2 adsl connections load balancing with natd/ipfw

[David J. Hughes]

Actually, that isn't quite correct.  You do not need a virtual IP
address (such as an HSRP or VRRP setup).  You just need equal cost
paths from the ISP to you.

To achieve this you will need to route an address range from your
ISP to your network.  It can be your address space, a small piece
of ISP provided space, or even a chunk of private space.  Just as
long as it's routed from the ISP to you via the DSL tails.  The 
ISP just needs to see equal cost paths to your prefix via BOTH
your DSL tails.  That way they will use both.

There are several ways to do this (inc running eBGP or OSPF to them
from your equipment).  Have a chat with your ISP to see what options
they would consider.


David
...

> -----Original Message-----
> From: owner-freebsd-isp at freebsd.org 
> [mailto:owner-freebsd-isp at freebsd.org] On Behalf Of Joe Hamelin
> Sent: Wednesday, 26 May 2004 8:02 AM
> To: freebsd-isp at freebsd.org
> Subject: Re: 2 adsl connections load balancing with natd/ipfw
> 
> 
> It's not an easy solution at all.  You'll need the help of your ISP
> and a run some routing protocol (i.e.; OSPF or BGP.)  The reason is
> that you will need to tie the two IPs of the DLS lines to a third
> virtual IP, at both ends.  Good luck getting your ISP to play along.
> 
> -Joe
> 
> -- 
>   ========================================================
>    Joe Hamelin       joe at nethead.com                W7COM
>    Nethead, Inc.   Edmonds, Washington       206.898.8086
>   ========================================================
> 
> On Tue, 25 May 2004, Evren Yurtesen wrote:
> 
> :Hi,
> :
> :I looked for such a long time in mailing lists and google 
> but I couldnt
> :find anything conclusive about how can I do load balancing for 2 ADSL
> :links I have. I have 2 ADSL connections to the same ISP and 
> they are the
> :same speed. I just want to load balance it so that both links will be
> :used evenly (or about even).
> :
> :Any tips or suggestions?
> :
> :Evren
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