[AusNOG] load balancing ADSl connections

[Damien Gardner Jnr]

It works better than you'd think.  Each connection has it's own public IP,
so requests sent out it, come back in that link - so if you have a good
bandwidth-knowledgable gateway, it can easily spread the load across
multiple connections.   We used to do much the same at ${job-1} with a
10/10 EFM and a couple of ADSL2 links with a pfSense box behind them.  The
EFM got the *outbound* leg of inter-site VPN traffic, VOIP, and SSH
sessions.  And everything else was split across the two ADSL connections.

Yes, the largest single-stream HTTP download was at 20mbps, but two users
would pull 40mbps between them no problems, and with 60 users in the
office, it made quite a difference with the day to day usage in the call
center :)

There were a few issues with sites which assumed that your IP would never
change during a login session, and so went and invalidated the user's
session if their next HTTP request came from a different IP.  But with
CGNAT appearing in force, those sites are getting more clueful ;)

On 4 November 2015 at 07:33, Russell Brenner <rbrenner at brocade.com> wrote:

> Legalities aside, isn't it fairly pointless to load-balance ADSL from one
> side?
>
> Egress load-balancing from the tail end seems like more effort than it's
> worth.
>
> IiNet and others, when they offer this service, bond the two links via a
> single NTU and at the DSLAM, creating a bidirectional aggregated link via
> MLPPP.
>
> The same could be achieved via layer 3, but you'd need to use eBGP multi
> path on both ends (ISP and yours), which would require a half decent router
> or Quagga instance.
>
>
>
> On Tue, Nov 3, 2015 at 12:22 PM -0800, "Ross Wheeler" <ausnog at rossw.net>
> wrote:
>
>
>
> On Wed, 4 Nov 2015, Damien Gardner Jnr wrote:
>
> > Hey Jock,
> >
> > I think you're looking at the wrong side of the network as the one you
> need
> > to focus on the legalities of..?  You can do whatever you want with your
> > ADSL services.  Your legal issues are going to be in the wireless network
> > itself - if your'e passing third party traffic (i.e. the users of the
> > wireless network are not on the same property as you), then you need to
> be
> > a licensed carrier.
>
> (in the interests of accuracy and completeness).... OR have a nominated
> carrier declaration (NCD).
>
> R.
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-- 

Damien Gardner Jnr
VK2TDG. Dip EE. GradIEAust
rendrag at rendrag.net -  http://www.rendrag.net/
--
We rode on the winds of the rising storm,
 We ran to the sounds of thunder.
We danced among the lightning bolts,
 and tore the world asunder
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