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

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When adjusting RIPng timers, consider the network performance, and perform unified configurations on
routers running RIPng to avoid unnecessary network traffic or route oscillation.
To configure RIPng timers:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter RIPng view.
ripng [ process-id ] [ vpn-instance
vpn-instance-name ]
N/A
3. Configure RIPng
timers.
timers { garbage-collect
garbage-collect-value | suppress
suppress-value | timeout
timeout-value | update
update-value } *
Optional.
The RIPng timers have the following
defaults:
• Update timer—30 seconds.
• Timeout timer—180 seconds.
• Suppress timer—20 seconds.
• Garbage-collect timer—20 seconds.
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.
HP recommends enabling split horizon to prevent routing loops.
In frame relay, X.25 and other non-broadcast multi-access (NBMA) networks, split horizon should be
disabled if multiple VCs are configured on the primary interface and secondary interfaces to ensure
route advertisement. For detailed information, see Layer 2—WAN Configuration Guide.
To configure 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 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 means the route is unreachable.
To configure poison reverse:
Ste
p
Command Remarks
1. Enter system view.
system-view
N/A