From: Greg Scott <GregScott@InfraSupportEtc.com>
To: lartc@vger.kernel.org
Subject: RE: [LARTC] A basic setup question
Date: Sun, 20 Jan 2002 02:17:12 +0000 [thread overview]
Message-ID: <marc-lartc-101149221010795@msgid-missing> (raw)
In-Reply-To: <marc-lartc-101148367932480@msgid-missing>
Make sure you are doing this on machine C:
echo "Turning on IP forwarding"
echo "1" > /proc/sys/net/ipv4/ip_forward
That turns on the routing code on machine C.
- Greg Scott
-----Original Message-----
From: Ali badilli [mailto:hasanoglu69@yahoo.com]
Sent: Saturday, January 19, 2002 4:50 PM
To: lartc@mailman.ds9a.nl
Subject: [LARTC] A basic setup question
Hi,
I have just started to build a small linux network. I
have the following question. If anybody helps I will
be really appreciated.
I have installed linux 7.2 in machine A, B, C and
connected them as follows.
A-----------C----------B
eth0 eth0 eth1 eth0
As it is shown in figure C has two ethernet interfaces
eth0 connected to A and eth1 connected to B.
I have assigned the addresses as follows:
A: 192.20.1.3 (eth0) mask:255.255.255.0 default
gw:192.20.1.1
B: 192.20.2.3 (eth0) mask:255.255.255.0 default
gw:192.20.2.1
C: 192.20.1.1 (eth0) mask:255.255.255.0
default gw:192.20.2.1
and 192.20.2.1 (eth1) mask:255.255.255.0
default gw:192.20.1.1
C acts as gateway between between A and B.
I configure routing table as follows:
A: destination network network mask gateway
0.0.0.0 0.0.0.0 92.20.1.1
192.20.1.0 255.255.255.0 192.20.1.3
B:destination network network mask gateway
0.0.0.0 0.0.0.0 92.20.2.1
192.20.2.0 255.255.255.0 192.20.2.3
C:destination network network mask gateway
192.20.2.0 255.255.255.0 192.20.2.1
(eth0)
192.20.1.0 255.255.255.0 192.20.1.1
(eth1)
I can ping from A to 192.20.2.1 but I cannot ping to
192.20.2.3(which is B)
similarly,
I can ping from B to 192.20.1.1 but cannot ping to
192.20.1.3 (which is A).
In other word, Both A and B can ping the interfaces of
C which belong to different subnets, but A and B
cannot ping each other.
Am I missing some basic configuration things?, Should
I install any other patch or etc?,
I will be really appreciated If some body give me
clear explanation. Sorry for asking a simple question.
Haci
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next prev parent reply other threads:[~2002-01-20 2:17 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-01-19 22:49 [LARTC] A basic setup question Ali badilli
2002-01-20 2:17 ` Greg Scott [this message]
2002-01-20 13:06 ` Stef Coene
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