[c-nsp] Serial interface stuck in "reset" status.

[Joseph Mays]

Okay. Trying to bring up a T1 on a channel on a channelized t3 card in an AS5400. I've done this more than once and have other working T1's on the same t3 card.

I have the config on both ends; it's very simple.

On the AS5400...

controller T1 1/0:26
 shutdown
 framing esf
 channel-group 0 timeslots 1-20

[...]

interface Serial1/0:26:0
 description Glass Doctor (K1.HCFU.417839..SC)
 no ip address
 encapsulation ppp
 no cdp enable
 ppp multilink
 ppp multilink group 180025

One the remote side ...

controller T1 0/0
 framing esf
 linecode b8zs
 channel-group 0 timeslots 1-20 speed 56

[...]

interface Serial0/0:0
 no ip address
 encapsulation ppp
 ppp multilink
 ppp multilink group 1

The problem I am having is that the t1 controller seems to come up fine and error free...

ArmoryPl-AS5400#show controller t1 1/0:26
T1 1/0:26 is up.
  Applique type is Channelized T1
  No alarms detected.
  alarm-trigger is not set
  Version info of slot 1:  HW: 768, PLD Rev: 4
  Framer Version: 0x28

Manufacture Cookie Info:
 EEPROM Type 0x0001, EEPROM Version 0x01, Board ID 0x01,
 Board Hardware Version 3.0, Item Number 73-4089-03,
 Board Revision B0, Serial Number JAE050301LR,
 PLD/ISP Version <unset>,  Manufacture Date 18-Jan-2001.

  Framing is ESF, Clock Source is Line.
  Data in current interval (293 seconds elapsed):
     0 Line Code Violations, 1 Path Code Violations
     0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
     1 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 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, 0 Unavail Secs
  Data in Interval 2:

... but the serial interface is stuck in "reset" status.

ArmoryPl-AS5400#show int Serial1/0:26:0
Serial1/0:26:0 is reset, line protocol is down
  Hardware is DSX1
  Description: Glass Doctor (K1.HCFU.417839..SC)
  MTU 1500 bytes, BW 1120 Kbit, DLY 20000 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation PPP, LCP Closed, multilink Closed
  Closed: BACP, loopback not set
  Last input never, output never, output hang never
  Last clearing of "show interface" counters 13:01:00
  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  0/0/256 (active/max active/max total)
     Reserved Conversations 0/0 (allocated/max allocated)
     Available Bandwidth 840 kilobits/sec
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     0 packets input, 0 bytes, 0 no buffer
     Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
     0 packets output, 0 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     0 output buffer failures, 0 output buffers swapped out

Strangely, it stays in reset status even if I turn the t1 down.

ArmoryPl-AS5400#show controller t1 1/0:26
T1 1/0:26 is administratively down.
  Applique type is Channelized T1
  Transmitter is sending AIS.
  Receiver has remote alarm.
  alarm-trigger is not set
  Version info of slot 1:  HW: 768, PLD Rev: 4
  Framer Version: 0x28

Manufacture Cookie Info:
 EEPROM Type 0x0001, EEPROM Version 0x01, Board ID 0x01,
 Board Hardware Version 3.0, Item Number 73-4089-03,
 Board Revision B0, Serial Number JAE050301LR,
 PLD/ISP Version <unset>,  Manufacture Date 18-Jan-2001.

  Framing is ESF, Clock Source is Line.
  Data in current interval (334 seconds elapsed):
     0 Line Code Violations, 1 Path Code Violations
     0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 1 Degraded Mins
     1 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 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, 0 Unavail Secs

ArmoryPl-AS5400#show int Serial1/0:26:0
Serial1/0:26:0 is reset, line protocol is down
  Hardware is DSX1
  Description: Glass Doctor (K1.HCFU.417839..SC)
  MTU 1500 bytes, BW 1120 Kbit, DLY 20000 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation PPP, LCP Closed, multilink Closed
  Closed: BACP, loopback not set
  Last input never, output never, output hang never
  Last clearing of "show interface" counters 13:05:11
  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  0/0/256 (active/max active/max total)
     Reserved Conversations 0/0 (allocated/max allocated)
     Available Bandwidth 840 kilobits/sec
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     0 packets input, 0 bytes, 0 no buffer
     Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
     0 packets output, 0 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     0 output buffer failures, 0 output buffers swapped out

I tried clear interface Serial1/0:26:0, to no avail. Still in reset status. What exactly does reset status mean and how could one channel on a t3 controller get stuck in that state?