Con®guring Frame Relay Interfaces

 

multicast-emulation

Disables multicast emulation on each active VC. The default setting for this

feature is enabled. If you disable this feature, you are required to add

protocol static address maps.

Some protocols, such as IPX RIP, will not function on the Frame Relay

interface if multicast-emulation is disabled. The protocol-broadcast feature

also requires multicast-emulation in order to function properly. For more

information, see ªMulticast Emulation and Protocol Broadcastº on page 394.

 

no-pvc

 

Controls whether the interface is considered active or inactive. If no-pvc is

 

disabled, the presence of active PVCs on the interface does not affect

 

whether the Frame Relay interface is considered active or inactive.

 

notify-fecn-source

 

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

 

which the router received a packet with the FECN bit set. See ªCircuit

 

Congestionº on page 399 for more information.

 

orphan-circuits

Prohibits the use of all non-con®gured PVC orphan circuits at the interface.

The default setting for orphan circuits is enabled. Disabling orphan circuits

adds a measure of security to your network by preventing unauthorized

entry from a non-con®gured circuit. However, if you disable orphan circuits,

you are required to add PVCs that will be used on the interface.

 

protocol-broadcast

 

Prohibits protocols such as IP RIP from functioning over the Frame Relay

 

interface. For more information, see ªMulticast Emulation and Protocol

 

Broadcastº on page 394. The default setting for this feature is enabled.

switched-virtual-circuits

Prohibits the use of SVCs.

 

throttle-transmit-on-fecn

 

Prohibits the device from throttling down the transmission of packets in

 

response to a packet with a FECN bit set on. The default is disabled. See

 

ªCircuit Congestionº on page 399 for more information.

Enable

Use the enable command to enable Frame Relay features.

Syntax:

 

enable

cir-monitor

 

cllm

 

compression

 

congestion-monitor

 

dn-length-®eld

 

encryption

 

lmi

 

lower-dtr

 

multicast-emulation

Chapter 31. Con®guring and Monitoring Frame Relay Interfaces 415

Page 451
Image 451
IBM SC30-3681-08 manual Multicast-emulation, No-pvc, Notify-fecn-source, Orphan-circuits, Protocol-broadcast