[c-nsp] DS3 mux issues

Justin Shore justin at justinshore.com
Tue Dec 9 16:28:53 EST 2008


We're staging a DS3 mux to aggregate T1s back to a PA-MC-2T3-EC in a 
7206VXR (G2) running 12.4(15)T7.  I haven't channelized a T3 before so 
I'm feeling my way through this.  It looks to be relatively simple but 
I'm getting tripped up somewhere.  On the 7206:

controller T3 1/0
  cablelength 10
  logging-events detail
  t1 1 channel-group 0 timeslots 1-24
  t1 2 channel-group 0 timeslots 1-24
  t1 3 channel-group 0 timeslots 1-24
  t1 4 channel-group 0 timeslots 1-24
  t1 5 channel-group 0 timeslots 1-24
  t1 6 channel-group 0 timeslots 1-24
  t1 7 channel-group 0 timeslots 1-24
  t1 8 channel-group 0 timeslots 1-24
  t1 9 channel-group 0 timeslots 1-24
  t1 10 channel-group 0 timeslots 1-24
  t1 11 channel-group 0 timeslots 1-24
  t1 12 channel-group 0 timeslots 1-24
  t1 13 channel-group 0 timeslots 1-24
  t1 14 channel-group 0 timeslots 1-24
  t1 15 channel-group 0 timeslots 1-24
  t1 16 channel-group 0 timeslots 1-24
  t1 17 channel-group 0 timeslots 1-24
  t1 18 channel-group 0 timeslots 1-24
  t1 19 channel-group 0 timeslots 1-24
  t1 20 channel-group 0 timeslots 1-24
  t1 21 channel-group 0 timeslots 1-24
  t1 22 channel-group 0 timeslots 1-24
  t1 23 channel-group 0 timeslots 1-24
  t1 24 channel-group 0 timeslots 1-24
  t1 25 channel-group 0 timeslots 1-24
  t1 26 channel-group 0 timeslots 1-24
  t1 27 channel-group 0 timeslots 1-24
  t1 28 channel-group 0 timeslots 1-24

I've got a spare 2811 with a VWIC-2MFT-T1 on the other end configured 
like this:

controller T1 0/1/0
  framing esf
  linecode b8zs
  cablelength short 133
  channel-group 0 timeslots 1-24
!
controller T1 0/1/1
  framing esf
  linecode b8zs
  cablelength short 133
  channel-group 0 timeslots 1-24


Clock source is internal on the 7206 and line on the 2811.  Everything 
else assumed the default settings.

In the middle is a new Wide Bank 28 that was set up by one of our telco 
guys.  He said the necessary config is minimal.

My T3 is up but I'm down/down on the serial ints on both ends.  I can 
manually loop up the 2811 at the VWIC and the int comes up.  I can loop 
it up at the biscuit jack on the 2811's side of the mux and the 
appropriate T1 on the 7206 comes up.  To me that makes me think the mux 
is fine and that both ends are fine (at least from their perspective). 
So that makes me think that something isn't matching up on the 7206 and 
2811.

The linecode on the T3 is B3ZS of course and framing for the T1 is ESF. 
    The T1 on the 2811 is B8ZS and ESF.


On the 7206:

7206-1.amherst#sh controllers t3 1/0 br
T3 1/0 is up.
   Applique type is Channelized T3/T1
   No alarms detected.
   Framing is M23, Line Code is B3ZS, Clock Source is Internal
   Equipment customer loopback

   T1 1 is down
   timeslots: 1-24
   FDL per AT&T 54016 spec.
   Transmitter is sending LOF Indication.
   Receiver is getting AIS.
   Framing is ESF, Clock Source is Internal


