Hey Scott, thanks for your reply. I just changed the side of the DCE (swap cable end and configured clock rate at the same speed on the other side of the connection). It worked!
My question now is: WHY? Using same cable, same interfaces, same clock rate but having the "Master" router on one side does not work however, if the "Master" side is swapped (change the DCE end to the neighbor router) it works! Any ideas would be greatly appreciated :) --- Scott Morris <[EMAIL PROTECTED]> wrote: > If you can use the other serial port just fine, my > guess would be that you > have a bad port. If it were just the single port, > I'd say lower the clock > rate as your cable may be bad (try 128000 or 64000). > > > Scott Morris, CCIE4 (R&S/ISP-Dial/Security/Service > Provider) #4713, JNCIE > #153, CISSP, et al. > CCSI/JNCI-M/JNCI-J > IPexpert VP - Curriculum Development > IPexpert Sr. Technical Instructor > [EMAIL PROTECTED] > http://www.ipexpert.com > > > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On > Behalf Of Tony Hidalgo > Sent: Monday, February 05, 2007 5:47 PM > To: [email protected] > Subject: [OSL | CCIE_RS] PPP over Serial > Back-to-Back > > Hello people from the list. > > I am having and issue connection two 2620's > back-to-back over a serial pipe > (DCE-DTE) using either PPP or HDLC as the > encapsulation protocol. > > When I connect the two routers using S0/0 on router > "A" and S0/1 on router > "B" the connection comes up with either L2 encap. > protocols. I can see each > other through CDP, etc. In this config, I get > interface UP and Line Protocol > UP. > > When I connect the two routers using the same > interface type/number on both > sides (IE S0/1 on router "A" and S0/1 on router > "B"), the connection does > not come up 100%. I see the interface UP but the > line protocol is DOWN on > both sides. > > Of course, I am setting the clock rate on the DCE > side, and when I turn on > debugging for PPP events, I see the following: > > LCP: Timeout: State ACKsent > LCP: State is Listen > > Both routers are 2620's and running IOS 12.3. This > is the config on the > interfaces in question: > interface Serial0/1 > no ip address > encapsulation ppp > no peer neighbor-route (I can have this command on > or off without > difference) > > In the Lab that I am currently working on, this is > the physical connection > to be used and also I have seen this same setup on > other documents without > any reference to a problem with using the same > interface type/number on both > sides. > > If I change the interface on either side (EI S0/0 - > S0/1), the pipe comes up > fully. > > Does anybody have a clue about this? > > Thanks in advanced! > > > > > ____________________________________________________________________________ > ________ > Don't pick lemons. > See all the new 2007 cars at Yahoo! Autos. > http://autos.yahoo.com/new_cars.html > > ____________________________________________________________________________________ Do you Yahoo!? Everyone is raving about the all-new Yahoo! Mail beta. http://new.mail.yahoo.com
