3com 5500-ei pwr Installation Instruction

 

3-6 

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. 

 

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. 

Follow these steps to configure RIP route summarization: 

Enter system view 

— 

Enter RIP view 

rip  

— 

Enable RIP-2 automatic 
route summarization 

summary 

Required 

Enabled by default 

 

In some special cases, the router can receive a lot of host routes from the same segment, and these 

routes are of little help in route addressing but consume a lot of network resources. After a router is 

disabled from receiving host routes, it can refuse any incoming host route. 

Follow these steps to disable the router from receiving host routes: 

Enter system view 

— 

Enter RIP view 

rip  

— 

Disable the router from 
receiving host routes 

undo host-route 

Required 

By default, the router receives 
host routes. 

 

The route filtering function provided by a router enables you to configure inbound/outbound filter policy 

by specifying an ACL, address prefix list, or route policy to make RIP filter incoming/outgoing routes. 

Besides, you can configure RIP to receive only the RIP packets from a specific neighbor.