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From: Budianto <budianto@www.ee.itb.ac.id>
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: TCP/IP & Routing & netmasks. :-)
Date: Sun, 28 Jan 1996 05:41:08 +0700
Organization: Institut Teknologi Bandung
Lines: 65
Message-ID: <Pine.BSF.3.91.960128053040.14074A-100000@www.ee.itb.ac.id>
References: <4e83av$sn@turtle.apana.org.au>
NNTP-Posting-Host: www.ee.itb.ac.id
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In-Reply-To: <4e83av$sn@turtle.apana.org.au>
On 25 Jan 1996, Robert Nagy wrote:
> hosts on this net hosts on this net
> | | | | | | | | |
> ---------------- -------------------
> 203.9.159.1 203.9.159.128
> ---------------- -------------------
> | |
> | |
> \ /
> \ /
> \ /
> \ /
> \ /
> \ /
> \ /
> \ /
> ---------------------
> our new isp
> let's say
> the router is
> 130.131.9.1
> ---------------------
>
> Is the netmask on both .1 and .128 supposed to be 255.255.255.128 ?
> does this mean that I simply point the routes by
>
> route add -net 203.9.159.127 130.131.9.1 on the .1 system and
> route add -net 203.9.159.0 130.131.9.1 on the .128 system?
>
> -----------------------------------------------------------------------------
> URL: http://turtle.apana.org.au/~nagy/ Email: nagy@turtle.apana.org.au
> 1993 Harley Davidson Fat Boy, A Good Woman & A Bull Terrier
> That Makes My Life Complete
First , you can't take the broadcast address (203.9.159.127) for
IP , so you must change it to another ip , ex 203.9.159.129
On your router you have 3 NIC so you must give the 3 NIC with IP
addres and configuring it.
For NIC point to 203.9.159.1 you can give 203.9.159.2
For NIC point to 203.9.159.129 you can give 203.9.159.130
Maybe you can try my opinion :
1. on 203.9.159.1
ifconfig <interface_name> 203.9.159.1 netmask 255.255.255.128
route add default -net 203.9.159.1
2. on 203.9.159.129
ifconfig <interface_name> 203.9.159.129 netmask 255.255.255.128
route add default -net 203.9.159.129
3. on router 130.131.9.1
ifconfig <interface_name> 203.9.159.2 netmask 255.255.255.128
ifconfig <interface_name> 203.9.159.130 netmask 255.255.255.128
ifconfig <interface_name> 130.131.9.1 netmask 255.255.255.0
route add -net 203.9.159.0 203.9.159.2
route add -net 203.9.159.128 203.9.159.130
route add default -net 130.131.9.1
budianto@hme.ee.itb.ac.id
Electrical Engginering ITB