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channelized E1 controller  circuit help 500 points

Posted on 2006-05-09
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Last Modified: 2008-01-09
I'm trying to setup a leased line with two cisco 1841s that are using vwic-1mft-g703 controllers.
My providerr have confirmed this should be UNFRAMED AND linecode HDB3


I am seeing an error on my E1 controller as follows

Receiver is getting AIS

Is this an error at mine or the carriers end?



Here is the output of the show controllers e1 0/0/0

router_a#show controllers e1 0/0/0
E1 0/0/0 is down.
  Applique type is Channelized E1 - balanced
  Receiver is getting AIS.
  alarm-trigger is not set
  Version info Firmware: 20041023, FPGA: 16, spm_count = 0
  Framing is UNFRAMED, Line Code is HDB3, Clock Source is Line.
  CRC Threshold is 320. Reported from firmware  is 320.
  Data in current interval (724 seconds elapsed):
     0 Line Code Violations, 0 Path Code Violations
     0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
     0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 1442 Unavail Secs
  Data in Interval 1:
     0 Line Code Violations, 0 Path Code Violations
     0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
     0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 1800 Unavail Secs
  Data in Interval 2:
     1 Line Code Violations, 0 Path Code Violations
     0 Slip Secs, 0 Fr Loss Secs, 1 Line Err Secs, 0 Degraded Mins
     1 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 874 Unavail Secs
  Data in Interval 3:
     0 Line Code Violations, 0 Path Code Violations
     0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
     0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 1660 Unavail Secs
  Data in Interval 4:
     2 Line Code Violations, 0 Path Code Violations
     1 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
     1 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 1029 Unavail Secs
  Total Data (last 4 15 minute intervals):
     3 Line Code Violations, 0 Path Code Violations,
     1 Slip Secs, 0 Fr Loss Secs, 1 Line Err Secs, 0 Degraded Mins,
     2 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 5363 Unavail Secs
router_a#



Here is the output of show serial interface 0/0/0:0
router_a#sho in serial 0/0/0:0
% Ambiguous command:  "sho in serial 0/0/0:0"
EllisLds_stras#sho int serial 0/0/0:0
Serial0/0/0:0 is down, line protocol is down
  Hardware is GT96K Serial
  Internet address is 192.168.4.1/30
  MTU 1500 bytes, BW 2048 Kbit, DLY 20000 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation HDLC, loopback not set
  Keepalive set (10 sec)
  Last input 00:35:22, output 00:09:16, output hang never
  Last clearing of "show interface" counters never
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: weighted fair
  Output queue: 0/1000/64/0 (size/max total/threshold/drops)
     Conversations  0/1/256 (active/max active/max total)
     Reserved Conversations 0/0 (allocated/max allocated)
     Available Bandwidth 1536 kilobits/sec
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     248 packets input, 19497 bytes, 0 no buffer
     Received 90 broadcasts, 0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
     257 packets output, 22068 bytes, 0 underruns
     0 output errors, 0 collisions, 8 interface resets
     0 output buffer failures, 0 output buffers swapped out
     11 carrier transitions
  Timeslot(s) Used: UNFRAMED, SCC: 0, Transmitter delay is 0 flags
router_a#












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Question by:lowfell
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LVL 12

Expert Comment

by:pjtemplin
ID: 16640506
Router A is receiving AIS - what is router B receiving?

AIS should indicate that router B is receiving a major alarm, and is transmitting AIS to indicate that's unhappy with what it's receiving.  Can you have the carrier confirm that they're receiving a proper signal from router A?  Can you have the carrier loop the circuit, or have someone at router B loop the equipment, towards the A end and see if the AIS condition clears?
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Author Comment

by:lowfell
ID: 16642950
Router_b isn't plugged in yet!

I am only checking the router_a end for now!

I am using vwic- 1mft-g703 E1 controllers. The carrier says he's looped up to the nte and says its clear, I can only do a local loop through the router & this brings up the serial interface and the alarm drops. however, when i take MY local loop off ,the alarm re-appears!

I am using just a standard rj45 straight through cable from the nte into the e1 controller. Is this correct, or do i need to change the pinout?


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Accepted Solution

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pjtemplin earned 1500 total points
ID: 16643457
If B isn't plugged in yet, you're going to get alarms.

If the carrier loops back towards themselves, you won't see the link come up.  If they loop towards you, you'll see it come up just like when you did the local loop.

Pinout sounds fine.
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