Configuring split horizon and poison reverse
If both split horizon and poison reverse are configured, only the poison reverse function takes effect.
Configuring split horizon
Split horizon disables RIPng from sending routes through the interface where the routes were learned to prevent routing loops between neighbors.
As a best practice, enable split horizon to prevent routing loops in normal cases.
To configure split horizon:
Step | Command | Remarks |
|---|---|---|
1. Enter system view. | system-view | N/A |
2. Enter interface view. | interface interface-type interface-number | N/A |
3. Enable split horizon. | ripng split-horizon | By default, split horizon is enabled. |
Configuring poison reverse
Poison reverse enables a route learned from an interface to be advertised through the interface. However, the metric of the route is set to 16, which means the route is unreachable.
To configure poison reverse:
Step | Command | Remarks |
|---|---|---|
1. Enter system view. | system-view | N/A |
2. Enter interface view. | interface interface-type interface-number | N/A |
3. Enable poison reverse. | ripng poison-reverse | By default, poison reverse is disabled. |