[olug] NFS & @Home Networking

[tetherow at nol.org]

You will want to use 
route add -host 1.2.3.4 dev eth0
and
route add -host 1.2.4.23 dev eth0
on each host (first is alice, second is bob).  The reason being you
would now not be able to contact anything else with a 1.2.3.0 or
1.2.4.0 network address since they are all routed to broadcast ether
instead of going to the gateway and out onto the network.

On  6 Aug, Phil Brutsche wrote:
> Hrmm...
> 
> I see someone else has already posted this, but here I go:
> 
> The problem is that your two computers are on the same ethernet network,
> but different IP networks.  They also don't know that they are on the
> same ethernet network, so traffic from one has to go out the cable
> modem, then back again, before it will hit the other.
> 
> The solution is to make the computers aware of the fact that they are on
> the same ethernet network.
> 
> This is how the computers in my example are configured:
> 
> alice:
> ip 1.2.3.4
> netmask 255.255.255.0
> broadcast 1.2.3.255
> gateway 1.2.3.1
> 
> bob:
> ip 1.2.4.23
> netmask 255.255.255.0
> broadcast 1.2.4.255
> gateway 1.2.4.1
> 
> You would do this to make them think of each other as the same network:
> 
> On alice run:
> route add -net 1.2.4.0 netmask 255.255.255.0 dev eth0
> (if you have the iproute2 package installed you could use:
> ip route add to 1.2.4.0/24 dev eth0)
> 
> On bob run:
> route add -net 1.2.3.0 netmask 255.255.255.0 dev eth0
> (with iproute2 that would be: ip route add to 1.2.3.0/24 dev eth0)
> 
> You should put the appropriate line in the /etc/rc.local of the
> appropriate computer to make these changes stick between reboots.
> 

-- 
------------------------------------------------------------------------
Sam Tetherow                           tetherow at nol.org
Director of Development
NIC Labs (IDG)                         http://www.nicusa.com


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