Two network ports on same subnet failed

thirun · 10-01-2014, 05:43 AM

Hi,

I have searched in the forum for the below problem, I didn't got any related solution.

I'm trying to configure two Ethernet ports on same subnet in the Linux, I mean eth0 and eth1 configured has 192.168.4.20 and 192.168.4.30 respectively.

The above configuration not working means unable to ping both at a time, only the eth0 works fine.

I've did my home work by browsing, but none of the suggestion worked for me. is it possible to configure on same subnet ? if so what are all the configuration I need to do? is there any document which tells the steps.

Please suggest me..

Thanks in advance

ilesterg · 10-01-2014, 07:23 AM

What distro are you using?

If it's CentOS, open /etc/sysctl.conf, then edit the value from 1 to 2

Code:

net.ipv4.conf.default.rp_filter = 1

and then add

Code:

net.ipv4.conf.all.rp_filter = 2

restart config:

Code:

sysctl -p

---------- Post added 10-01-14 at 08:23 PM ----------

That also applies to Scientific Linux/Redhat/Oracle Linux

thirun · 10-06-2014, 11:29 PM

hi ilesterg,

Thanks for your reply
I'm playing with some APM process based custom board. I'm using APM custom kernel and systemd file system build.