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Link E1 between Cisco 7206 down

I have a link E1 between routers Cisco 7206, on the one side the Cisco 7206 has PA-MC-8E1-UNBAL card with BNC conectors and on the other one PA-MC-8E1+ card with RJ48 conectors. This E1 is part of a multilink ppp.

The configurations and results are:

*****************************

interface Serial2/1

description Enl_Uio_Gye4

no ip address

ip accounting output-packets

encapsulation ppp

no ip mroute-cache

timeslot 1-31

serial restart_delay 0

fair-queue

ppp multilink

ppp multilink group 10

7206#show interface serial 2/1

Serial2/1 is up, line protocol is down

Hardware is 4ME1-UNBAL

Description: Enl_Uio_Gye4

MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec,

reliability 128/255, txload 1/255, rxload 1/255

Encapsulation PPP, LCP Listen, multilink Closed

Closed: CDPCP, crc 16, loopback not set

Restart-Delay is 0 secs

Last input 14:31:57, output 00:00:22, output hang never

Last clearing of "show interface" counters 3w4d

Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 1096

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 1158 kilobits/sec

5 minute input rate 0 bits/sec, 0 packets/sec

5 minute output rate 0 bits/sec, 0 packets/sec

343794192 packets input, 2549208985 bytes, 0 no buffer

Received 0 broadcasts, 0 runts, 4 giants, 0 throttles

213263195 input errors, 62610010 CRC, 0 frame, 1000 overrun, 0 ignored, 150

652185 abort

345064202 packets output, 2914045575 bytes, 0 underruns

0 output errors, 0 collisions, 2359 interface resets

0 output buffer failures, 0 output buffers swapped out

2533 carrier transitions

DCD up, BER inactive, NELR inactive, FELR inactive

*****************************

controller E1 2/1

framing NO-CRC4

channel-group 0 timeslots 1-31

description Uio_Gye4

!

interface Serial2/1:0

description Enl_Uio_Gye4

bandwidth 1544

no ip address

encapsulation ppp

ppp multilink

ppp multilink group 10

URD_7206#show interface serial2/1:0

Serial2/1:0 is up, line protocol is down

Hardware is PA-MC-8TE1 Plus

Description: Enl_Uio_Gye4

MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec,

reliability 128/255, txload 1/255, rxload 1/255

Encapsulation PPP, LCP Listen, multilink Closed

Closed: BACP, crc 16, loopback not set

Last input 17:39:06, output 00:00:09, output hang never

Last clearing of "show interface" counters 1d09h

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 1158 kilobits/sec

5 minute input rate 0 bits/sec, 0 packets/sec

5 minute output rate 0 bits/sec, 0 packets/sec

296 packets input, 7548 bytes, 0 no buffer

Received 0 broadcasts, 0 runts, 44 giants, 0 throttles

537995927 input errors, 152019559 CRC, 0 frame, 49 overrun, 0 ignored, 3859

73576 abort

13669 packets output, 502349 bytes, 0 underruns

0 output errors, 0 collisions, 0 interface resets

0 output buffer failures, 0 output buffers swapped out

22 carrier transitions no alarm present

Timeslot(s) Used:1-31, subrate: 64Kb/s, transmit delay is 0 flags

*****************************

How can I do to work this E1. Pls your help.

Thanks,

Wilson

3 REPLIES
Hall of Fame Super Gold

Re: Link E1 between Cisco 7206 down

Wilson

Would I be correct in assuming that this link used to work and then stopped working (rather than being a new install which is not working and has never worked)?

It looks to me like the E1 has a problem in the network. I would check with the provider and ask them to check the link.

For testing purposes you could take the E1 out of the multilink bundle and work with it as an isolated link. But I do not believe that the problem has anything to do with multilink.

HTH

Rick

Community Member

Re: Link E1 between Cisco 7206 down

Thanks Rick.

This E1 is new and has never worked. I have others E1s but between PA-MC-8E1+ ports, these are working.

Also, I tested this link take out of the multilink but I get the same result.

The E1 provider tells me that all is ok.

Thanks,

Wilson

Hall of Fame Super Gold

Re: Link E1 between Cisco 7206 down

Wilson

With the number of packets sent and received I thought it might be an existing link:

343794192 packets input, 2549208985 bytes, 0 no buffer

Received 0 broadcasts, 0 runts, 4 giants, 0 throttles

213263195 input errors, 62610010 CRC, 0 frame, 1000 overrun, 0 ignored, 150

652185 abort

345064202 packets output, 2914045575 bytes, 0 underruns

If you look at the number of errors there is certainly something wrong. I am not clear whether the different card types is a problem. Perhaps someone with more experience can help with this.

Can you post the configuration of the controllers from both ends?

HTH

Rick

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