H3C S9500 Series Operation Manual page 225

Operation Manual – Routing Protocol
H3C S9500 Series Routing Switches
The packets sent to NULL interface, a kind of virtual interface, will be discarded at once.
This can decrease the system load.
Preference
Depending on the configuration of preference, you can achieve different route
management policies. For example, to implement load sharing, you can specify the
same preference for multiple routes to the same destination network. To implement
route backup, you can specify different preferences for them.
Other parameters
The attributes reject and blackhole respectively indicate the unreachable route and
the blackhole route.
2.2.2 Configuring a Default Route
Perform the following configurations in system view.
Table 2-2 Configure a default route
Configure a default route
Delete a default route
The meanings of parameters in the command are the same as those of the static route.
2.2.3 Deleting All the Static Routes
You can use the undo ip route-static command to delete one static route. The S9500
series also provide the following command for you to delete all static routes at one time,
including the default routes.
Perform the following configuration in system view.
Table 2-3 Delete all static routes
Operation
Delete all static routes
Delete all static routes
of the VPN
Operation
ip route-static 0.0.0.0 { 0.0.0.0 | 0 } { interface-type
interface-number | gateway-address } [ preference
value ] [ reject | blackhole ]
undo ip route-static 0.0.0.0 { 0.0.0.0 | 0 }
[ interface-type interface-number | gateway-address ]
[ preference value ]
delete static-routes all
delete vpn-instance vpn-instance-name static-routes
all
Chapter 2 Static Route Configuration
Command
Command
2-3