[Asterisk-Users] Using a Dual WAN Load Balancing Device

Jared Armstrong jarmstrong at omnispear.com
Tue Feb 8 08:05:45 MST 2005


Pedro,

My understanding is that this will not allow for any balancing on any
connections once they are established. Any connection on the first line
that is already established will continue to stay on that line/ip
address until the connection is dropped and a new one is established. 

It would be better if you could get the ISP to set up the lines so that
you could have a "shadow" DSL line like I've seen done with T1 lines
before. Then this might be a more adequate solution in my mind.

Jared Armstrong

-----Original Message-----
From: Pedro [mailto:traci.asterisk at gmail.com] 
Sent: Tuesday, February 08, 2005 9:17 AM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: [Asterisk-Users] Using a Dual WAN Load Balancing Device

We have a client that wants to bond 2 DSL circuits instead of getting
a T-1 (or similar) at their office to run their VoIP traffic on.  We
came across this Multihomed Gateway (MH200):

http://www.cyberpathinc.com/mh200/details.htm

Does anybody think this would work if installed at the client location
handling NAT for 10 Cisco 7960's and connecting to our public asterisk
server?

My concern (as is others on this list in regards to load balancing) is
what would happen if a call had to be directed out the other WAN port
of the MH200 or if a call were to come in on 1 circuit and it runs out
of bandwidth - how would the call be delivered to the second circuit. 
Or even if during a call, the inbound audio is fine (since DSL usually
has more bandwidth on the download), but the outbound audio stream had
to be pushed out the other WAN port.

Hope that all makes sense (I almost confused myself! LOL)

I am not holding my breath that this is a viable solution, but was
just wondering your thoughts.

Thanks!

Pedro





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