3Com 10014299 manual Distribution for RIP, Configure filtering route information received by RIP

420CHAPTER 28: CONFIGURING RIP

Since the route metric of route import cannot be reverted, the dynamic route information may be significantly distorted. Therefore, route import is done cautiously to prevent loss of RIP protocol's performance.

Specifying Additional The additional routing metric here is to add input or output metric for routes Route Metric Values for obtained for RIP. The rip metricin will add a designated metric value while

RIP receiving routes on the interface, then add this route metric value in the routing table. The rip metricout does not directly change the route metric value in the routing table, but will add a designated metric value when sending routes on the interface.

Perform the following configurations in interface view.

Table 481 Specify Additional Route Metric Value for RIP

Operation	Command
Specify additional route metric value	rip metricin metric
received for RIP
Restore the additional route metric value	undo rip metricin
received for RIP to its default value
Specify additional route metric value being	rip metricout metric
advertised for RIP
Restore the additional route metric value	undo rip metricout
being advertised for RIP to its default value

By default, the additional route metric value received for RIP is 0 but ranges from 0 to 16. Additional route metric value being advertised for RIP is 1, ranging from 1 to 16.

Setting Route Preference Each routing protocol has its own preference that decides which routing protocol is used to select the best route by IP route strategy. The greater the value is, the lower the preference. RIP preference can be set manually.

Perform the following configurations in RIP view.

Table 482 Set Route Preference

Operation	Command
Set the RIP route preference	preference value
Restore the default value of RIP route	undo preference
preference

By default, the RIP route preference is 100.

Configuring Route Perform the following configurations in RIP view.

Distribution for RIP

Configure filtering route information received by RIP.

Table 483 Filter Routing Information Received by RIP

Operation	Command
Filter routing information received from a	filter-policy gateway
specified gateway	prefix-list-name import