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Linux - Networking This forum is for any issue related to networks or networking.
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Old 12-17-2004, 07:11 AM   #1
chrisknight
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Registered: Jan 2003
Location: ohio
Distribution: CentOS5.5, SmoothWall 3.0
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2 nics, 2 networks help.


I have a Fedora Linux Box that I have installed 2 nics into running http, tftp, and ftp.. I am trying to get each of the interfaces to use these services.
eth0 = 192.168.2.10/24
and
eth1 = 172.22.22.203/24
(I have done this on a fc1 and fc2 machine with same results)
/etc/sysconfig/network-scripts/eth0 reads:
# 3com Corp|3c905 100BaseTX
DEVICE=eth0
BOOTPROTO=none
BROADCAST=192.168.2.225
HWADDR=00:10:4C:24:CF:42
IPADDR=192.168.2.10
NETMASK=255.255.255.0
NETWORK=192.168.2.0
ONBOOT=yes
TYPE=Ethernet
USERCTL=no
PEERDNS=no

/etc/sysconfig/network-scripts/eth1 reads:
# DEC|DECchip 21142/43
DEVICE=eth1
BOOTPROTO=none
BROADCAST=172.22.22.255
HWADDR=00:40:F3:A4:1D:F3
IPADDR=172.22.22.203
NETMASK=255.255.255.0
NETWORK=172.22.22.0
ONBOOT=yes
TYPE=Ethernet
USERCTL=no
PEERDNS=no

From the Linux box I can ping Loopback, and I can ping both interfaces
192.168.2.10 and 172.22.22.203.
There is no firewall.
When I connect another computer via crossover cable to eth0(192.168.2.10) and change the computer to 192.168.2.11 I can ping it all day.

When I do the same for eth1(172.22.22.203) and change the computer to 172.22.22.205 I cant ping it. It says destination unreachable...

How can I make this work
Thanks..

Last edited by chrisknight; 12-17-2004 at 07:12 AM.
 
Old 12-17-2004, 07:33 AM   #2
rjlee
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Registered: Jul 2004
Distribution: Ubuntu 7.04
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This sounds like a routing problem, rather than a problem with the configuration of either interface.

You'll find documentation on this on tldp.org. You want to look at the /sbin/route command.
 
Old 12-17-2004, 08:15 AM   #3
eantoranz
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Registered: Apr 2003
Location: Colombia
Distribution: Kubuntu, Debian, Knoppix
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To me, it sounds like iptables is nagging you.
 
Old 12-17-2004, 05:33 PM   #4
chrisknight
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Location: ohio
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Issuing the command 'route' on this box gives me:

Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use IFace
172.22.22.0 * 255.255.255.0 U 0 0 0 eth1
192.168.2.0 * 255.255.255.0 U 0 0 0 eth0
127.0.0.0 * 255.0.0.0 U 0 0 0 lo


Look right?
 
Old 12-18-2004, 10:25 AM   #5
eantoranz
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Registered: Apr 2003
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how about the output of
Code:
iptables -L
?
 
Old 12-19-2004, 02:21 PM   #6
chrisknight
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Registered: Jan 2003
Location: ohio
Distribution: CentOS5.5, SmoothWall 3.0
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I got it working... The answer (although not a good one) was to shut off Kudzu.
It appears as though I had everything configured correctly but there is an issue with 3COM nics and Fedora.
Used a 3C905-tx nic...
Anyone else with this issue, check here:
http://bugzilla.redhat.com/bugzilla/....cgi?id=107389
http://www.linuxquestions.org/questi...hreadid=113417
http://www.linuxquestions.org/questi...04/01/2/133243

Last edited by chrisknight; 12-19-2004 at 02:26 PM.
 
  


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