James Gosnold wrote: > Dave, > > If I press the 'loopback' button on the DSU itself then the router > recognises this and shows Interface up, line protocol down (looped).
This is normal for non HDLC encapsulated circuits. I keep two RJ45 homemade loopback plugs in my desk, one for 56K and one for T1 to test, this is why I mentioned hardwire. > > Strange thing I noticed is that if I chance encapsulation to HDLC and press > the local loopback button on the DSU I get Interface up, line protocol up > (looped). If you can do a loopback with a loopback jack try it or better yet loop from the dmarc. Of coarse you may have to beat up the telco some more too as they ll too often declare a line good after minimal and incomplete testing. (see I'm not biased:) Dave > > > MADMAN wrote: > >>I have seen moe than once a faulty WIC-1DSU-T1 cause similiar >>problems. Have you tried doing your own hardwire loop? >> >> Dave -- David Madland CCIE# 2016 Sr. Network Engineer Qwest Communications 612-664-3367 "Government can do something for the people only in proportion as it can do something to the people." -- Thomas Jefferson Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=69603&t=69573 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
