01-11-2006 02:07 PM - edited 03-03-2019 11:26 AM
Currently I have a 3600 series router and a 2811 that are I'm trying to connect via two bonded T1 Lines using MLPPP. The interfaces are up but the proctol remains down. Line Coding, channel groups and framing have been defined. What is the next step to get the protocl to come up. Any help would be appreciated
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01-11-2006 04:59 PM
Hi Scott,
Could you advise how you fixed the problem ? Was it the cable ?
Paresh.
01-11-2006 02:12 PM
Hi,
It might help if we could see your configs..
Paresh.
01-11-2006 02:42 PM
01-11-2006 03:07 PM
At first glance, your configs look fine..
Could you pls also post the output of the following
sh int serial (for all your serials)
sh interfaces multilink
sh ppp multilink
The following would also be handy:
debug ppp negotiation
debug ppp multilink events
Thanks,
Paresh
01-11-2006 03:37 PM
01-11-2006 03:53 PM
Both your serial interfaces are down so MPPP is not likely to come up anytime soon...
COuld you change your T1 controller configs to match the following:
2811:
====
controller T1 0/0/0
framing esf
clock source internal
linecode b8zs
channel-group 1 timeslots 1-24 speed 64
!
controller T1 0/0/1
framing esf
clock source internal
linecode b8zs
channel-group 1 timeslots 1-24 speed 64
3600:
====
controller T1 0/0
framing esf
clock source line primary
linecode b8zs
channel-group 1 timeslots 1-24 speed 64
!
controller T1 0/1
framing esf
clock source line secondary
linecode b8zs
channel-group 1 timeslots 1-24 speed 64
Try that out and see if the line protocol on your serials comes up..
Hope that helps,
Paresh.
01-11-2006 04:10 PM
Thanks for your help with this matter. I tired to do your suggestion and when I type in clock soure line secondary its an unregonized command. I also swapped out the clock rate on both controllers to see if that would help and there is still no secondary. Both serial interfaces are still down. Do you have any other suggestions. Thanks again
01-11-2006 04:14 PM
Actually, I may have been premature with that last post..
Could you remove the 'clock source' commands totally from the controllers on the 3600 and then try again...(leave the clock source internal on the 2811s)
Also, are you absolutely sure that you cross-over cables are okay ? What do the LEDs on the displays show ?
Paresh.
01-11-2006 04:23 PM
Hello,
what are the provider settings for the T1? You have CRC errors on th line, which tells that there was some input, but "not understood".
Are you sure the framing is ESF and the line code is B8CS? I assume the problem to be related to these settings.
Try shutting down the interface, change b8cs to ami and "no shut" on the interface.
In case this doesn´t work you could also change the framing.
Hope this helps! Please rate all posts.
Martin
01-11-2006 04:59 PM
Hi Scott,
Could you advise how you fixed the problem ? Was it the cable ?
Paresh.
01-11-2006 06:19 PM
I wanted to thank you for your help. The problem was that clock speed was not set on the 3640 router. Once I set the clock speed it worked. Bonehead move on my part. Thanks again
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