IBM SC30-3681-08 manual Occurs between the router and the FR switch, Feature is enabled

Con®guring Frame Relay Interfaces

modem dials a stored number to the backup site. When the primary interface is restored, the alternate interface is disabled, DTR is lowered, and the modem hangs up the dial connection.

The following cable types are supported:

EIA 232 (RS-232)

V.35

V.36

The default setting is disable lower-dtr.

multicast-emulation

Enables multicast emulation. This allows a multicast/broadcast frame to be

transmitted on each active VC. Protocols such as ARP, IPX RIP, and IP RIP

require multicast emulation to be enabled to function correctly over a Frame

Relay interface. For more information, see ªMulticast Emulation and

Protocol Broadcastº on page 394. The default for this parameter is enabled.

no-pvc

Controls whether the interface is considered active or inactive. When this

feature is enabled, the Frame Relay interface becomes inactive when there

are no active PVCs on the interface. If at least one PVC is active, the

Frame Relay interface becomes active when a successful LMI exchange

occurs between the router and the FR switch.

notify-fecn-source

Enables setting a BECN bit on the ®rst packet destined to a device from

which the router received a packet with the FECN bit set. Use this

parameter to enhance the congestion control mechanisms of the device in a

network whether the FR switches do not themselves set BECN but set

FECN. See ªCircuit Congestionº on page 399 for more information.

orphan-circuits

Enables the use of all non-con®gured orphan circuits. The default for this

feature is enabled. See ªOrphan Permanent Virtual Circuit CIRº on

page 397 for information about the default CIR values.

protocol-broadcast

Allows protocols such as IP RIP to function correctly over the Frame Relay

interface. The multicast emulation feature must be enabled for the

protocol-broadcast feature to function correctly. The default setting for this

feature is enabled.

switched-virtual-circuits

Allows the use of SVCs and prompts you for the local SVC network

number, the numbering plan, whether call-ins from orphan SVCs are

allowed, the number of dial-out retries performed for all SVCs on the

interface, and whether network emulation mode, which is used in

back-to-back (for example, dial circuit) router con®gurations, is required.

You can also use the enable switched-virtual-circuits command to

change con®gured SVC interface parameters if SVCs have already been

enabled.

Example:

FR 1 Config> enable switched

Local party number []? 4141990

Local party number numbering plan (E.164 or X.121) [E.164]?

418MRS V3.2 Software User's Guide