الموضوع: [سؤال] : Frame Relay Broadcast vs NBMA
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قديم 10-25-2012, 03:50 AM   #8
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افتراضي رد: Frame Relay Broadcast vs NBMA

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Similarly, the frame-relay map protocol protocol-address dlci [broadcast] command can be used to specifically assign DLCIs to the multipoint subinterfaces. The optional broadcast keyword in the frame-relay map command is required if broadcast and multicast traffic are to be sent over the specified dlci. Without the broadcast option, dynamic routing protocols such as EIGRP, OSPF and RIPv2 would not be able to advertise multicast route updates over the specified dlci. In comparison with the frame-relay interface-dlci command, the frame-relay map command performs static addressing mapping and it disables Inverse ARP on the specified dlci. In addition, the frame-relay map command is supported on the physical interface and the frame-relay map command should be used when the far end Frame Relay device does not support Inverse ARP.
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NOTE
When a multipoint subinterface is created on a physical interface, the DLCIs of virtual circuits are always assigned to the physical interface until they are specifically assigned to the subinterfaces using the frame-relay interface-dlci dlcicommand or the frame-relay map protocol protocol-address dlci [broadcast] command.
On multipoint subinterfaces, either dynamic or static mapping can be used, depending on the network
configurations
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