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RIP 229
In addition, the rip work command is functionally equivalent to both the rip input
and
rip output commands.
By default, all interfaces except loopback interfaces both receive and transmit RIP
update packets.
Disabling Host Route
In some cases, the router can receive many host routes from the same segment, and
these routes are of little help in route addressing but consume a lot of network
resources. Routers can be configured to reject host routes by using the
undo
host-route
command.
Perform the following configurations in RIP View.
By default, the router receives the host route.
Enabling RIP-2 Route Aggregation
Route aggregation means that different subnet routes in the same natural network
can be aggregated into one natural mask route for transmission when they are sent
to other networks. Route aggregation can be performed to reduce the routing traffic
on the network as well as to reduce the size of the routing table.
RIP-1 only sends the routes with natural mask, that is, it always sends routes in the
route aggregation form.
RIP-2 supports subnet mask and classless inter-domain routing. To advertise all the
subnet routes, the route aggregation function of RIP-2 can be disabled.
Perform the following configurations in RIP View.
By default, RIP-2 uses the route aggregation function.
Setting RIP-2 Packet Authentication
RIP-1 does not support packet authentication. However, you can configure packet
authentication on RIP-2 interfaces.
RIP-2 supports two authentication modes:
■ Simple authentication—This mode does not ensure security. The key is not
encrypted and can be seen in a network trace, so simple authentication should not
be applied when there are high security requirements.
■ MD5 authentication—This mode uses two packet formats. One format follows
RFC1723, and the other follows RFC2082.
Table 209 Disabling Host Route
Operation Command
Enable receiving host route host-route
Disable receiving host route undo host-route
Table 210 Enabling Route Aggregation
Operation Command
Activate the automatic aggregation function of RIP-2 summary
Disable the automatic aggregation function of RIP-2 undo summary