3Com 5500-SI Configuration Manual page 250

250 C 16: IP R
HAPTER OUTING
P O
ROTOCOL PERATION
Table 242 Configuring Parameters for OSPF to Import External routes (continued)
Operation
Restore the default upper limit to the external routes that
can be imported at a time
Configure the default cost for the OSPF to import external
routes
Restore the default cost for the OSPF to import external
routes
Configure the default tag for the OSPF to import external
routes
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, when importing external routes, the type of imported route is type-2, the
cost is 1 and the tag is 1. The interval of importing the external route is 1 second. The
upper limit to the external routes imported is 1000 per second.
Configuring OSPF to Import the Default Route
The command cannot be used to import the default route. Using the
import-route
default-route-advertise
routing table.
Perform the following configuration in OSPF View.
Table 243 Configuring OSPF to Import the Default Route
Operation
Import the default route to OSPF
Remove the imported default route undo default-route-advertise [ always |
By default, OSPF does not import the default route.
Setting OSPF Route Preference
Since it is possible for multiple dynamic routing protocols to run concurrently on one
router, problems of route sharing and selection between various routing protocols can
occur. The system sets a priority for each routing protocol, which will be used in
tie-breaking in the case that different protocols discover the same route.
Perform the following configuration in OSPF View.
Table 244 Setting OSPF Route Preference
Operation
Configure a priority for OSPF for comparing with
the other routing protocols
Restore the default protocol priority
By default, the OSPF preference is 10, and the imported external routing protocol is
150.
command, you can import the default route into the
Command
default-route-advertise [ always | cost
value | type type_value | route-policy
route_policy_name ]*
cost | type | route-policy ]*
Command
preference [ ase ] preference
undo preference [ ase ]
Command
undo default limit
default cost value
undo default cost
default tag tag
undo default tag
default type { 1 | 2 }
undo default type