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 From:  Michel Servaes <michel at mcmc dot be>
 To:  m0n0wall at lists dot m0n0 dot ch
 Subject:  Re: [m0n0wall] Sharing bandwidth between two networks
 Date:  Tue, 19 Aug 2008 16:38:40 +0200
I am doing this right now at home, for my neighbours.
You just have to create pipes of the speed you want to give...

I have a 20mbit cable connection, and I have dedicated a pipe of 
6mbit/sec DL, and a pipe of 384kbit/sec UL...
I configured both pipes on my LAN2 connection, and they can't go any 
faster !

So, if you configure a 3rd and 4th pipe for LAN1, you should be okay by 
this in my opinion... it works very good!

Maxim Khitrov wrote:
> Greetings,
> In the near future I may need to configure a network for two separate
> organizations that are to share a single T3 line. All of the hardware
> and administrative responsibilities will need to be separate. What I
> need right now is to come up with a good way to implement that
> separation, but allow us to share the network connection with minimal
> headache.
> Right now, I'm thinking about setting up about setting up a Soekris
> net5501 with m0n0wall as our main gateway. The system would have three
> network interfaces - one external, and two for our separate networks.
> This system would not be doing any packet filtering, it will simply
> forward traffic received for a given IP to either one or the other
> internal interface - completely transparent.
> That part should be straightforward. What I need help with is figuring
> out how to share bandwidth evenly. As I mentioned, we have a T3 line
> that both organizations are paying for. We can't have a situation
> where one of the networks is monopolizing the available bandwidth. At
> the same time, I don't want to do a hard 50/50 allocation, since
> that's just wasteful. I need some traffic shaping policy that will
> allow either of the networks to consume 100% of the bandwidth when the
> other side is using none of it, but throttling should kick in as soon
> as someone on the other side begins sending or receiving data.
> Allocation should be 50/50 only when both sides are using the link.
> Can this be done with m0n0wall, and if so, can you give me a general
> idea of how to do this?
> On a side note, do you see any problems with using net5501 and/or
> m0n0wall to route traffic on a T3 line? I think since no filtering is
> being done there should not be any problems with performance. Each
> organization will set up their own firewall behind this router, but as
> for the router itself, it's a single point of failure for both
> networks, so I thought the simpler the better.
> Thanks for any advice,
> Max
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