3Com Switch 7700 Configuration Manual page 128

120 C 5: IP R
HAPTER OUTING
P O
ROTOCOL PERATION
Perform the following configuration in OSPF view.
Table 44 Configuring Parameters for OSPF to Import External Routes
Operation
Configure the minimum interval for OSPF to
import the external routes
Restore the default value of the minimum
interval for OSPF to import the external routes
Configure the upper limit to the routes that
OSPF import each time
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
No default cost and tag are available when importing external routes, and the type
of the imported route is type-2. The interval for 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 import-route command does not import the default route. Using the
default-route-advertise command, you can import the default route into the
routing table.
Perform the following configuration in OSPF view.
Table 45 Configuring OSPF to Import the Default Route
Operation
Import the default route to OSPF
Remove the imported default route
By default, OSPF does not import the default route.
Setting OSPF Route Preference
Since it is possible for multiple dynamic routing protocols to run on one router
concurrently, there can be the problem of route sharing and selection between
routing protocols . The system sets a priority for each routing protocol, which is
used in tie-breaking if different protocols discover the same route.
Command
default interval seconds
undo default interval
default limit routes
undo default limit
default cost value
undo default cost
default tag tag
undo default tag
default type { 1 | 2 }
undo default type
Command
default-route-advertise [ always ] [ cost
value ] [ type type-value ] [ route-policy
route-policy-name ]
undo default-route-advertise [ always ] [
cost ] [ type ] [ route-policy ]