[c-nsp] DS3 mux issues

[Justin Shore]

Larry Smith wrote:
>>   t1 26 channel-group 0 timeslots 1-24
>>   t1 27 channel-group 0 timeslots 1-24
>>   t1 28 channel-group 0 timeslots 1-24
>>
> controller T3 5/0
>  framing m23
>  clock source line
>  cablelength 10
>  t1 1 channel-group 0 timeslots 1-24
>  t1 2 channel-group 1 timeslots 1-24
>  t1 3 channel-group 2 timeslots 1-12

Morning, Larry.  Do you know if the channel-group # is significant to 
each DS1 or does the channel-group # have to be unique across the DS3? 
I'm thinking that it's unique to the DS1 so that you can create X number 
of channel-groups on a DS1 if needed but I'm not 100% on that.

>  t1 1 clock source Line

Do you think I should generate clocking on our router or on the mux?  We 
don't have an external clock source in that CO.  I expect to have up to 
a dozen different M13s connected to this 7206 as time goes by.  Would it 
be a problem if the 7206 received clocking on each DS3 from each of the 
muxes or would that screw things up internally?  At this point I don't 
expect to get handed a T1 w/ clocking from the RBOC.  All the CPEs will 
be line of course.

> On your virtual, what does it show:

7206:
Serial1/0/1:0 is down, line protocol is down
   Hardware is PA-MC-2T3-EC
   Internet address is 1.1.1.1/24
   MTU 1500 bytes, BW 1536 Kbit/sec, DLY 20000 usec,
      reliability 253/255, txload 1/255, rxload 1/255
   Encapsulation HDLC, crc 16, loopback not set
   Keepalive set (10 sec)
   Last input 18:15:59, output never, output hang never
   Last clearing of "show interface" counters 00:00:07
   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  0/1/16 (active/max active/max total)
      Reserved Conversations 0/0 (allocated/max allocated)
      Available Bandwidth 1152 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, 1 interface resets
      0 output buffer failures, 0 output buffers swapped out
      0 carrier transitions alarm present
   VC:0 Timeslot(s): 1-24, Transmitter delay 0, non-inverted data

2811:
Serial0/1/1:0 is down, line protocol is down
   Hardware is GT96K Serial
   MTU 1500 bytes, BW 1536 Kbit, DLY 20000 usec,
      reliability 252/255, txload 1/255, rxload 1/255
   Encapsulation HDLC, loopback not set
   Keepalive set (10 sec)
   CRC checking enabled
   Last input 18:33:23, output 18:33:13, output hang never
   Last clearing of "show interface" counters 19:36:46
   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 1152 kilobits/sec
   5 minute input rate 0 bits/sec, 0 packets/sec
   5 minute output rate 0 bits/sec, 0 packets/sec
      39 packets input, 3582 bytes, 0 no buffer
      Received 39 broadcasts, 0 runts, 1 giants, 0 throttles
      16 input errors, 16 CRC, 14 frame, 6 overrun, 0 ignored, 8 abort
      40 packets output, 3606 bytes, 0 underruns
      0 output errors, 0 collisions, 1 interface resets
      0 output buffer failures, 0 output buffers swapped out
      2 carrier transitions
   Timeslot(s) Used:1-24, SCC: 1, Transmitter delay is 0 flags


Both are configured only with an IP and are unshut.

Thanks
  Justin