makes sense, I thought devices always replied to cdp messages if cdp was enabled, but I guess that is not the case.
On Fri, Aug 20, 2010 at 3:47 PM, Tyson Scott <[email protected]> wrote: > Not really an error. As far as direct communication no vlan needs to > exist to receive traffic. The switch just will not send traffic until the > port is operating properly. Wouldn't it be a bad thing if the switch sent > traffic when it shouldn't? > > > > Regards, > > > > Tyson Scott - CCIE #13513 R&S, Security, and SP > > Managing Partner / Sr. Instructor - IPexpert, Inc. > > Mailto: [email protected] > > Telephone: +1.810.326.1444, ext. 208 > > Live Assistance, Please visit: www.ipexpert.com/chat > > eFax: +1.810.454.0130 > > > > IPexpert is a premier provider of Self-Study Workbooks, Video on Demand, > Audio Tools, Online Hardware Rental and Classroom Training for the Cisco > CCIE (R&S, Voice, Security & Service Provider) certification(s) with > training locations throughout the United States, Europe, South Asia and > Australia. Be sure to visit our online communities at > www.ipexpert.com/communities and our public website at www.ipexpert.com > > > > *From:* [email protected] [mailto: > [email protected]] *On Behalf Of *Abel ... > *Sent:* Friday, August 20, 2010 10:09 AM > *To:* marc abel > *Cc:* [email protected] > *Subject:* Re: [OSL | CCIE_RS] CDP question > > > > 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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