RIP configuration
FortiGate-100 Installation and Configuration Guide 123
7 Select Apply to save your changes.
Figure 1: Configuring RIP settings
Update The time interval in seconds between sending routing table updates. The
default is 30 seconds.
Invalid The time interval in seconds after which a route is declared invalid. Invalid
should be at least three times the value of Update. A route becomes invalid
when there is an absence of updates that refresh the route. The route then
enters holddown. The route is marked inaccessible and advertised as
unreachable. However, the route is still used for forwarding packets. The
default is 180 seconds.
Holddown The time interval in seconds during which routing information regarding
better paths is suppressed. Holddown should be at least three times the
value of Update. A route enters into a holddown state when an update packet
is received that indicates the route is unreachable. The route is marked
inaccessible and advertised as unreachable and is no longer used for
forwarding packets. When holddown expires, the route can be flushed from
the routing table. The default is 180 seconds.
Flush The amount of time in seconds that must pass before a route is removed
from the routing table. The value for Flush should be greater than the value
for Invalid. If the value for Flush is less than the value for Invalid, the proper
holddown interval cannot elapse, which results in a new route being
accepted before the holddown interval expires. The default is 240 seconds.
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