Configuring Rip Timers; Configuring Split Horizon And Poison Reverse - 3Com 4500G Family Configuration Manual

Configuring RIP Timers

Follow these steps to configure RIP timers:
To do...
Enter system view
Enter RIP view
Configure values for
RIP timers
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.
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...
Enter system view
Enter interface view
Enable split horizon
Enabling poison reverse
The poison reverse function allows an interface to advertise the routes received from it, but the metric of
these routes is set to 16, making them unreachable.
Follow these steps to enable poison reverse:
Use the command...
system-view
rip [ process-id ]
timers { garbage-collect
garbage-collect-value | suppress
suppress-value | timeout
timeout-value | update
update-value } *
Use the command...
system-view
interface interface-type
interface-number
rip split-horizon
1-12
Remarks
––
––
Optional
The default update timer, timeout
timer, suppress timer, and
garbage-collect timer are 30s, 180s,
120s and 120s respectively.
Remarks
—
—
Optional
Enabled by default