試験640-802 トピック1 問題611 スレッド

Based on the output of the command "show frame-relay map", we know that DLCI mapped to the
router S-AMER is 196. (.3 In the above network topology, the complete layer3 IP address
is172.30.0.3)
Frame-relay map: The mapping command "Frame-relay map" can statically create a mapping
reaching the remote protocol address.
The format is :
frame-relay map protocol protocol-address dlci [ broadcast ][ ietf | cisco ]
Configuring a static Frame Relay map is optional unless you are using subinterfaces. The Frame
Relay map will map a Layer 3 address to a local DLCI. This step is optional because inverse-arp
will automatically perform this map for you.
Syntax for frame-relay map is:
frame-relay map protocol address dlci [broadcast] [cisco | ietf]
The broadcast option allows packets, such as RIP updates to be forwarded across the PVC. If you
are not using the broadcast option, you need to specify the neighbor to forward unicast packet
using neighbor command.
neighbor a.b.c.d
Specify RIP neighbor. When a neighbor doesn't understand multicast, this command is used to specify neighbors. In some cases, not all routers will be able to understand multicasting, where packets are sent to a network or a group of addresses. In a situation where a neighbor cannot process multicast packets, it is necessary to establish a direct link between routers. The neighbor command allows the network administrator to specify a router as a RIP neighbor. The no neighbor
a.b.c.d command will disable the RIP neighbor.