I am using an internal DSU on my end. I am not sure what they are using on their end. I have checked and double checked the linecoding and framing. This is a SouthWestern Bell circuit, but it passes through a different long distance carrier. It should be B8ZS, ESF, and HDLC on the layer 2. Again, when the remote end is set to line, they seem to be fine. When they go to internal they cause framing errors. This leads me to believe that there already is a clock signal on their end of the link. Regardless of whether I go to line or internal my line protocol bounces.
Stephen ----- Original Message ----- From: To: Sent: Wednesday, October 03, 2001 10:50 AM Subject: RE: T1 install; line protocol going down and up every 30 [7:21863] > Sounds like a clocking issue to me. Are you using internal or external > CSU/DSU? > > -Eric > > -----Original Message----- > From: Stephen Hoover [mailto:[EMAIL PROTECTED]] > Sent: Wednesday, October 03, 2001 9:47 AM > To: [EMAIL PROTECTED] > Subject: T1 install; line protocol going down and up every 30 seconds > [7:21848] > > > I am working on point to point T1 install at a small office. The line > protocol keeps going up and down every 30 seconds and I cannot ping myself. > My keepalive timers are not incrementing. The telco provider says that they > are not providing the clock on this line and that we need to do so > ourselves. My condition remains the same whether I set my clock to line or > internal. The router on the remote end however seems to be ready to go when > they set their clock source to line. When they set to internal, the telco > provider sees framing errors on the line. > > Does it seem feasible that there is a clock source somewhere back towards > there end of the line that their router can receive and mine cannot? I am > working with the IT staff on the remote end of the link, but none of us seem > to have any idea where else to go with this problem. > > My system works fine when I put my DSU in local loopback and it works when I > put their DSU in remote loopback - so I *think* the hardware is sound. > > Any help is appreciated! > > Thanks, > Stephen Hoover Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=21872&t=21872 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
