Message: 2
Date: Tue, 01 Aug 2006 18:06:31 +0100
From: Alistair Cunningham <[EMAIL PROTECTED]>
Subject: [asterisk-biz] Solutions for ADSL failover and load balancing
To: Commercial and Business-Oriented Asterisk Discussion
<[email protected]>
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
We have a customer who would like to offer SIP over multiple xDSL
circuits to their PBX customers. This is both for extra capacity using
load balancing and for failover. The end customers will have a small
Enswitch/Asterisk or other VoIP soft switch at their site, and who wish
to use our customer's service for calls to and from the PSTN.
Failover can be done using RIP or OSPF, but load balancing SIP across
multiple xDSLs is a bit beyond our experience. Has anyone
recommendations of how to do this?
The DSL routers will do NAT, so there will be 2 or more separate
external addresses (so the hosted service needs to know to deliver calls
to all). Forwarding ports on the routers is acceptable, as is some sort
of VPN device.
Dont know what it is called but there are DNS servers out there that can do
it based on pinging the machine to see if its up. You can also write your
own custom app. Also why dont they just put thier servers in a data center ?
Wont that be cheaper than getting multiple DSL lines ?
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