Frame-relay link

[arvindgooding2000]

hey

im having a little issue with a cisco router and frame. the heard office router is a 3600 series and the branch router is a 1751. i have about 8 locations using the same configs and same routers. all are working good except for one. we are phasing out their current motorolla routers.

scenario. the branch has a motorolla router at prsent connected a newbridge for the WAN. when i cut over to the cisco the link is inactive. and remains in active. tried different routers and IOS but same thing. put back the motorolla and link comes up fine.. im looking for the config but dont have it at pesent but here is basically what i did

 

[lgarner]

Try checking the LMI. Also, some providers use ANSI LMI, which you need to specify in the interface config.

 

[jeter]

test with the carrier circuit group. Loop up the circuit and they should see it. This means the path through the frame is good. ALso verify DLCI, LMI, and bandwidth. If it is a fractional T1 insert the following as an example
"service module T1 time-slot 1-8" on the serial interface.
Good Luck

“Reserve your right to think, for even to think wrongly is better than not to think at all”

Fisher CCNP,CCNA Network+

 

[robertjo24]

I know this may sound a little simplistic, but are you certain that the interface on the Cisco is up, (issued a no shut command on the serial interface)?
Try inserting a loop back plug into the router’s CSU/DSU and see if the interface goes up. If utilizing integrated CSU/DSU cards in the routers (i.e. WIC-1DSU-T1), inserting a loop back plug will cause the CD light to go green, and the alarm light will go out after 10 -15 seconds. Then look at the interface in the CLI, the indication on the interface should be that the interface is up and the line protocol is up (looped).
I like using a loop back plug over the loop back button on the CSU/DSU because it tests the functionality of the card out to the physical layer (plug connection).

 

[Jynxx]

Definately check LMI. Unless you specified it explicitly on the Cisco router, it is trying to use Cisco LMI. If they are configured for ANSI (aka AnnexD), or Q933a, then you have to specify it as such on the router.

 

[jeter]

Has this been resolved? All the threads here are very helpful.

“Reserve your right to think, for even to think wrongly is better than not to think at all”

Fisher CCNP,CCNA Network+