VWIC-1MFT-E1 Router Back 2 Back connection

[neumayer]

Hello,

im trying to get a back to back connection over 2 VWIC-1MFT-E1 between 2 routers.

Cabling is correct. I have CD on both ends. One end is set to clock source line the other one to intenal.

It controllers stay down and i see CRC's indicating clocking is not working.

Is there any limitation clocking a line from a VWIC-1MFT-E1. Has anyone tryed this?

one end:

controller E1 0/0/0

clock source internal

channel-group 1 timeslots 1-31

other end:

controller E1 0/0/0

channel-group 1 timeslots 1-31

!

someone an idea???

!

[paolo bevilacqua]

Hi,

If these are ISR routers, you also need "network-clock-participate" and "network-clock-select" on both routers.

Else specify what routers is that and send "show controllers e1".

Hope this helps, please rate post if it does!

[neumayer]

Hello,

im on a 1841. So there is no "network-clock-participate" command.

E1 0/0/0 is down.

Applique type is Channelized E1 - balanced

Receiver has remote alarm.

alarm-trigger is not set

Version info Firmware: 20050620, FPGA: 16, spm_count = 0

Framing is CRC4, Line Code is HDB3, Clock Source is Internal.

CRC Threshold is 320. Reported from firmware is 320.

Data in current interval (824 seconds elapsed):

0 Line Code Violations, 0 Path Code Violations

yourname#sh controllers E1 0/0/0

E1 0/0/0 is down.

Applique type is Channelized E1 - balanced

Receiver has loss of frame.

alarm-trigger is not set

Version info Firmware: 20050620, FPGA: 16, spm_count = 0

Framing is CRC4, Line Code is HDB3, Clock Source is Internal.

CRC Threshold is 320. Reported from firmware is 320.

Data in current interval (162 seconds elapsed):

420030 Line Code Violations, 0 Path Code Violations

[rgodden]

what is the length of the cable between the routers, what are the cable pin outs, shielded or unshielded cable ?