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This section describes three Frame Relay scenarios:

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To configure a second Frame Relay line for disaster recovery, see Using 
Enterprise OS Software.

These scenarios require your Frame Relay switch to support the Local 
Management Interface (LMI) Protocol. If your switch does not support 
LMI, see Using Enterprise OS Software for configuration procedures.

Obtain DLCIs for each remote site from the Frame Relay service provider. 
A DLCI identifies a circuit from the bridge/router to a destination. The 
destination uses a different DLCI for the circuit to the main site. Because a 
DLCI is known only by one end of the link, DLCIs may not be unique.

In the following example, the DLCI from site A to site C is @100. 
Coincidentally, the DLCI from site C to site A is also @100. Although the 
numbers are the same, there is no relationship between them. The DLCI 
from site A to site B is @90, but the DLCI from site B to site A is @80.