[2419] in linux-net channel archive
Re: Configuring my net.
daemon@ATHENA.MIT.EDU (Doug Ledford)
Tue Apr 9 01:16:35 1996
Date: Tue, 9 Apr 1996 00:09:58 -0500 (CDT)
From: Doug Ledford <dledford@dialnet.net>
To: Jeff Sinason <jsinason@itdcomm.com>
cc: linux-net@vger.rutgers.edu
In-Reply-To: <Pine.LNX.3.91.960408233604.201A-100000@itdcomm.com>
On Mon, 8 Apr 1996, Jeff Sinason wrote:
>
> My ISP told me that they had subnetted 6 IP addresses for me. My problem
> is that I'm not sure what to use for the netmasks and what should be
> ifconfig'd. I also don't understand what should be route add'd.
>
> My link to my ISP is 206.196.100.185
>
> My subnet address are 206.196.114.17
> 206.196.114.18
> .
> .
> .
> 206.196.114.22
>
From the sound of it, your ISP gave you 8 addresses, the bottom one being
206.196.114.16 (your network address, shouldn't be used as a machine
address, which is probably why they didn't mention it) and the top one
being 206.196.114.23 (your broadcast address, once again, not to be used
as a machine address).
Here is one way to configure interfaces and routes for this setup:
ifconfig eth0 206.196.114.[17-22] netmask 255.255.255.248 broadcast
206.196.114.23
route add -net 206.65.196.16 netmask 255.255.255.248 broadcast
206.196.114.23 eth0 (I'm not sure if you'll need the broadcast here, but it
shouldn't hurt).
One machine should also have a link to your ISP. Under linux, the
address of the link interface can (and should in your case) be the same
as the ethernet interface. For instance, if your side of the ppp
connection is given the address 206.196.114.17, then the machine running
the ppp connection should have the ethernet interface configured to
206.196.114.17. On that machine, you would install a default route by
adding the options defaultroute to the ppp options file, usually
/etc/ppp/options. On the other machines, you would want to add the
following route:
route add -net default gw 206.196.114.<address of machine with ppp
connection>
This should get you up and going :)
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