Altering Rip Intervals - HP 7102dl - ProCurve Secure Router Configuration Manual

IP Routing—Configuring RIP, OSPF, BGP, and PBR
Configuring RIP
For example, you can configure a loopback interface as a passive interface to
prevent the routing from sending out redundant advertisements.
For another example, you can use a tunnel interface to receive RIP updates
from a remote VPN site. If you want the local router to receive updates but
not to advertise local networks, you should enable RIP on the tunnel and
specify the tunnel as a passive interface. Enter the follow commands:
ProCurve(config)# interface tunnel 1
ProCurve(config-tunnel)# ip address 192.168.100.1 /30
ProCurve(config-tunnel)# tunnel source 1.1.1.1
ProCurve(config-tunnel)# tunnel destination 1.1.1.2
ProCurve(config-tunnel)# exit
ProCurve(config)# router rip
ProCurve(config-rip)# network 192.168.100.1 255.255.255.252
ProCurve(config-rip)# passive-interface tunnel 1
For more information about configuring a tunnel, see Chapter 11: Configur-
ing a Tunnel with Generic Routing Encapsulation.

Altering RIP Intervals

You can alter the update and the timeout interval on the ProCurve Secure
Router. The update interval determines how often router interfaces advertise
RIP routes. The default interval is 30 seconds. You can change the update timer
by entering this command from the RIP configuration mode context:
Syntax: update-timer <seconds>
You can set the timer to any number between 5 and 4,294,967,295 seconds.
Raising the update interval can reduce overhead but cause convergence to
become unacceptably low.
Every RIP entry in the routing table has a timeout timer. When this timer
reaches zero, the router deletes the entry. The timer resets whenever the
router receives an update about the route. In other words, the timeout interval
determines how long the router can go without receiving information on a
route before deleting that route.
The timeout timer must at least equal the update timer for neighboring RIP
routers. Generally, you should set the timeout timer to a multiple of the update
interval used by neighboring routers. The multiple you choose depends on the
reliability of the network. For example, to allow a router to miss two packets,
you would set the timeout timer to triple the update timer. By default, the
timeout timer is six times the update timer.
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