3com 8807 Guia De Referência

By default, RIP-2 route summarization is used.

Automatic route summarization can be performed to reduce the routing traffic on 
the network as well as to reduce the size of the routing table. If RIP-2 is used, 
route summarization function can be disabled with the undo summary 
command, when it is necessary to broadcast the subnet route.

RIP-1 does not support subnet mask. Forwarding subnet route may cause 
ambiguity. Therefore, RIP-1 uses route summarization all the time. Thus, the undo 
summary command does not take effect on RIP-1.

Related command: rip version.

# Set RIP version on the interface Vlan-interface 10 to RIP-2 and disable the route 
summarization function.

[SW8800] interface Vlan-interface 10

 

[3Com-Vlan-interface10] rip version 2

 

[3Com-Vlan-interface10] quit

 

[SW8800] rip

 

[3Com-rip] undo summary 

timers { update update-timer-length | timeout timeout-timer-length } *

undo timers { update | timeout } *

RIP view

update-timer-length: Value of the Period Update timer, ranging from 1 to 3600 
seconds. By default, it is 30 seconds.

timeout-timer-length: Value of the Timeout timer, ranging from 1 to 3600 
seconds. By default, it is 180 seconds.

Use the timers command to modify the values of the three RIP timers: Period 
Update, Timeout, and Garbage-collection.

Use the undo timers command to restore the default settings.

By default, the values of Period Update, Timeout, and Garbage-collection timers 
are 30 seconds, 180 seconds, and 120 seconds respectively.

Generally, it is regarded that the value of Garbage-collection timer is fixed to four 
times of that of Period Update timer. Adjusting Period Update timer will affect 
Garbage-collection timer.

The modification of RIP timers is validated immediately.

Related command: display rip.