3Com 3031 Command Reference Manual page 558

558 C 6: R P
HAPTER OUTING
rip version
rip work
ROTOCOL
Normally, split horizon is necessary for reducing route loop. Only in some special
cases, split horizon should be disabled to ensure the correct execution of
protocols.
Example
Specify the interface serial1/0/0 not to use split horizon when processing RIP
packets.
[3Com] interface serial1/0/0
[3Com-serial1/0/0] undo rip split-horizon
Syntax
rip version { 1| { 2 [ broadcast | multicast ] } }
undo rip version
View
Interface view
Parameter
1: Interface version is RIP-1.
2: Interface version is RIP-2. By default, multicast is used.
broadcast: Transmission mode of RIP-2 packet is broadcast.
multicast: Transmission mode of RIP-2 packet is multicast.
Description
Using the rip version command, you can configure the version of RIP packets on
an interface. Using the undo rip version command, you can restore the default
value of RIP packet version on the interface.
By default, the interface RIP version is RIP-1.
RIP-2 has 2 transmission modes: broadcast and multicast. Multicast is the default
mode. The multicast address in RIP-2 is 224.0.0.9. One of the advantages of
multicast mode is that the hosts that do not run RIP in this network will not receive
the broadcast packets. Additionally, hosts running RIP-1 will be prevented from
receiving and processing the RIP-2 routes with subnet masks.
When the interface specifies the use of RIP-1, only RIP-1 and RIP-2 broadcast
packets will be received. In this case, RIP-2 multicast packets will be rejected.
When the interface is specified to use RIP-2 multicast, only RIP-2 multicast packets
and RIP-2 broadcast packets will be received. In this case, RIP-1 packets will be
rejected.
Example
Configure the interface serial1/0/0 as RIP-2 broadcast mode.
[3Com] interface serial1/0/0
[3Com-serial1/0/0] rip version 2 broadcast
Syntax
rip work
undo rip work