RE: ATM interface DOWN/DOWN

From: Jafar T (jafar@paris.com)
Date: Sat Jan 31 2009 - 21:48:24 ARST

 Did you do a loop back test to see if your HW is ok to rule it out as a
cause for this layer 1 ?
loopback can be done soft, or with a plug.
your job is to rule out layer1 now to the smart jack, or lec,
if your hw is ok, and can be up/up while looped, stress test it with
internal pings, and see if the reliability continue to show 255/255, then
you are ok,
now go upstream toward the lec and keep ruling out layer 1 toward your
interface, if ok, ping the carrier to do the same toward you so they
can isolate where the layer 1 issue is, usually they do this segment by
segmnet thru their own loopbacks

JT

  ----- Original Message -----
  From: "Lars Christensen"
  To: "'ahmad ali'" , ccielab@groupstudy.com
  Subject: RE: ATM interface DOWN/DOWN
  Date: Sun, 1 Feb 2009 00:54:23 +0100

  Hi Ahmad

  Try posting a "show controllers atm x/x". You should be able to see
  the
  reason in this output, e.g. look for active alarms etc.

  Regards
  Lars Christensen
  CCIE #20292

  -----Original Message-----
  From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
  Of
  ahmad ali
  Sent: 31. januar 2009 20:23
  To: ccielab@groupstudy.com
  Subject: ATM interface DOWN/DOWN

  Good day Experts.
  I faced recently a series problem with an ATM Interface on a 3640
  router
  which
  was down/down, Actually i'm used to no shut the ATM interfaces then
  it comes
  UP/UP but this time it's DOWN/DOWN , I'm 100 % sure the physical
  connection
  is
  good. and I don't have access to the ATM switch on the Other side.
  please
  advise what may be the problem or suggest any reference to check to
  solve
  ATM
  layer 1 problems.
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