I changed the PA-MC-T3s to line clocking, but still getting errors. If I connect both T1s to the same DS3, everything is fine. It's only if I spread the MLPPP T1's across the PA-MC-T3. I don't have the spread them, but it does the customer some redundancy. The CPE is an Adtran TA908e.
Since I know the Adtran uses the same clock for both T1s and the PA-MC-T3's aren't, I have changed the T1 ports on the PA-MC-T3 to line and changed the adtran to internal and the slips have stopped. I do feel better with the PA-MC-T3 set to line on the DS3. Common clock achieved, sorta. :) On Jun 5, 2012, at 4:41 PM, Natambu Obleton wrote: > Yeah. We have external BITS clocks, and secondary timing from the local > exchange carrier. I will try line timing after hours tonight. If I terminate > the T1's the same PA-MC-T3 I don't have slips, so the PA-MC-T3 must have a > clock on the card.... > > -- > > Natambu Obleton, CISSP CCNA > Senior Network Engineer > FastTrack Communications, Inc. > 970.828.1009 > > -----Original Message----- > From: Walter Keen [mailto:[email protected]] > Sent: Tuesday, June 05, 2012 3:59 PM > To: Natambu Obleton > Cc: [email protected] > Subject: Re: [c-nsp] CT3 Timing issue > > In most cases, a topology like this will have the ONS's synced to GPS time, > or some accurate clock (or line clocking if your ONS connects to another > provider, but GPS is typically preferred) and then I would DEFINITELY use > line clocking on the PA-MC-T3, unless you have the capability through a clock > card to connect the 7204 to the same timing source as the ONS uses (ie: GPS > derived clock) Whenever possible, keep all devices in sync with a common clock > > > > > ----- Original Message ----- > > From: "Natambu Obleton" <[email protected]> > To: [email protected] > Sent: Tuesday, June 5, 2012 2:17:54 PM > Subject: [c-nsp] CT3 Timing issue > > Hello, > > I have a customer with a 2xT1 MPPP link to my 7204. The T1 come in to the > 7204 on different PA-MC-T3 cards. The PA-MC-T3 cards plug into my ONS 15454 > SONET network. When I have timing set on the CPE to one of the T1s the other > T1 gets slips and vice versa. Both of the PA-MC-T3 are set for internal > timing. Shouldn't their timing be the same or should I have these setup for > line timing? Thanks. > > -- > > Natambu Obleton, CISSP CCNA > Senior Network Engineer > FastTrack Communications, Inc. > 970.828.1009 > > _______________________________________________ > cisco-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/cisco-nsp > archive at http://puck.nether.net/pipermail/cisco-nsp/ > > _______________________________________________ > cisco-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/cisco-nsp > archive at http://puck.nether.net/pipermail/cisco-nsp/ _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
