HP VPN Firewall Appliances Network Management Configuration Guide

359
Ste
p
Command Remarks
4. Redistribute routes from other
routing protocols.
import-route protocol [ process-id
| all-processes | allow-ibgp ] [ cost
cost | route-policy
route-policy-name | tag tag ] *
By default, route redistribution is
disabled.
Tuning and optimizing RIP networks
Configuration prerequisites
Before you tune and optimize RIP networks, complete the following tasks:
• Configure IP addresses for interfaces to ensure IP connectivity between neighboring nodes.
• Configure basic RIP.
Configuring RIP timers
You can change the RIP network convergence speed by adjusting RIP timers. Based on network
performance, configure identical RIP timer settings to avoid unnecessary traffic or route flapping.
To configure RIP timers:
Ste
p
Command Remarks
1. Enter system
view.
system-view N/A
2. Enter RIP view.
rip [ process-id ] [ vpn-instance
vpn-instance-name ]
N/A
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.
1. 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: