Rip Configuration Considerations - HP ProCurve Secure Router 7203 dl Advanced Management And Configuration Manual

IP Routing—Configuring RIP, OSPF, BGP, and PBR
Configuring RIP
13-18
The timeout interval determines the amount of time the router will wait without
receiving information about a route before declaring that route invalid. When
the router times out a route, it sends out poison updates for that route for the
next two update cycles. A poison update (metric 16) informs routers that a
route is unusable. Again, poison updates help speed convergence.
The router does not actually remove a timed-out route from its routing table
until its flush interval expires. The flush interval is the invalid interval plus the
two update intervals in which the router sends out poison updates for the route.
Table 13-4 displays the default settings for timing intervals on the ProCurve
Secure Router. You can configure the update and the timeout timers.
Table 13-4. RIP Intervals on the ProCurve Secure Router
Interval
update
timeout
poison
flush

RIP Configuration Considerations

Table 13-5 summarizes the RIP options you can configure on the ProCurve
Secure Router.
Table 13-5. RIP Options
Options RIP Specification
what information is • complete RIP routing table:
included in updates
• poison reverses for routes
• route summaries for classful
• RIP version
Router Default
30 seconds
180 seconds (6 updates)
60 seconds (2 updates)
240 seconds
– routes learned by RIP
– directly connected RIP
networks
– redistributed routes
learned on that interface
subnets
Configuration Considerations
• specifying RIP networks
(page 13-21)
• redistributing routes from
other protocols into RIP (page
13-22)
• enabling and disabling route
summarization (page 13-24)
• selecting global RIP version
(page 13-20)
• specifying the RIP version
that an individual interface
sends and receives (page
13-20)