debug frame-relay lmi

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

Syntax Description

interface name

(Optional) Name of interface.

Usage Guidelines

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

Examples

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 router's two permanent virtual circuits (PVCs).

The table below describes significant fields in the first line of the debug frame-relay lmi output.

Table 50: debug frame-relay lmi Command Field Descriptions

Field	Description
Serial1(out)	Indicates that the LMI request was sent out on the Serial1 interface.
StEnq	Command mode of message: StEnq---Status inquiry Status---Status reply
clock 20212760	System clock (in milliseconds). Useful for determining whether an appropriate amount of time has transpired between events.
myseq 206	Myseq counter maps to the router's CURRENT SEQ counter.
yourseen 136	Yourseen counter maps to the LAST RCVD SEQ counter of the switch.
DTE up	Line protocol up/down state for the DTE (user) port.

The table below describes significant fields in the third and fourth lines of debug frame-relay lmi output.

Table 51: debug frame-relay lmi Command Field Descriptions

Field	Description
RT IE 1	Value of the report type information element.
length 1	Length of the report type information element (in bytes).
type 1	Report type in RT IE.
KA IE 3	Value of the keepalive information element.
length 2	Length of the keepalive information element (in bytes).
yourseq 138	Yourseq counter maps to the CURRENT SEQ counter of the switch.
myseq 206	Myseq counter maps to the router's CURRENT SEQ counter.

The table below describes significant fields in the last line of debug frame-relay lmi output.

Table 52: debug frame-relay lmi Command Field Descriptions

Field	Description
PVC IE 0x7	Value of the permanent virtual circuit information element type.
length 0x6	Length of the PVC IE (in bytes).
dlci 401	DLCI decimal value for this PVC.
status 0	Status value. Possible values include the following: 0x00---Added/inactive 0x02---Added/active 0x04---Deleted 0x08---New/inactive 0x0a---New/active
bw 56000	Committed information rate in decimal, for the DLCI.