R2511-HP MSR Router Series Layer 3 - IP Routing Configuration Guide(V5)

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Ste
p
Command Remarks
3. Configure RIP timers.
timers { garbage-collect
garbage-collect-value | suppress
suppress-value | timeout
timeout-value | update
update-value } *
Optional.
By default:
• The update timer is 30 seconds.
• The timeout timer is 180
seconds.
• The suppress timer is 120
seconds.
• The garbage-collect timer is
120 seconds.
Configuring split horizon and poison reverse
The split horizon and poison reverse functions can prevent routing loops. If both split horizon and poison
reverse are configured, only the poison reverse function takes effect.
Enabling split horizon
Split horizon disables RIP from sending routes through the interface where the routes were learned to
prevent routing loops between adjacent routers.
On NBMA networks such as FR and X.25 where multiple VCs are configured on the primary and
secondary interfaces, disable split horizon to ensure correct route advertisement. For more information,
see Layer 2—WAN Configuration Guide.
Disabling split horizon on point-to-point links does not take effect.
To enable split horizon:
Ste
p
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.
rip split-horizon
Optional.
By default, split horizon is enabled.
Enabling poison reverse
Poison reverse allows RIP to send routes through the interface where the routes were learned, but the
metric of these routes is always set to 16 (unreachable) to avoid routing loops between neighbors.
To enable poison reverse:
Ste
p
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.
rip poison-reverse
By default, poison reverse is
disabled.