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Old 21-04-2008, 16:27
Pet - www.GymRatZ.co.uk
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Default Re: VoIP, load balancing, and bonding: help pls

Jose wrote:[color=blue]
> Hi All,[/color]
Hi Jose,
[color=blue]
> In the case of home-office routers using 2 Internet connections, with
> load balancing capacbilities, would the router normally:[/color]
[color=blue]
> b) assign the VoIP call to one of the connections randomly, as long as
> they're both working.[/color]

Is the correct answer (depending on line speed and data on that line)

I experimented with allowing the router to do things automatically but
this gave a few problems with calls going over the "primary" connection
which then suffered if I did a big ftp upload etc. whereas I wanted all
calls to ONLY go over my secondary PAYG adsl connection which shares no
other network traffic.

What I did was force all typical internet traffic to connection 1 i.e.
port 80 and 8080, 21 and 22 and manually configured waht the router
believes to be the line speed so connection 1 is a 24 Mbps adsl (only
200m line length to exchange)then I put connection 2 down as a 1Mbps
connection rather than letting the router see it as an 8Mbps.

This way... bandwidth sharing always keeps most traffic through
unlimited connection 1 and voip through connection 2 unless one
connection is down then everything goes through the same connection and
reverts back to normal when back up and running.

Forcing voip to use connection 2 only would mean it couldn't run if
connection 2 went down, hence the manual trickery of autobalancing with
speed tweaks to trick the router.
[color=blue]
> As for bonding, from what I've read so far, to start with you need 2
> conections with the same ISP, both with the same username... (If your
> ISP does not supply the bonding already)[/color]

Can't do voip traffic through bonded connections anyway from what I
remember reading as you can't send "timing critical" voice data down
separate paths.
Besides which... having completely independent connections gives much
much better redundancy.

especially if you can get one with cable <spit> and one adsl or if no
cable then one LLU adsl and one from a BT wholesaler (I use entanet &
ukonline)
[color=blue]
> And then, - again if your ISP does not supply bonding - apparently
> most "common" and "afordable" routers can't handle it... I stand to be
> correct as far as bonding's concerned, please.[/color]

Forget bonding it doesn't work for VOIP.

HTH
Pete

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