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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 “Multicast Emulation and
Protocol Broadcast” 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 first 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 “Circuit Congestion” on page 399 for more information.
orphan-circuits
Enables the use of all non-configured orphan circuits. The default for this
feature is enabled. See “Orphan Permanent Virtual Circuit CIR” 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 configurations, is required.
You can also use the enable switched-virtual-circuits command to
change configured 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]?
Configuring Frame Relay Interfaces
418
MRS V3.2 Software User’s Guide
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