UP/DOWN SITUATION. PLS HELP

Unanswered Question
Jun 11th, 2009

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

I have this problem too.
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cisco steps Thu, 06/11/2009 - 07:25

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

cisco steps Thu, 06/11/2009 - 07:28

I forgot to mention that this is dual card ..and both 1/0 and 1/1 shows UP/DOWN

Thanks

Richard Burts Thu, 06/11/2009 - 07:50

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

cisco_lad2004 Thu, 06/11/2009 - 08:38

scan the config, it should be right a top where controllers lines are showing.

Sam

John Blakley Thu, 06/11/2009 - 08:42

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

cisco steps Thu, 06/11/2009 - 08:53

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

cisco steps Thu, 06/11/2009 - 09:21

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

cisco_lad2004 Thu, 06/11/2009 - 09:26

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

cisco steps Thu, 06/11/2009 - 09:37

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

cisco_lad2004 Thu, 06/11/2009 - 09:48

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.

Paolo Bevilacqua Thu, 06/11/2009 - 10:14

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.

cisco steps Thu, 06/11/2009 - 10:47

loop plug is good I tested on the NIU to provide loop facing the other direction ..

Now I was going to change the slot from 1 to 4 I could not configure slot 4, when I do :

(config)#controller t1 4/1

% Invalid input detected at '^' marker.

Paolo Bevilacqua Thu, 06/11/2009 - 11:05

When using loop plug, set clock internal and check show controller again.

Reseat modulse and check "show diag" when HW is not recognized.

Note on ISR routers, need to turn off router when swapping modules.

cisco steps Thu, 06/11/2009 - 11:30

you mean like this

config t #

controller T1 1/0

framing esf

linecode b8zs

cablelength short 133

channel-group 0 timeslots 1-24 speed 64

clock internal

can you pls show me the steps

Thanks

cisco steps Thu, 06/11/2009 - 12:20

I did set the clock to internal . now it shows in sho controllers

#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 Internal.

====I did reseat the controller 1/0

====I do have loop plug on 1/0

still no loop

encap is hdlc

still no loop

pompeychimes Thu, 06/11/2009 - 19:36

Any extended wiring involved. If so are you pinned out correctly for a T1 (1,2,4,5)

cisco steps Fri, 06/12/2009 - 10:14

good news...

since there was no hard loop in the wic. I changed the slot from 1/1 and 1/0 to 4/0 and 4/1 now I have up/up .. Thanks all for your support and feed back, I will go back and rate every one that contributed there time,

Thanks all

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