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I'm currently investigating how to set up ADSL failover.
The default gateway on the network is a Linux machine, and its default
gateway is a Nokia M1122 connected to Tempest. In case the Tempest
connection goes down, I would like to set the machine up to fall back to a
secondary route, connected to a Jetstream modem. The Jetsream connection
should only ever be used in the case that the Tempest connection is
How I've thought this should work:
- set a route for both modems, giving the Tempest modem a higher metric
(this might not be necessary?)
lower metric's are prefered. you want to give the jetstart modem a
Would a ping test fired by something like Nagios be
enough for this task?
The modems support RIP, but I'm not sure what I'd need to do with the Linux
machine to use it, and if it's overkill? Am I missing anything?
rip would be good if they announce if they are up/down, as you could use
rip to add/remove the routes. rip works just like ospf, see the zebra
docs for more information
Bower's Law: Talent goes where the action is.
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Comment: Only when you are sure they have you, can you stop being paranoid
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