7206-1.amherst#sh controllers t3 1/0
T3 1/0 is up.
   Applique type is Channelized T3/T1
   No alarms detected.
   Framing is M23, Line Code is B3ZS, Clock Source is Internal
   Equipment customer loopback
   Data in current interval (611 seconds elapsed):
      0 Line Code Violations, 0 P-bit Coding Violation
      0 C-bit Coding Violation, 0 P-bit Err Secs
      0 P-bit Severely Err Secs, 0 Severely Err Framing Secs
      0 Unavailable Secs, 0 Line Errored Secs
      0 C-bit Errored Secs, 0 C-bit Severely Errored Secs
      0 Severely Errored Line Secs
      0 Far-End Errored Secs, 0 Far-End Severely Errored Secs
      0 CP-bit Far-end Unavailable Secs
      0 Near-end path failures, 0 Far-end path failures
      0 Far-end code violations, 0 FERF Defect Secs
      0 AIS Defect Secs, 0 LOS Defect Secs
   Data in Interval 1:
      0 Line Code Violations, 0 P-bit Coding Violation
      0 C-bit Coding Violation, 0 P-bit Err Secs
      0 P-bit Severely Err Secs, 0 Severely Err Framing Secs
      0 Unavailable Secs, 0 Line Errored Secs
      0 C-bit Errored Secs, 0 C-bit Severely Errored Secs
      0 Severely Errored Line Secs
      0 Far-End Errored Secs, 0 Far-End Severely Errored Secs
      0 CP-bit Far-end Unavailable Secs
      0 Near-end path failures, 0 Far-end path failures
      0 Far-end code violations, 0 FERF Defect Secs
      0 AIS Defect Secs, 0 LOS Defect Secs
   Data in Interval 2:
      0 Line Code Violations, 0 P-bit Coding Violation
      0 C-bit Coding Violation, 0 P-bit Err Secs
      0 P-bit Severely Err Secs, 0 Severely Err Framing Secs
      0 Unavailable Secs, 0 Line Errored Secs
      0 C-bit Errored Secs, 0 C-bit Severely Errored Secs
      0 Severely Errored Line Secs
      0 Far-End Errored Secs, 0 Far-End Severely Errored Secs
      0 CP-bit Far-end Unavailable Secs
      0 Near-end path failures, 0 Far-end path failures
      0 Far-end code violations, 0 FERF Defect Secs
      0 AIS Defect Secs, 0 LOS Defect Secs
   Data in Interval 3:
      0 Line Code Violations, 0 P-bit Coding Violation
      0 C-bit Coding Violation, 0 P-bit Err Secs
      0 P-bit Severely Err Secs, 0 Severely Err Framing Secs
      0 Unavailable Secs, 0 Line Errored Secs
      0 C-bit Errored Secs, 0 C-bit Severely Errored Secs
      0 Severely Errored Line Secs
      0 Far-End Errored Secs, 0 Far-End Severely Errored Secs
      0 CP-bit Far-end Unavailable Secs
      0 Near-end path failures, 0 Far-end path failures
      0 Far-end code violations, 0 FERF Defect Secs
      0 AIS Defect Secs, 0 LOS Defect Secs
   Data in Interval 4:
      0 Line Code Violations, 0 P-bit Coding Violation
      0 C-bit Coding Violation, 0 P-bit Err Secs
      0 P-bit Severely Err Secs, 0 Severely Err Framing Secs
      0 Unavailable Secs, 0 Line Errored Secs
      0 C-bit Errored Secs, 0 C-bit Severely Errored Secs
      0 Severely Errored Line Secs
      0 Far-End Errored Secs, 0 Far-End Severely Errored Secs
      0 CP-bit Far-end Unavailable Secs
      0 Near-end path failures, 0 Far-end path failures
      0 Far-end code violations, 0 FERF Defect Secs
      0 AIS Defect Secs, 0 LOS Defect Secs
   Data in Interval 5:
      0 Line Code Violations, 0 P-bit Coding Violation
      0 C-bit Coding Violation, 0 P-bit Err Secs
      0 P-bit Severely Err Secs, 0 Severely Err Framing Secs
      0 Unavailable Secs, 0 Line Errored Secs
      0 C-bit Errored Secs, 0 C-bit Severely Errored Secs
      0 Severely Errored Line Secs
      0 Far-End Errored Secs, 0 Far-End Severely Errored Secs
      0 CP-bit Far-end Unavailable Secs
      0 Near-end path failures, 0 Far-end path failures
      0 Far-end code violations, 0 FERF Defect Secs
      0 AIS Defect Secs, 0 LOS Defect Secs
   Data in Interval 6:
      0 Line Code Violations, 0 P-bit Coding Violation
      0 C-bit Coding Violation, 0 P-bit Err Secs
      0 P-bit Severely Err Secs, 0 Severely Err Framing Secs
      0 Unavailable Secs, 0 Line Errored Secs
      0 C-bit Errored Secs, 0 C-bit Severely Errored Secs
      0 Severely Errored Line Secs
      0 Far-End Errored Secs, 0 Far-End Severely Errored Secs
      0 CP-bit Far-end Unavailable Secs
      0 Near-end path failures, 0 Far-end path failures
      0 Far-end code violations, 0 FERF Defect Secs
      0 AIS Defect Secs, 0 LOS Defect Secs
   Data in Interval 7:
      0 Line Code Violations, 0 P-bit Coding Violation
      0 C-bit Coding Violation, 0 P-bit Err Secs
      0 P-bit Severely Err Secs, 0 Severely Err Framing Secs
      0 Unavailable Secs, 0 Line Errored Secs
      0 C-bit Errored Secs, 0 C-bit Severely Errored Secs
      0 Severely Errored Line Secs
      0 Far-End Errored Secs, 0 Far-End Severely Errored Secs
      0 CP-bit Far-end Unavailable Secs
      0 Near-end path failures, 0 Far-end path failures
      0 Far-end code violations, 0 FERF Defect Secs
      0 AIS Defect Secs, 0 LOS Defect Secs
   Data in Interval 8:
      0 Line Code Violations, 0 P-bit Coding Violation
      0 C-bit Coding Violation, 0 P-bit Err Secs
      0 P-bit Severely Err Secs, 0 Severely Err Framing Secs
      1 Unavailable Secs, 0 Line Errored Secs
      0 C-bit Errored Secs, 0 C-bit Severely Errored Secs
      0 Severely Errored Line Secs
      0 Far-End Errored Secs, 0 Far-End Severely Errored Secs
      0 CP-bit Far-end Unavailable Secs
      0 Near-end path failures, 1 Far-end path failures
      0 Far-end code violations, 10 FERF Defect Secs
      0 AIS Defect Secs, 0 LOS Defect Secs
   Total Data (last 8 15 minute intervals):
      0 Line Code Violations, 0 P-bit Coding Violation,
      0 C-bit Coding Violation, 0 P-bit Err Secs,
      0 P-bit Severely Err Secs, 0 Severely Err Framing Secs,
      1 Unavailable Secs, 0 Line Errored Secs,
      0 C-bit Errored Secs, 0 C-bit Severely Errored Secs
      0 Severely Errored Line Secs
      0 Far-End Errored Secs, 0 Far-End Severely Errored Secs
      0 CP-bit Far-end Unavailable Secs
      0 Near-end path failures, 1 Far-end path failures
      0 Far-end code violations, 10 FERF Defect Secs
      0 AIS Defect Secs, 0 LOS Defect Secs

