3Com Switch 7700 Configuration Manual page 110

102 C 5: IP R
HAPTER OUTING
P O
ROTOCOL PERATION
Configuring the Default Cost for the Imported Route
When you use the import-route command to import the routes of other
protocols, you can specify their cost. If you do not specify the cost of the imported
route, RIP will set the cost to the default cost, specified by the default cost
parameter.
Perform the following configurations in RIP view.
Table 18 Configuring the Default Cost for the Imported Route
Operation
Configure default cost for the imported route default cost value
Restore the default cost of the imported
route.
By default, the cost value for the RIP imported route is 1.
Setting the RIP Preference
Each routing protocol has its own preference by which the routing policy selects
the optimal one from the routes of different protocols. The greater the preference
value, the lower the preference. The preference of RIP can be set manually.
Perform the following configurations in RIP view.
Table 19 Setting the RIP Preference
Operation
Set the RIP Preference
Restore the default value of RIP preference
By default, the preference of RIP is 100.
Setting Additional Routing Metrics
The additional routing metric, is the input or output routing metric added to a RIP
route. It does not change the metric value of the route in the routing table, but
adds a specified metric value when the interface receives or sends a route.
Perform the following configuration in VLAN interface view.
Table 20 Setting Additional Routing Metric
Operation
Set the additional routing metric of the route
when the interface receives an RIP packet
Disable the additional routing metric of the
route when the interface receives an RIP
packet
Set the additional routing metric of the route
when the interface sends an RIP packet
Disable the additional routing metric of the
route when the interface sends an RIP packet
By default, the additional routing metric added to the route when RIP sends the
packet is 1. The additional routing metric when RIP receives the packet is 0.
Command
undo default cost
Command
preference value
undo preference
Command
rip metricin value
undo rip metricin
ip metricout value
undo rip metricout