05-21-2008 05:30 AM - edited 03-03-2019 10:02 PM
Hi friends,
I have got an issue with bundling multilink with serial.
Here comes the Topology
7206-core router is connected to multiple 1700s & 1800s through multiple E1s.
All serials are binded to multilinks at Core router and 1700 or 1800s as well.
one of the client (1700) is having issues in binding with multilink
Troubleshooting done.
Changed the encaps to hdlc at both ends
result : working fine
changed encaps to PPP with out multilink
result : working fine.
when binding to multilink :
serial and multilink goes down.
Debug output :
May 21 17:02:48.304 IST: Se2/5:30 MLP: Request add link to bundle
May 21 17:02:48.304 IST: Se2/5:30 MLP: Adding link to bundle
May 21 17:02:48.304 IST: Se2/5:30 MLP: Bundle x.x.x.x.x in different multilink group
May 21 17:02:48.304 IST: Se2/5:30 MLP: Link not added to bundle
after seeing this debug out suspected E1 & multilnik mismatch issue.
changed E1 and binded to a new multilink at both sides.
Still same issue.
The media is MLLN.
IOS c1700-k9o3sy7-mz.123-1a.bin
Please guide.
05-21-2008 01:49 PM
Could you post your config?
05-23-2008 09:57 AM
hi
there is no much complecated configuration.It's as simple as below.
Core 7200
Controller E1 3/2
framing crc4
channel group 0 time-slots 1
interface serial 3/2:0
no ip address
encapsulation ppp
ppp multilink
ppp multilink group 1
interface multilink 1
ip address x.x.x.x x.x.x.x
ppp multilink
ppp multilink group 1
Customer
1700 - WIC2T
interface serial 0/1
no ip address
encaps ppp
ppp multilink
ppp multilink group 1
interface multilink 1
ip address x.x.x.x x.x.x.x
ppp multilink
ppp multilink group 1
circuit is a MLLN circuit.
any issues?
05-26-2008 09:31 PM
any guidance?
05-26-2008 10:37 PM
could you please change the framing
05-30-2008 01:16 AM
hi shivlu,
tried changing but still same.
anyway thanx and i managed it somehow
05-26-2008 11:07 PM
Well your config seems to fine and straightforward. This could be related to some software IOS thing. Just to narrow down the problem, try configuring the virtual-template and see if it works.
http://www.cisco.com/en/US/tech/tk713/tk507/technologies_configuration_example09186a0080093d69.shtml
HTH,
-amit singh
05-30-2008 01:11 AM
thanx amit,
It looks alike IOS bug only.I changed the router (1761) with 1841 router.and it started working with same WIC 2t card.We are about to upgrade /change IOS and see. I will come back to you later
Ps :- rated you 5 ;)
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