06-11-2009 07:10 AM - edited 03-04-2019 05:04 AM
I have up / down situation, after verifying all the config , we decided that this may be wic card issue , now I got a wic installed , still up/down. I created a harloop cable and put on the t1 port , I do not see the loop, there is a LP, AL, DC Led . Only the DC is green, I should see the LP when the loop is present. Since there is no loop when I put the hard loop is that mean bad card, this is the second card that I received and it shows up/down
#sho int s1/1:0
Serial1/1:0 is up, line protocol is down
Hardware is DSCC4 Serial
Internet address is x.x.x.x/30
MTU 1500 bytes, BW 1536 Kbit, DLY 20000 usec,
reliability 216/255, txload 1/255, rxload 1/255
Encapsulation HDLC, loopback not set
Keepalive set (10 sec)
Last input never, output 00:00:01, output hang never
Last clearing of "show interface" counters 13:14:10
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 0/2/256 (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
0 packets input, 0 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
5730 input errors, 8 CRC, 5722 frame, 0 overrun, 0 ignored, 0 abort
4765 packets output, 114360 bytes, 0 underruns
0 output errors, 0 collisions, 1588 interface resets
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
Timeslot(s) Used:1-24, SCC: 1, Transmitter delay is 0 flags
06-11-2009 07:22 AM
Can you post "show controllers t1"?
HTH,
John
06-11-2009 07:25 AM
sho controllers t1
T1 1/0 is up.
Applique type is Channelized T1
Cablelength is short 133
No alarms detected.
alarm-trigger is not set
Version info Firmware: 20031216, FPGA: 11
Framing is ESF, Line Code is B8ZS, Clock Source is Line.
CRC Threshold is 320. Reported from firmware is 0.
Current port master clock: recovered from controller 1/1
Data in current interval (41 seconds elapsed):
0 Line Code Violations, 0 Path Code Violations
41 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
41 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
Total Data (last 54 15 minute intervals):
54 Line Code Violations, 11 Path Code Violations,
48127 Slip Secs, 0 Fr Loss Secs, 10 Line Err Secs, 1 Degraded Mins,
48128 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 25 Unavail Secs
T1 1/1 is up.
Applique type is Channelized T1
Cablelength is short 133
No alarms detected.
alarm-trigger is not set
Version info Firmware: 20031216, FPGA: 11
Framing is ESF, Line Code is B8ZS, Clock Source is Line.
CRC Threshold is 320. Reported from firmware is 0.
Current port master clock: recovered from controller 1/1
Data in current interval (44 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, 0 Unavail Secs
Total Data (last 54 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, 0 Unavail Secs
06-11-2009 07:28 AM
I forgot to mention that this is dual card ..and both 1/0 and 1/1 shows UP/DOWN
Thanks
06-11-2009 07:50 AM
Especially given the number of slip seconds recorded on the controller I would guess that there is a problem about clocking on the line. What do you have configured for clocking on the controller?
HTH
Rick
06-11-2009 07:52 AM
how do I find that ?
Thanks
06-11-2009 08:38 AM
scan the config, it should be right a top where controllers lines are showing.
Sam
06-11-2009 08:42 AM
You should see something at the top of your config that says:
controller t1 0/0
clock source line
controller t1 0/1
clock source line
Posting the "show controllers" shows that it's receiving clocking from the line, which is generally what it should be.
John
06-11-2009 08:53 AM
controller T1 1/0
framing esf
linecode b8zs
cablelength short 133
channel-group 0 timeslots 1-24 speed 64
!
controller T1 1/1
framing esf
linecode b8zs
cablelength short 133
channel-group 0 timeslots 1-24 speed 64
sho controllers show that ?
do I need to put different command ?
Thanks
06-11-2009 09:05 AM
try adding clock source line under controller.
06-11-2009 09:21 AM
I have the same config on an other 3660 router and it is up/up.. and does not show what you mentioned ...
controller T1 4/0
framing esf
linecode b8zs
cablelength short 133
channel-group 0 timeslots 1-24 speed 64
!
controller T1 4/1
framing esf
linecode b8zs
cablelength short 133
channel-group 0 timeslots 1-24 speed 64
06-11-2009 09:26 AM
is this provided by a telco ? if so ask them for a loop so u can validate if it is not their problem.
as far as I recall from my days playing with E1 and T1, BW i.e timeslots needs to be same at both ends. this used to be a common error alongside different encapsulation at both each side.
Sam
06-11-2009 09:37 AM
I totaly agree w/ ya ,,.
i had telco provide a loop from point a to z..
a router ---T1------NIU-------T1--------z router
I am able to see the loop facing to A router w/hclp encap and it look good , when the telco put the loop facing Z.. I do not see the loop .. I was told its the card and I did that . still can't see the loop from NIU to the router. change the NIU card and the cable going to s1/1 and 1/0 and still no loop , I created a hardloop plug and put on the card with HDLC config and still no loop on the router... that is the 1 million dollar question ,, why there is no loop on the interface if hardloop plug is in ?
Thanks for all your help
06-11-2009 09:48 AM
u could ask Telco to provide loop facing A , but this time as close to Z as possible. then you would know which segment is faulty.
06-11-2009 10:14 AM
May be faulty loop plug?
Also, when using such a thing, set clock internal.
To avoid slips, use "network-clock-participate" and "network-clock-select". But that is not your main problem.
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide