Matthew Boehm wrote:
Hi,
I would like to know if Asterisk (installed on Linux or Free BSD) have any
possibility of high availability (such as, if one box down, the other one
get all configuration)?
F5 networks currently makes a layer-7 SIP aware load balancer. I was on
a call with them on Friday and their lowest end model was $21,000 for a
500Mbit throughput switch.
Or, you can get a 3rd box and put SER on it to load balance/failover any
number of asterisk boxes. Cheap and easy. Problem is, what happens when that
SER box gets overloaded? If it does, then you are pushing 10,000 calls per
second. And if you are pushing 10,000 calls per second then you can afford
the $21K switch above.
-Matthew
To put things in perspective, a top of the line multiprocessing DMS
Switch from Nortel Networks, costs millions of dollars. Call
Processing Capacities of TDM switches are rated in BHCAs (busy hour call
attempts). A TDM switch like this can do 7 million BHCAs, which
translated into seconds is less that 2,000 calls per second. 10,000
calls per second is one hell of a lot of calls. I am sure that not even
Vonage with its half a million subs is doing 10,000 calls per second on
their entire network. If they did then they would be processing 36
million calls an hour.
--
Andres
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