How to configure two or more ethernet card .

rakeshsr78 · n00b Joined: 30 Jul 2020 Posts: 3

HI everyone [topic=][url][post=][bug=][code][list], I need your help on dual Ethernet configuration.

I have 2 lan card
1 - One I had configured for ssh access and other local acess. Intel 1 g card(eth3)
2 - for exchange Connectivity (eth0) solarfalre 40g card
Both Have different network and Ip .
Problem I am getting here If up both Ethernet. My eth3( local ) also disconnected. And If I down any eth0 again. My local network eth3 start again.
The steps I had followed here
I created symbolic link for both Ethernet Inside /etc/init.d/
Then I configured
/etc/conf.d/net
And update both network Ip and gateway everything need to start a connection.
So I stay down my eth0 my eth3 (local) work fine.

CaptainBlood · Advocate Joined: 24 Jan 2010 Posts: 3627

Welcome to Gentoo.
I guess traffic routing is required, e.g. using iptables or alike.
When required it's what I use at raw level, i.e. 100% manual config.

IIRC some applications integrate it at higher, i.e. easier, level.
Shorewall as a exemple; no experience thought.
Thls 4 ur attention, interest & support.

rakeshsr78 · n00b Joined: 30 Jul 2020 Posts: 3

So any link or eg : How to slove this issue

Anon-E-moose · Posted: Thu Jul 30, 2020 3:43 pm Post subject:

what does "ip route" return?
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gcc 13, profile 17.0 (custom bare multilib), openrc, wayland

NeddySeagoon · Posted: Thu Jul 30, 2020 3:57 pm Post subject:

rakeshsr78,

I guess you have two many default routes.
You can have more that one as long as they all have different metrics. The one with the lowest metric will be preferred.
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Regards,

NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.

rakeshsr78 · n00b Joined: 30 Jul 2020 Posts: 3

ip route

default via 125.125.126.254 dev eth3 metric 6
125.125.126.0/24 dev eth3 proto kernel scope link src 125.125.126.30