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Linux - Networking This forum is for any issue related to networks or networking.
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Old 09-30-2005, 03:55 AM   #1
ajkannan83
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Registered: Aug 2005
Location: Tamil Nadu, India
Distribution: Redhat, Fedora
Posts: 120

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Routing concept


Hello friends

My question is

Windows 2000 Professional Machine 1 (IP) – 192.168.0.100 (IP Routing is already enabled)

Redhat Linux Server 9.0 Machine (IP NIC 1) – 192.168.0.104
(IP NIC 2) – 192.168.0.103

Windows 2000 Professional Machine 2 (IP) – 192.168.0.66 (IP Routing is already enabled)


Windows 2000 Professional Machine 1 and Red hat Linux Server 9.0 (NIC 1) is connected to 8 port switch 1.

Redhat Linux Server 9.0(NIC 2) and Windows2000 Professional Machine 2 is connected to another 8 port switch 2.

In Windows 2000 Professional Machine 1 > ping 192.168.0.66(call windows Prof Machine2)

Request timed out
Request timed out
Request timed out
…

But a UTP cable is connected between two switches (Switch 1 & Switch 2) it is pinging.

But I don’t want this.

If any routing concepts to ping two machines (Windows Machine 1 & Windows Machine 2)

If any routing enable in Linux server.

Whether any idea please reply.

Thank you
 
Old 09-30-2005, 05:27 AM   #2
Snowbat
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Registered: Jun 2005
Location: q3dm7
Distribution: Mandriva 2010.0 x86_64
Posts: 338

Rep: Reputation: 31
So at the moment it looks like this. The problem here is all machines are on the same subnet. Linux (unless you use advanced routing techniques) will have only one logical route to this subnet so ALL traffic to the subnet will be sent either to eth0 or eth1 BUT NOT BOTH:
Code:
   --------------------------------
   [RH9                           ]
   [192.168.0.104   192.168.0.103 ]
   --------------------------------
       |                      |
-----------------      ----------------
[switch 1       ]------[switch 2      ]
-----------------      ----------------
       |                      |
----------------       ----------------
[2K m1         ]       [2K m2         ]
[192.168.0.100 ]       [192.168.0.66  ]
----------------       ----------------
If you want to use routing, you'll need to introduce a new subnet, say 192.168.1.0.
Code:
   --------------------------------
   [RH9                           ]
   [192.168.0.104    192.168.1.1  ]
   --------------------------------
       |                      |
-----------------      ----------------
[switch 1       ]      [switch 2      ]
-----------------      ----------------
       |                      |
----------------       ----------------
[2K m1         ]       [2K m2         ]
[192.168.0.100 ]       [192.168.1.2   ]
----------------       ----------------
I've removed the link between switch 1 and switch 2, but you could leave it in. It won't be used anyway. To achieve this:
RH9 machine
Code:
ifconfig eth1 192.168.1.1
echo 1 > /proc/sys/net/ipv4/ip_forward
2K m1: Ensure default route is 192.168.0.104
2K m2: Ensure default route is 192.168.1.1

Last edited by Snowbat; 09-30-2005 at 05:37 AM.
 
  


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