Backup wan link

[buffbiff]

I'm trying to create a failover wan link over a satellite
connection. I wanted to keep it simple and just enter static
routes with a metric higher on the satellite link.
This works but it takes 30 seconds to start routing packets via satellite when the normal (t1) connection is unplugged and up to 30 minutes to switch back to the t1 when plugged back in.
Why does this take so long? How can I shorten the time?

 

[fmonteiro]

You may try to specify the backup delay. The syntax is:

backup delay x y

where:
x - activate delay

y - deactivate delay

This should be declared in the primary interface.

 

[buffbiff]

This doesn't seem to be the answer -it didn't change the switching speed. Anyone have any other suggestions?

 

[thethmon]

What are you're routing protocols involved? This sounds like convergence delay.

Todd Hethmon
thethmon@hethmon.com

 

[StarTAC]

mmm.. why don't u try using BGP.. configuring multi-homing to 2 ISPs is really not that hard..

plus, you can increase/shorten the switching times between the ISPs...

what'd u say..?..