3Com 3032 Configuration Manual page 423

Configuring RIP
Horizontal
Segmentation on the
Interface
Configuring Route
Import for RIP
Specifying Default
Route Metric Value for
RIP
RIP is a Distance-Vector algorithm routing protocol. It uses the split-horizon
algorithm to avoid loop routes. Split-horizon means that routes received at a
certain interface are not sent to the same interface. If correct transmission of
routes is more important than efficiency, then split-horizon should be disabled.
Disabling split-horizon mechanism is not effective on point-to-point connection
links.
Perform the following configurations in interface view.
Table 478 Configure RIP Horizontal Segmentation on the Interface
Operation
Configure RIP horizontal segmentation on
the interface
Prohibit the interface from using
split-horizon when sending RIP packets.
By default, the interface use split-horizon when sending RIP packets.
RIP allows importing the routes learned from other protocols.
Perform the following configurations in RIP view.
Table 479 Configure Route Import for RIP
Operation
Configure route import for RIP
Cancel route distribution for RIP
By default, RIP does not import routes from other domains into the routing table.
The protocol attribute specifies the source routing domain that can be imported.
At present RIP can import routes domain such as Connected, Static, OSPF,
OSPF-ASE, and BGP.
See"Configure Route Import" in "Configuration of IP Routing Policy" for the
details of importing routes.
The command is used to import routes of other routing protocols.
import-route
If is not followed by the value of a routing metric, then the
import-route
parameter value of
default-med
distributing other routing protocols.
Perform the following configurations in RIP view.
Table 480 Specify a Default Route Metric Value for RIP
Operation
Specify default route metric value for RIP
Restore the default route metric value for
RIP
By default, the default route metric for RIP is 16
Command
rip split-horizon
undo rip split-horizon
Command
import-route protocol [ cost cost ] [
route-policy policy-name ]
undo import-route protocol
command is set as the metric value when
Command
default-cost cost
undo default-cost
Configure RIP 419