Ron McCarthy a écrit :
Hello All-
I have looked around quite a bit, and cant seem to find anyway to
setup a * box/cluster to have 100% uptime. Does anyone have any
articles or knowledge on setting up a system that could be made to
handle a server crashing, yet phones still be able to operate, I know
this can be accomplished with a backup server and DNS SRV records, but
that requires PRI's in both machines and a bunch of mess from what I
have read. If that is the only way of doing failover is via a backup
server, is there anyway to have all my PSTN connections on one
server/box, such as the Cisco Access Servers that provide SIP/MGCP ->
PSTN connectivty?
You could set your gateway to send / receive calls from a certain IP
address (say 192.168.1.200). Then have two machines with identical *
config (you could use a filesystem such as coda to achieve file
synchronisation). Finally, use heartbeat (hb from the linux-ha project)
so that your failover takes over the primary's IP address when things go
wrong.
You *could* have issue with SIP registrations but on an internal network
it might make sense (depending on the level of unsecurity you can
tolerate) for IP phones to have a static IP address and do IP based
auth. In which case you would have no issues with SIP registrations
either...
That being said, you still have a single point of failure: your cisco
box. I agree that it *should* not break, but I'm sure that even cisco
gear breaks from time to time...
Cheers,
Jean-Michel.
--
Jean-Michel Hiver - http://ykoz.net/
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