AIS AI2524 user manual Configuring LMI Autosense, Explicitly Configure the LMI, Set the LMI Type

AI2524 Router Card User’s Manual

The router decodes the reply and configures itself automatically. If more than one reply is received, the router configures itself according to the most recent reply, accommodating intelligent switches that can handle multiple formats simultaneously.

Using an intelligent retry scheme, LMI autosense attempts to deter mine the LMI type every N391 interval if initially unsuccessful. De- fault is 60 seconds, which is 6 keep exchanges at 10 seconds each.

To make the typically transparent LMI autosense process visible to the user, turn on "debug frame lmi.” Every N391 interval, the user will se three rapid status queries coming from the serial interface.

Configuring LMI Autosense

No configuration options are provided. You can turn off LMI au tosense by explicitly configuring an LMI type. When the LMI type is written into NVRAM, the next time the router powers up, LMI au tosense is inactive.

Explicitly Configure the LMI

If you want to configure the LMI and thus deactivate LMI autosense, complete the tasks. The tasks in the first two sections are required if you choose to configure the LMI.

zSet the LMI Typ

zSet the LMI Keepalive Interval

zSet the LMI Polling and Timer Intervals

Set the LMI Type

If the router or access server is attached to a public data network (PDN), the LMI type must match the type used on the public network. Otherwise, the LMI type can be set to suit the needs of your privat Frame Relay network.

In interface configuration mode, set one of three types of LMIs—

ANSI T1.617 Annex D, Cisco, or ITU-T Q.933 Annex A:

1.Set the LMI type.

frame-relay lmi-type {ansi cisco q933a}

2.Write the LMI type to NVRAM. Use the command form that is appropriate to your router platform.

copy running-config destination

Page 13-6	August 1997
	2524UM