H3C S9500 Series Operation Manual page 236

Operation Manual – Routing Protocol
H3C S9500 Series Routing Switches
3.2.9 Configuring RIP-2 Route summary Function
The so-called route summary 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 the outside (i.e. other network). Route summary 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 route with natural mask, that is, it always sends routes in the route
summary form. RIP-2 supports subnet mask and classless interdomain routing. To
advertise all the subnet routes, the route summary function of RIP-2 can be disabled.
Perform the following configuration in RIP view.
Table 3-10 Enable/disable RIP-2 route summary function
Enable the route summary function of RIP-2
Disable the route summary function of RIP-2
By default, RIP-2 route summary is enabled.
3.2.10 Setting the RIP Preference
Each kind of routing protocol has its own preference, by which the routing policy will
select the optimal one from the routes of different protocols. The greater the preference
value is, the lower the preference becomes. The preference of RIP can be set
manually.
Perform the following configuration in RIP view.
Table 3-11 Set the RIP Preference
Set the RIP Preference
Restore the default value of RIP preference
By default, the preference of RIP is 100.
3.2.11 Specifying RIP Version of the Interface
RIP has two versions, RIP-1 and RIP-2. You can specify the version of the RIP packets
processed by the interface.
RIP-1 broadcasts the packets. RIP-2 can transmit packets by both broadcast and
multicast. By default, multicast is adopted for transmitting packets. In RIP-2, the
multicast address is 224.0.0.9. The advantage of transmitting packets in the multicast
Operation
Operation
3-8
Chapter 3 RIP Configuration
Command
summary
undo summary
Command
preference value
undo preference