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Configuring ripng timers, Configuring split horizon and poison reverse, Configuring split horizon – H3C Technologies H3C SecPath F1000-E User Manual

Page 767: Configuring the poison reverse function

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Before tuning and optimizing the RIPng network, complete the following tasks:

Configure a network layer address for each interface.

Configure the basic RIPng functions.

Configuring RIPng timers

You can adjust RIPng timers to optimize the performance of the RIPng network. When adjusting RIPng

timers, consider the network performance and perform unified configurations on routers running RIPng to

avoid unnecessary network traffic increase or route oscillation.
To configure RIPng timers:

Step Command

Remarks

1.

Enter system view.

system-view

N/A

2.

Enter RIPng view.

ripng [ process-id ]

N/A

3.

Configure RIPng
timers.

timers { garbage-collect
garbage-collect-value | suppress
suppress-value
| timeout

timeout-value | update

update-value } *

Optional.
By default, the RIPng timers are as follows:

30 seconds for the update timer.

180 seconds for the timeout timer.

120 seconds for the suppress timer.

120 seconds for the garbage-collect timer.

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

The split horizon function disables a route learned from an interface from being advertised through the

same interface to prevent routing loops between neighbors.
H3C recommends enabling split horizon to prevent routing loops.
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 the split horizon
function.

ripng split-horizon

Optional.
Enabled by default.

Configuring the poison reverse function

The poison reverse function enables a route learned from an interface to be advertised through the

interface. However, the metric of the route is set to 16, which causes the route to be unreachable.
To configure poison reverse: