[LARTC] Load Sharing PPP Connections on an Masqed LAN

[Arthur van Leeuwen arthurvl@sci.kun.nl]

<PRE>On Mon, 4 Dec 2000, Lisle Wilson wrote:

&gt;<i> My problem is whne i dial in with both connections, it only routes the 
</I>&gt;<i> internet through the last ppp connection i've made (usually 
</I>&gt;<i> ppp1). This means that although ppp0 and ppp1 are connected to 
</I>&gt;<i> the internet, my computers on the LAN (ip 192.168.1.x) are only 
</I>&gt;<i> connecting through one modem.  
</I>
You have set the `defaultroute' option to PPP. This is its intended effect.

&gt;<i> What I need is to know how to set up routing, or 
</I>&gt;<i> Loadsharing so that i can utilise both modems over my Masqed network.
</I>
&gt;<i> My Desired Set Up:
</I>&gt;<i> 
</I>&gt;<i> Internet  Internet
</I>&gt;<i>    |              | 
</I>&gt;<i>    |ppp0       |ppp1 
</I>&gt;<i>    |              | 
</I>&gt;<i>  _______________________________________
</I>&gt;<i> |    Linux Box                          |
</I>&gt;<i> | IP Masquerading                       |
</I>&gt;<i> | routing or lOadsharing                |
</I>&gt;<i> --------------------------------------------------
</I>&gt;<i>       |
</I>&gt;<i>       |eth0
</I>&gt;<i>       |
</I>&gt;<i>  The Rest of My Lan
</I>
Ooooooh, an ASCII-gram.

First: read up on the 'ip' tool that comes with iproute2.
Second: set up /etc/ppp/ip-up.local scripts (not exactly sure what Mandrake 
        uses for that, but that's what RedHat uses) to dynamically reroute
        to the correct interfaces
Third: make a multipath route over the two ppp links. This will dynamically
       balance packets over the two links, based on the destination adresses.

Hope this helps.

Doei, Arthur.

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</PRE>