OSPF failover time

Unanswered Question
Jul 11th, 2010
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Hi all,

I have set up two router with route port (two router with two links with equal cost) and running ospf to test ospf failover time. I get the result is about 4 sec.

Why it so fast. ospf not take 30 sec ?

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saurabh joshi Sun, 07/11/2010 - 09:59
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Check your Hello times first...

if its 1 second than probably the result is correct it gives you Hold-down

timer at 3 to 4 second.

On Sun, Jul 11, 2010 at 10:20 PM, acbennyma <

acbennyma Sun, 07/11/2010 - 10:17
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I haven't intended to tune the hello time and dead interval. On the other hand, I have checked the default dead interval is 40secconds. So why my result is just few seconds ?


Tharak Abraham Sun, 07/11/2010 - 11:34
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How are you checking the fail over ?

If its by shutting down the link or removing the cable, Ospf will NOT wait for hold interval to expire for obvious reasons !

You may delete the process on the other router and check this out, it will work in the desired way



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