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Configuring split horizon and poison reverse, Enabling split horizon – H3C Technologies H3C S7500E Series Switches User Manual

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To do…

Use the command…

Remarks

Configure values for RIP timers

timers { garbage-collect

garbage-collect-value | suppress

suppress-value | timeout

timeout-value | update

update-value } *

Optional

The default update timer, timeout

timer, suppress timer, and

garbage-collect timer are 30s,

180s, 120s and 120s respectively.

Based on network performance, you need to make RIP timers of RIP routers identical to each other to

avoid unnecessary traffic or route oscillation.

Configuring Split Horizon and Poison Reverse

If both split horizon and poison reverse are configured, only the poison reverse function takes effect.

The split horizon and poison reverse functions can avoid routing loops.

Enabling split horizon

The split horizon function disables an interface from sending routes received from the interface to

prevent routing loops between adjacent routers.

Follow these steps to enable split horizon:

To do…

Use the command…

Remarks

Enter system view

system-view

Enter interface view

interface interface-type

interface-number

Enable split horizon

rip split-horizon

Optional

Enabled by default

Disabling the split horizon function on a point-to-point link does not take effect.