3com S7906E Manuel De Montage

 

1-8 

z 

Configure an IP address for each interface, and make sure all neighboring routers are reachable to 

each other. 

z 

Configure RIP basic functions 

An additional routing metric (hop count) can be added to the metric of an inbound or outbound RIP 

route. 

The outbound additional metric is added to the metric of a sent route, and the route’s metric in the 

routing table is not changed. 

The inbound additional metric is added to the metric of a received route before the route is added into 

the routing table, and the route’s metric is changed. If the sum of the additional metric and the original 

metric is greater than 16, the metric of the route will be 16. 

Follow these steps to configure additional routing metrics: 

Enter system view 

–– 

Enter interface view 

interface interface-type 
interface-number 

–– 

Define an inbound additional 
routing metric 

rip metricin [ route-policy 
route-policy-name ] value 

Optional 

0 by default 

Define an outbound additional 
routing metric 

rip metricout [ route-policy 
route-policy-name ] value 

Optional 

1 by default 

 

Route summarization means that subnets in a natural network are summarized into a natural network 

that is sent to other networks. This feature can reduce the size of routing tables. 

After route summarization, the smallest metric among all the summarized routes is used as the metric of 

the summary route.  

You can disable RIPv2 route automatic summarization if you want to advertise all subnet routes. 

Follow these steps to enable RIPv2 route automatic summarization:  

Enter system view 

–– 

Enter RIP view 

rip [ process-id ] 
[ vpn-instance 
vpn-instance-name ] 

–– 

Enable RIPv2 automatic route 
summarization 

summary 

Optional 

Enabled by default 

If the subnet routes in the 
routing table are not 
consecutive, disable automatic 
route summarization to avoid 
black hole routing.