   T1 1 is down
   timeslots: 1-24
   FDL per AT&T 54016 spec.
   Transmitter is sending LOF Indication.
   Receiver is getting AIS.
   Framing is ESF, Clock Source is Internal
   BERT test result (done)
      Test Pattern : All 0's, Status : Not Sync, Sync Detected : 0
      Interval : 5 minute(s), Time Remain : 0 minute(s)
      Bit Errors (since BERT started): 0 bits,
      Bits Received (since BERT started): 3 Mbits
      Bit Errors (since last sync): 0 bits
      Bits Received (since last sync): 0 Kbits
   Data in current interval (509 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
      509 Unavail Secs, 0 Stuffed Secs
      255 Near-end path failures, 0 Far-end path failures, 0 SEF/AIS 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
      900 Unavail Secs, 0 Stuffed Secs
      450 Near-end path failures, 0 Far-end path failures, 0 SEF/AIS Secs
   Data in Interval 2:
      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
      900 Unavail Secs, 0 Stuffed Secs
      450 Near-end path failures, 0 Far-end path failures, 0 SEF/AIS 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
      717 Unavail Secs, 0 Stuffed Secs
      361 Near-end path failures, 1 Far-end path failures, 0 SEF/AIS Secs
   Data in Interval 4:
      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
      900 Unavail Secs, 0 Stuffed Secs
      450 Near-end path failures, 0 Far-end path failures, 0 SEF/AIS Secs
   Data in Interval 5:
      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
      900 Unavail Secs, 0 Stuffed Secs
      450 Near-end path failures, 0 Far-end path failures, 0 SEF/AIS Secs
   Data in Interval 6:
      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
      900 Unavail Secs, 0 Stuffed Secs
      450 Near-end path failures, 0 Far-end path failures, 0 SEF/AIS Secs
   Data in Interval 7:
      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
      847 Unavail Secs, 0 Stuffed Secs
      429 Near-end path failures, 2 Far-end path failures, 0 SEF/AIS Secs
   Data in Interval 8:
      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
      900 Unavail Secs, 0 Stuffed Secs
      450 Near-end path failures, 0 Far-end path failures, 0 SEF/AIS Secs
   Total Data (last 8 15 minute intervals):
      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
      6964 Unavail Secs, 0 Stuffed Secs

On the 2811:

S1-2811#sh controllers t1 0/1/0 br
T1 0/1/0 is down.
   Applique type is Channelized T1
   Cablelength is short 133
   Transmitter is sending remote alarm.
   Receiver has loss of signal.
   alarm-trigger is not set
   Soaking time: 3, Clearance time: 10
   AIS State:Clear  LOS State:Clear  LOF State:Clear
   Version info Firmware: 20070320, FPGA: 20, spm_count = 0
   Framing is ESF, FDL is ansi & att, Line Code is B8ZS, Clock Source is 
Line.
   CRC Threshold is 320. Reported from firmware  is 320.
   Data in current interval (760 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, 760 
Unavail Secs
   Total Data (last 26 15 minute intervals):
      37460 Line Code Violations, 8785 Path Code Violations,
      2 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins,
      2 Errored Secs, 0 Bursty Err Secs, 7 Severely Err Secs, 22169 
Unavail Secs


I can't find any way to set the line code on the 7206 for the individual 
T1s.  The virtual serial ints only have an IP on them at this point. 
Everything is unshut.  Any idea what I could be missing?  What's causing 
all the path and line code violations?

Thanks
  Justin


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