleshoot > why I had no connectivity I noticed I had a one way CDP relationship. In > other words I could see the router from the switch, but the router didn't > see a cdp neighbor on the interface. Once I put the switchport in the right > vlan I could see the switch. > > Could anyone explain why this happens? It might help me understand CDP > better. > > Thank you, > > Marc > > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > >
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