02-Static Routing Commands
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Table of Contents
1 Static Routing Configuration Commands
Static Routing Configuration Commands
ip route-static default-preference
The term “router” in this document refers to a router in a generic sense or a Layer 3 switch.
Syntax
delete static-routes all
View
System view
Default Level
2: System level
Parameters
None.
Description
Use the delete static-routes all command to delete all static routes.
When you use this command to delete static routes, the system will prompt you to confirm the operation before deleting all the static routes.
Related commands: ip route-static and display ip routing-table in IP Routing Table Display Commands in the IP Routing Volume.
Examples
# Delete all static routes on the router.
<Sysname> system-view
[Sysname] delete static-routes all
This will erase all ipv4 static routes and their configurations, you must reconf
igure all static routes
Are you sure?[Y/N]:Y
Syntax
ip route-static dest-address { mask | mask-length } { next-hop-address [ track track-entry-number ] | interface-type interface-number next-hop-address } [ preference preference-value ] [ description description-text ]
undo ip route-static dest-address { mask | mask-length } [ next-hop-address | interface-type interface-number [ next-hop-address ] ] [ preference preference-value ]
View
System view
Default Level
2: System level
Parameters
dest-address: Destination IP address of the static route, in dotted decimal notation.
mask: Mast of the IP address, in dotted decimal notation.
mask-length: Mask length, in the range 0 to 32.
next-hop-address: IP address of the next hop, in dotted decimal notation.
preference preference-value : Specifies the preference of the static route, which is in the range of 1 to 255 and defaults to 60.
description description-text: Configures a description for the static route, which consists of 1 to 60 characters, including special characters like space, but excluding ?.
track track-entry-number: Associates the static route with a track entry. Use the track-entry-number argument to specify a track entry number, in the range 1 to 1024. Support for this argument varies with devices.
Description
Use the ip route-static command to configure a unicast static route.
Use the undo ip route-static command to delete a unicast static route.
When configuring a unicast static route, note that:
1) If the destination IP address and the mask are both 0.0.0.0, the configured route is a default route. If routing table searching fails, the router will use the default route for packet forwarding.
2) Different route management policies can be implemented for different route preference configurations. For example, specifying the same preference for different routes to the same destination address enables load sharing, while specifying different preferences for these routes enables route backup.
3) When configuring a static route, you can specify the output interface or the next hop address based on the actual requirement. Note that the next hop address must not be the IP address of the local interface; otherwise, the route configuration will not succeed. For interfaces that support network address to link layer address resolution or point-to-point interfaces, you can specify the output interface or next hop address. When specifying the output interface, note that:
l For a Null 0 interface, if the output interface has already been configured, there is no need to configure the next hop address.
l If the output interface is a VLAN interface or a management Ethernet port (M-GigabitEthernet), you must specify the corresponding next hop for the output interface.
Related commands: ip route-static default-preference and display ip routing-table in IP Routing Table Display Commands in the IP Routing Volume.
l The static route does not take effect if you specify its next hop address first and then configure the address as the IP address of a local interface, such as Ethernet interface and VLAN interface.
l To configure track monitoring for an existing static route, simply associate the static route with a track entry. For a non-existent static route, configure it and associate it with a track entry.
l If a static route needs route recursion, the associated track entry must monitor the nexthop of the recursive route instead of that of the static route; otherwise, a valid route may be mistakenly considered invalid.
Examples
# Configure a static route, whose destination address is 1.1.1.1/24, next hop address is 2.2.2.2, tag value is 45, and description information is for internet & intranet.
<Sysname> system-view
[Sysname] ip route-static 1.1.1.1 24 2.2.2.2 tag 45 description for internet & intranet
Syntax
ip route-static default-preference default-preference-value
undo ip route-static default-preference
View
System view
Default Level
2: System level
Parameters
default-preference-value: Default preference for static routes, which is in the range of 1 to 255.
Description
Use the ip route-static default-preference command to configure the default preference for static routes.
Use the undo ip route-static default-preference command to restore the default.
By default, the default preference of static routes is 60.
Note that:
l If no preference is specified when configuring a static route, the default preference is used.
l When the default preference is re-configured, it applies to newly added static routes only.
Related commands: ip route-static and display ip routing-table in IP Routing Table Display Commands in the IP Routing Volume.
Examples
# Set the default preference of static routes to 120.
<Sysname> system-view
