Avatar of JaysonJackson
JaysonJackson
Flag for United States of America asked on

Nortel to Cisco Wan Link

I have a nortel Router in one site runing LLC, IP and ospf. I need to put a cisco at the other end of the Wan link. I have verfied that the T1 is good by having 2 Cisco's at each end and 2 nortel routers on the ckt. when i mix the rotuers i have can not get the circuirt up and running. I have configured both ends with IP and the proper subnet.
nortel
IP 206.220.24.9 255.255.255.252
LLC
ospf
Cisco
Ip
206.220.24.10 255.255.255.252
enc PPP

I am not sure where to go from here.
Routers

Avatar of undefined
Last Comment
Les Moore

8/22/2022 - Mon
Les Moore

If you are using ppp encapsulation, on the Cisco side, try setting the serial interface mtu to 1492 to match the Nortel
JaysonJackson

ASKER
Tried setting the MTU to 1492 no line still down. I belive the LLC layer is not comming up and i am not sure why.
Don Johnston

It's been awhile since I worked with a Nortel router (actually, they were called Bay routers back then :-)). but I recall them having two serial encapsulations Standard (which was Bay's HDLC) and PPP. When we connected a Bay to a Cisco using serial links, we set the interfaces to PPP on both ends.

When Nortel acquired Bay, did they change the terminology and now they're refering to PPP as LLC?

-don
Experts Exchange is like having an extremely knowledgeable team sitting and waiting for your call. Couldn't do my job half as well as I do without it!
James Murphy
ASKER CERTIFIED SOLUTION
Les Moore

THIS SOLUTION ONLY AVAILABLE TO MEMBERS.
View this solution by signing up for a free trial.
Members can start a 7-Day free trial and enjoy unlimited access to the platform.
See Pricing Options
Start Free Trial
GET A PERSONALIZED SOLUTION
Ask your own question & get feedback from real experts
Find out why thousands trust the EE community with their toughest problems.
JaysonJackson

ASKER
This work with a little more research but this pointed me in the correct direction.
Les Moore

What was your final thing that made it work?