OSPF Configuration 145
router to the ASBR and the cost from the ASBR to the destination are of the same
size, then the cost of the router to the ASBR will also be included.
Perform the following configuration in OSPF View.
By default, OSPF does not import the routing information of other protocols. The
default type of the imported route is 2, cost is 1 and the tag is 1.
The
protocol
variable specifies a source routing protocol that can be imported.
This can be Direct, Static and RIP.
3Com recommends that you configure the route type, cost and tag together in
one command. If you do not, note that a new configuration overwrites the
previous configuration.
Configuring Parameters for OSPF to Import External routes
When the OSPF imports the routing information discovered by other routing
protocols in the autonomous system, some additional parameters need to be
configured, such as default route cost and default tag of route distribution, etc.
Route ID can be used to identify the protocol-related information.
Perform the following configuration in OSPF View.
Tab le 151 Configuring OSPF to Import Routes of Other Protocols
Operation Command
Configure OSPF to import routes of
other protocols
import-route
protocol
[ cost
value
|
type
value
| tag
value
| route-policy
route_policy_name
]*
Cancel importing routing
information of other protocols
undo import-route
protocol
Tab le 152 Configuring Parameters for OSPF to Import External routes
Operation Command
Configure the minimum interval for OSPF to import the
external routes
default interval
seconds
Restore the default value of the minimum interval for
OSPF to import the external routes
undo default interval
Configure the upper limit to the routes that OSPF import
each time
default limit
routes
Restore the default upper limit to the external routes
that can be imported at a time
undo default limit
Configure the default cost for the OSPF to import
external routes
default cost
value
Restore the default cost for the OSPF to import external
routes
undo default cost
Configure the default tag for the OSPF to import
external routes
default tag
tag
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