AI2524 Router Card User’s Manual
Page 13-8 August 1997
2524UM
Configure Frame Relay Switched Virtual CircuitsCurrently, access to Frame Relay networks is made through private
leased lines at speeds ranging from 56 kbps to 45 Mbps. Frame Relay
is a connection-oriented, packet-transfer mechanism that establishes
virtual circuits between endpoints.
Switched virtual circuits (SVCs) allow a cce ss t hrough a Frame Relay
network by setting up a path to the destination endpoints only when th
need arises and tearing down the path when it is no longer needed.
You must have these services before Frame Relay SVCs can operate:
zFrame Relay SVC support by the service provider—The service
provider's switch must be capable o f suppo r ting SVC operation.
zPhysical loop connection—A leased line or dedicated line must
exist between the router (DTE) and the local Frame Relay switch.
You must enable SVC operation at the interface level. Once it is en-
abled at the interface level, it is enabled on any subi nterface on that in-
terface. One signaling channel, DLCI 0, is set up for the interface, and
all SVCs are controlled from the physical interface.
To enable Frame Relay SVC service and set up SVCs, complete these
tasks. The subinterf ace tas ks a re no t requir ed, but of fer additi onal flex-
ibility for SVC configuration and operation. The LAPF tasks are not
required and not recommended unless you u n der st and t h oroughly the
impacts on your network.
zConfigure SVCs on a Physical Interface
zConfigure SVCs on a Subinterface (optional
zConfigure a Map Class
zConfigure a Map Group with E.164 or X.121 Addresses
zAssociate the Map Class with Static Protocol Address Maps
zConfigure LAPF Parameters
Configure SVCs on a Physical Interface
To enable SVC operation on a Frame Relay interface, perform these
tasks beginning in global configuration mode:
1. Specify the physical interface.
interface serial
number
2. Specify the interface IP address, if needed.
ip address
ip-address