H3C S9500 Series Operation Manual page 253

Operation Manual – Routing Protocol
H3C S9500 Series Routing Switches
Restore the default tag for the OSPF to import
external routes
Configure the default type of external routes that
OSPF will import
Restore the default type of the external routes
imported by OSPF
By default, the type of imported route is type-2, the cost is 1 and the tag is 1 for a
imported route.
IV. Configuring the default interval and number for OSPF to import external
routes
OSPF can import the external routing information and broadcast it to the entire
autonomous system. Importing routes too often and importing too many external routes
at one time will greatly affect the performance of the device. Therefore it is necessary to
specify the default interval and number for the protocol to import external routes.
Perform the following configuration in OSPF view.
Table 4-8 Configure the default interval and number for OSPF to import external routes
Configure the default interval for OSPF to
import external routes
Restore the default interval for OSPF to import
external routes
Configure the upper limit to the routes that
OSPF imports at a time
Restore the default upper limit to the external
routes that can be imported at a time
By default, the interval for importing external routes is 1 second. The upper limit to the
external routes imported is 1000 at a time.
4.2.6 Configuring OSPF to Import Default Routes
By default, there are no default routes in a common OSPF area (either a backbone
area or a non-backbone area). Besides, the import-route command cannot be used to
import the default route.
Use the default-route-advertise command to generate and advertise a default route in
an OSPF route area. Note the following when you use this command:
Operation
Operation
4-11
Chapter 4 OSPF Configuration
Command
undo default tag
default type { 1 | 2 }
undo default type
Command
default interval seconds
undo default interval
default limit routes
undo default limit