3com 3031 Instruccion De Instalación
RIP Configuration
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By default, RIP-2 route aggregation is enabled.
Configuring the RIP
Preference
Each kind of routing protocol has its own preference, by which the routing policy
will select the optimal one from the routes of different protocols. The greater the
preference value is, the lower the preference becomes. The preference of RIP can
be set manually.
will select the optimal one from the routes of different protocols. The greater the
preference value is, the lower the preference becomes. The preference of RIP can
be set manually.
Perform the following in the RIP View.
By default, the preference of RIP is 100.
Configuring RIP Timer
It has been introduced at the beginning of this chapter that RIP has three timers,
Period update, Timeout and Garbage-collection. The modification on the values of
these timers will affect the convergence speed of RIP.
Period update, Timeout and Garbage-collection. The modification on the values of
these timers will affect the convergence speed of RIP.
Perform the following configuration in RIP view.
The RIP timer value will take effect immediately after the modification.
The default value of timer Period update is 30 seconds, that of timer Timeout is
180 seconds and that of timer Garbage-collection is fixedly as 4 times as that of
timer Period update, i.e., 120 seconds.
180 seconds and that of timer Garbage-collection is fixedly as 4 times as that of
timer Period update, i.e., 120 seconds.
In practice, you may find that the timing length of timer Garbage-collection is not
fixed. For instance, given the timer Period update is set to 30 seconds, the timing
length of the timer Garbage-collection may be 90 to 120 seconds. This is because
a router needs to wait for 4 update packets from the same neighbor before
completely removing an unreachable route from the routing table. However, when
a route changes into the unreachable state is not just the beginning of a new
update period. So the actual timing length of the timer Garbage-collection is
about 3 to 4 times as that of the timer Period update.
fixed. For instance, given the timer Period update is set to 30 seconds, the timing
length of the timer Garbage-collection may be 90 to 120 seconds. This is because
a router needs to wait for 4 update packets from the same neighbor before
completely removing an unreachable route from the routing table. However, when
a route changes into the unreachable state is not just the beginning of a new
update period. So the actual timing length of the timer Garbage-collection is
about 3 to 4 times as that of the timer Period update.
During the RIP timer configuration, you should take the network performance into
consideration when modifying the timer value and keep consistent of
consideration when modifying the timer value and keep consistent of
Table 551 Configuring route aggregation
Operation
Command
Enable the route aggregation function of RIP-2
summary
Disable the route aggregation function of RIP-2
undo summary
Table 552 Setting the RIP preference
Operation
Command
Set the RIP preference
preference value
Restore the default value of RIP preference
undo preference
Table 553 Configuring RIP timer
Operation
Command
Set values for RIP timers
timers { update update-timer-length | timeout
timeout-timer-length } *
timeout-timer-length } *
Restore the default value
undo timers { update | timeout } *