Command:

debug frame-relay lmi


Mode:

Router#


Syntax:

debug frame-relay lmi [interface name]

no debug frame-relay lmi [interface name]

Syntax Description:

                

interface name (Optional) The name of interface.

 

Command Description:

 

To display information on the local management interface (LMI) packets exchanged by the router and the Frame Relay service provider, use the debug frame-relay lmi privileged EXEC command. The no  form of this command disables debugging output.

 

You can use this command to determine whether the router and the Frame Relay switch are sending and receiving LMI packets properly.

 

Note: Because the debug frame-relay lmi command does not generate much output, you can use it at any time, even during periods of heavy traffic, without adversely affecting other users on the system.


Example:

The following is sample output from the debug frame-relay lmi command:The first four lines describe an LMI exchange. The first line describes the LMI request the router has sent to the switch. The second line describes the LMI reply the router has received from the switch. The third and fourth lines describe the response to this request from the switch. This LMI exchange is followed by two similar LMI exchanges. The last six lines consist of a full LMI status message that includes a description of the two permanent virtual circuits (PVCs) of the router.

 

Router# debug frame-relay lmi

Serial1(out): StEnq, clock 20212760, myseq 206, mineseen 205, yourseen 136, DTE up

Serial1(in): Status, clock 20212764, myseq 206

RT IE 1, length 1, type 1

KA IE 3, length 2, yourseq 138, myseq 206

Serial1(out): StEnq, clock 20222760, myseq 207, mineseen 206, yourseen 138, DTE up

Serial1(in): Status, clock 20222764, myseq 207

RT IE 1, length 1, type 1

KA IE 3, length 2, yourseq 140, myseq 207

Serial1(out): clock 20232760, myseq 208, mineseen 207, yourseen 140, line up

RT IE 1, length 1, type 1

KA IE 3, length 2, yourseq 142, myseq 208

Serial1(out): StEnq, clock 20252760, myseq 210, mineseen 209, yourseen 144, DTE up

Serial1(in): Status, clock 20252764,

RT IE 1, length 1, type 0

KA IE 3, length 2, yourseq 146, myseq 210

PVC IE 0x7, length 0x6, dlci 400, status 0, bw 56000

PVC IE 0x7, length 0x6, dlci 401, status 0, bw 56000


Misconceptions:

           None.


Related Commands:

            None. 


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