The ip route recursive-lookup blackhole protocol static disable command prevents static routes from being iterated to blackhole routes.
The ip route recursive-lookup blackhole protocol static enable command allows static routes to be iterated to blackhole routes.
The undo ip route recursive-lookup blackhole protocol static disable command allows static routes to be iterated to blackhole routes.
By default, static routes can be iterated to blackhole routes.
ip route recursive-lookup blackhole protocol static { disable | enable }
undo ip route recursive-lookup blackhole protocol static disable
| Parameter | Description | Value |
|---|---|---|
| disable | Prevents static routes from being iterated to blackhole routes. | - |
| enable | Allows static routes to be iterated to blackhole routes. | - |
Usage Scenario
If IGP, static, and blackhole routes exist on a network and a link fault occurs, services may be interrupted because static routes may be iterated to blackhole routes and remain active. To ensure uninterrupted services, run the ip route recursive-lookup blackhole protocol static disable command. This command will prevent static routes from being iterated to blackhole routes so that static routes will become inactive and IGP routes will be selected.
Precautions
The ip route recursive-lookup blackhole protocol static enable and undo ip route recursive-lookup blackhole protocol static disable commands have the same function. You only need to run one of them.
# Prevent static routes from being iterated to blackhole routes.
<HUAWEI> system-view
[HUAWEI] ip route recursive-lookup blackhole protocol static disable
# Allow static routes to be iterated to blackhole routes.
<HUAWEI> system-view
[HUAWEI] ip route recursive-lookup blackhole protocol static enable
# Allow static routes to be iterated to blackhole routes.
<HUAWEI> system-view
[HUAWEI] undo ip route recursive-lookup blackhole protocol static disable