3com WX3000 Manuel D’Utilisation

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3-5 
Set the preference of RIP to change the preference order of routing protocols. This order makes 
sense when more than one route to the same destination is discovered by multiple routing 
protocols. 
Redistribute external routes in an environment with multiple routing protocols. 
Configuration Prerequisites 
Before configuring RIP route control, perform the following tasks:  
Configuring network layer addresses of interfaces so that adjacent nodes are reachable to each 
other at the network layer 
Configuring basic RIP functions 
Configuring RIP Route Control 
Setting the additional routing metrics of an interface 
Additional metric is the metric added to the original metrics of RIP routes on an interface. It does not 
directly change the metric value of a RIP route in the routing table of a router, but will be added to 
incoming or outgoing RIP routes on the interface. 
Follow these steps to set additional routing metric: 
To do... 
Use the command... 
Remarks 
Enter system view 
system-view 
— 
Enter interface view  
interface interface-type interface-number 
— 
Set the additional routing 
metric to be added for 
incoming RIP routes on this 
interface 
rip metricin value 
Optional 
0 by default 
Set the additional routing 
metric to be added for 
outgoing RIP routes on this 
interface 
rip metricout value 
Optional 
1 by default 
 
 
The rip metricout command takes effect only on the RIP routes learnt by the router and the RIP routes 
generated by the router itself, but the command is invalid for any route imported to RIP from other 
routing protocols. 
 
Configuring RIP route summarization 
Rip route summarization means that when the router advertises RIP updates, different subnet routes in 
the same natural network segment can be aggregated into one route with a natural mask for 
transmission to another network segment. This function is used to reduce the routing traffic on the 
network as well as the size of the routing table. 
When it is necessary to advertise RIP route updates in a subnet, disable the route summarization for 
RIP-2.