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Thursday, December 8, 2011

Lab 4. RIP Convergence Timers


Please use basic configuration as the same as http://pursuingmydestiny.blogspot.com/2011/12/lab-3-rip-summary-address.html.
RIP have default timers: sending update every 30 second, invalid timer after 180 second, hold down timer every180 second, and flush timer every 240 second.

R1(config-router)#do sh ip pro
Routing Protocol is "rip"
Outgoing update filter list for all interfaces is not set
Incoming update filter list for all interfaces is not set
Sending updates every 30 seconds, next due in 14 seconds
Invalid after 180 seconds, hold down 180, flushed after 240
Redistributing: rip

Let's change the timer R1 and R2 

R1(config-router)#timers basic 10 60 60 80
R2(config-router)#timers basic 10 60 60 80

Verify the timer 

R1(config-router)#do sh ip pro
Routing Protocol is "rip"
Outgoing update filter list for all interfaces is not set
Incoming update filter list for all interfaces is not set
Sending updates every 10 seconds, next due in 9 seconds
Invalid after 60 seconds, hold down 60, flushed after 80

R2#sh ip pro
Routing Protocol is "rip"
Outgoing update filter list for all interfaces is not set
Incoming update filter list for all interfaces is not set
Sending updates every 10 seconds, next due in 4 seconds
Invalid after 60 seconds, hold down 60, flushed after 80

R3#sh ip pro
Routing Protocol is "rip"
Outgoing update filter list for all interfaces is not set
Incoming update filter list for all interfaces is not set
Sending updates every 30 seconds, next due in 12 seconds
Invalid after 180 seconds, hold down 180, flushed after 240

R3#ping 1.1.1.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 1.1.1.1, timeout is 2 seconds:
!!!!!

R2 still have default timers, so it need ‘ip rip advertise 30’ in interface to R3 in order to have the same RIP timer with R3.

R2(config)#int fa0/0
R2(config-if)#ip rip advertise 30

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