Mark, Scrambling will jumble the payload data so it does not accidentally set off an alarm. The routers just takes the bits in and if the bit pattern matches that of an alarm it will trigger the alarm when it could actually just be data that is passing. It won't hurt to have it on, but on looking closer I am not sure this will solve your trouble.
I know that changing the timing scheme did yield empirical results but I would strongly encourage you to give it another try. It may require you to bounce the interface on both sides. Unless the timing is provided from the carrier, which again, is extremely unlikely, you are going to having timing slips. I also noticed you have the cable length very short. Can you include a sh run int s4/0 for the 7200. Can you run me through a physical setup? The cable goes to a DSX-3 panel? To a meet me room? Just wondering if the cable attenuation could be a problem as well. Of course, everything I have said could absolutely be obsoleted by the damn PA being bad, but it doesn't sound like it is bad. Thanks, Jim ----- Original Message ----- From: "Mark Walmsley" To: Sent: Sunday, March 16, 2003 5:16 AM Subject: RE: DS3 slow connection problem. [7:65491] > Hi Again Everyone, > > Just to let you all know, this morning I changed the 7200 router serial > interface clock to int and left the 7500 clock set to line, this actually > made the connection worse, I got 5% packet loss as opposed to 1% packet loss > when both router interfaces were set to line, I changed it back and it > returned to 1% packet loss so then I changed the 7500 interface clock to int > while the 7200 was set to line and this appeared to have little affect, > still getting lots of input errors on the 7200 and 1% packet loss. > I'm wondering now if we have a faulty ds3 card. > > I logged into the routers and did some ping tests, pinging the routers own > serial interface I still get the 1% packet loss. I did this on both routers, > I thought this might rule out the actual line because I'm not pinging across > the ds3 connection please correct me if i'm wrong. > > Somebody asked if scrambling was on but I'm not sure what scrambling does or > how to check if it's turned on or off so i'll look into that too. > > > Thanks for everybody's help and I'm going to spend all day checking out what > you've said and going through the troubleshooting stuff from cisco and i'll > let you know how I get on. > > Anymore advice would be greatly appreciated. > > Mark Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=65547&t=65491 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
