Re: [LARTC] Loadbalancing the gateway

["Logu" <apachelog@yahoo.com>]

Hi,
This is my network
My LAN IP is 172.16.1.0/255.255.255.0
I have two router which has LAN IP 172.16.1.204 and another one 172.16.1.205
My Linux machine IP is 172.16.1.1.
I have two interface for linux machine one is conected to switch where all
my windows machines are connected and another one 172.16.1.2 is connected to
hub where my routers are connected
I set windows machines gateway as 172.16.1.1

Now how should i activate multipath routing

-Logu
----- Original Message -----
From: "Jason A. Pattie" <pattieja@pcxperience.com>
To: "Logu" <apachelog@yahoo.com>
Cc: "Linux-routing" <lartc@mailman.ds9a.nl>
Sent: Tuesday, October 09, 2001 8:11 PM
Subject: Re: [LARTC] Loadbalancing the gateway


> You might try multi-path routing.  It doesn't exactly load balance the
> lines, as in aggregating the bandwidth together, but it does allow N
> number of simultaneous connections (where N would be the maximum number
> of different routes you have).
>
> In your scenario, let's say you have the 3 routers with IP addresses of
> 1.1.1.1/30, 2.2.2.2/30, and 3.3.3.3/30.  Now, you have your Linux
> firewall/gateway/router/thingy between the routers and the client.  On
> your Linux box, you could have 3 separate network cards each connected
> to one of the routers, or you could have a single network card connected
> to all three routers via a hub or switch (switch would probably be
> better).  Let's say you have one network card.  In that scenario, you
> would assign an IP address in each of the network ranges for the each of
> the routers.  I.e., 1.1.1.2/30, 2.2.2.3/30, 3.3.3.4/30 (note: these IP
> address are probably completely incorrect for assignment in the network
> range I have chosen, just using them as examples; you would get usable
> IP's from your ISP).  To assign these IP address, use the 'ip' command.
>
> ip addr add 1.1.1.2/30 brd + dev eth0
> ip addr add 2.2.2.3/30 brd + dev eth0
> ip addr add 3.3.3.4/30 brd + dev eth0
>
> Now, you will need to setup the multi-path route as your default route.
>  You can specify the 'equalize' parameter if you like, but I have found
> that it doesn't do exactly what you might expect it to do.
>
> ip route add default nexthop via 1.1.1.1 dev eth0 \
>                      nexthop via 2.2.2.2 dev eth0 \
>                      nexthop via 3.3.3.3 dev eth0
>
> And that should take care of that.  Now all of this is assuming that you
> have multiple, different IP ranges for your 3 ISDN lines.  If they are
> all in the same network range, you can forego having 3 IP's assigned to
> the same network card on your firewall.  In that case you would only
> need one.  Then substitue appropriately for the router IP addresses.
>
> Logu wrote:
>
> >Hi,
> >I have 3 isdn connections. Is it possible to loadbalace the bandwidth
using
> >a linux box in between the routers and the client. I will be very much
> >greatful to you if someone helps me in this.
> >
> >-Logu
> >
> >
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> >
>
> --
> Jason A. Pattie
> pattieja@pcxperience.com
>
>
>
>
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