3com WX3000 Manuel D’Utilisation

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3-7 
 
The filter-policy import command filters the RIP routes received from neighbors, and the routes 
being filtered out will neither be added to the routing table nor be advertised to any neighbors. 
The  filter-policy export command filters all the routes to be advertised, including the routes 
redistributed with the import-route command and routes learned from neighbors. 
You can also use the filter-policy export command to filter outgoing routes redistributed from a 
specified routing protocol. 
 
Setting RIP preference 
Follow these steps to set RIP preference: 
To do... 
Use the command... 
Remarks 
Enter system view 
system-view 
— 
Enter RIP view 
rip  
— 
Set the RIP preference 
preference value 
Required 
100 by default 
 
Configuring RIP to redistribute routes from another protocol 
Follow these steps to configure RIP to import routes from another protocol: 
To do... 
Use the command... 
Remarks 
Enter system view 
system-view 
— 
Enter RIP view 
rip  
— 
Configure a default cost for 
an incoming route 
default cost value 
Optional 
1 by default 
Configure RIP to 
redistribute routes from 
another protocol 
import-route protocol 
process-id ] [ cost value 
route-policy 
route-policy-name ]* 
Required 
By default, RIP does not redistribute 
any route from other protocols. 
 
RIP Network Adjustment and Optimization 
In some special network environments, some RIP features need to be configured and RIP network 
performance needs to be adjusted and optimized. By performing the configuration mentioned in this 
section, the following can be implemented: 
Changing the convergence speed of RIP network by adjusting RIP timers; 
Avoiding routing loops by configuring split horizon; 
Packet validation in network environments with high security requirements, and 
Configuring RIP to unicast RIP messages on interfaces with special requirements.