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Static Routes 69
destination address is in the directly connected network, the transmitting
interface can be specified.
■ For a P2P interface, the address of the next hop defines the transmitting
interface because the address of the opposite interface is the address of the
next hop of the route.
In fact, for all routing items, the next hop address must be specified. When the
IP layer transmits a packet, it first searches the matching route in the routing
table, depending on the destination address of the packet. Only when the next
hop address of the route is specified, can the link layer find the corresponding
link layer address, and then forward the packet.
■ For different configurations of preference-value, you can flexibly apply the
routing management policy.
■ The reject and blackhole attributes indicate the unreachable route and the
blackhole route.
Configuring a Default Route
Perform the following configurations in system view.
Parameters for default route are the same as for static route.
Deleting All Static Routes
You can use the undo ip route-static command to delete one static route. The
Switch 8800 also provides the delete static-route all command for you to delete
all static routes at one time, including the default routes.
Perform the following configuration in system view.
Displaying and Debugging Static Routes
After you configure static and default routes, execute the display command in all
views, to display the static route configuration, and to verify the effect of the
configuration.
Table 3 Configuring a Default Route
Operation Command
Configure a default route ip route-static 0.0.0.0 { 0.0.0.0 | 0 } {
interface-name | gateway-address } [
preference value ] [ reject | blackhole ]
Delete a default route undo ip route-static 0.0.0.0 { 0.0.0.0 | 0 } {
interface-name | gateway-address } ]
Table 4 Deleting All Static Routes
Operation Command
Delete all static routes delete static-routes all
Table 5 Displaying and Debugging the Routing Table
Operation Command
View routing table summary display ip routing-table
View routing table details display ip routing-table verbose
View the detailed information of a specific
route
display ip routing-table ip-address