Timers - 3Com Switch 4500 Family Manual

[Sysname] interface Vlan-interface 10
[Sysname-Vlan-interface10] rip version 2
[Sysname-Vlan-interface10] quit
[Sysname] rip
[Sysname-rip] undo summary

timers

Syntax
timers { update update-timer | timeout timeout-timer } *
undo timers { update | timeout } *
View
RIP view
Parameters
update-timer: Length of the Period Update timer in seconds, in the range of 1 to 3600.
timeout-timer: Length of the Timeout timer in seconds, in the range of 1 to 3600.
Description
Use the timers command to modify the lengths of the three RIP timers: Period Update, Timeout, and
Garbage-collection (which is usually set to a length four times that of the Period Update timer).
Use the undo timers command to restore the default settings.
By default, the lengths of the Period Update, Timeout, and Garbage-collection timers are 30 seconds,
180 seconds, and 120 seconds, respectively.
Generally, it is regarded that the value of the Garbage-collection timer is fixed at four times that of the
Period Update timer. Adjusting the Period Update timer will affect the Garbage-collection timer.
The modification of RIP timers is validated immediately.
As specified in RFC 1058, RIP is controlled by the above three timers:
The update timer defines the interval between routing updates.
The timeout timer defines the route aging time. If no routing update related to a route is received
within the aging time, the metric of the route is set to 16 in the routing table.
The garbage-collect timer defines the interval from when the metric of a route becomes 16 to when
it is deleted from the routing table. During the Garbage-Collect timer length, RIP advertises the
route with the routing metric set to 16. If no routing update is announced for that route after the
Garbage-Collect timer expires, the route will be deleted from the routing table.
Related commands: display rip.
Examples
# Set the values of the Period Update timer and the Timeout timer of RIP to 10 seconds and 30 seconds
respectively.
<Sysname> system-view
System View: return to User View with Ctrl+Z.
[Sysname] rip
[Sysname-rip] timers update 10 timeout 30
3-19