H3C Technologies H3C WX6000 Series Access Controllers - Manual (Page 215)

23-3
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When configuring a static route, the static route does not take effect if you specify the next hop
address first and then configure it as the IP address of a local interface, such as a VLAN interface.
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If you do not specify the preference when configuring a static route, the default preference will be
used. Reconfiguring the default preference applies only to newly created static routes.
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You can flexibly control static routes by configuring tag values and using the tag values in the route
policy.
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If the destination IP address and mask are both configured as 0.0.0.0 with the ip route-static
command, the route is the default route.
Detecting Reachability of the Static Route’s Nexthop
If a static route fails due to a topology change or a fault, the connection will be interrupted. To improve
network stability, the system needs to detect reachability of the static route’s next hop and switch to a
backup route once the next hop is unreachable.
Detecting Nexthop Reachability Through Track
If you specify the nexthop but not outgoing interface when configuring a static route, you can associate
the static route with a track entry to check the static route validity:
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When the track entry is positive, the static route's nexthop is reachable and the static route takes
effect.
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When the track entry is negative, the static route's nexthop is unreachable and the static route is
invalid. For details about track, refer to Track in H3C WX6103 Access Controller Switch Interface
Board Configuration Guide .
Network requirements
To detect the reachability of a static route's nexthop through a Track entry, you need to create a Track
first. For detailed Track configuration procedure, refer to Track in H3C WX6103 Access Controller
Switch Interface Board Configuration Guide .
Configuration procedure
Follow these steps to detect the reachability of a static route's nexthop through Track:
To do… Use the command… Remarks
Enter system view system-view —
Associate the static route
with a track entry
ip route-static dest-address { mask | mask-length }
next-hop-address track track-entry-number [ preference
preference-value ] [ tag tag-value ] [ description
description-text ]
Required
Not configured
by default