Redundant network interfaces on a CentOS 7 server

[lgs-it]

Hello,

I'd like to configure redundant network interfaces (not a bond) on a CentOS 7 x64 server.

Foe example:

Code: Select all

   CentOS 7
+--------------+        +----------+
| 192.168.1.1  |--eth0--| Switch 1 |-- ...
| ------------ |        +----------+
|              |                       
| ------------ |        +----------+
| 192.168.1.1  |--eth1--| Switch 2 |-- ...
+--------------+        +----------+ 

Let's say, eth0 is the default interface. In case Switch 1 is down for some reason, eth1 takes control, so the CentOS server is still reachable.

So, eth1 is "idle" until Switch 1 fails. I don't care if eth0 takes control if Switch 1 is up again or eth1 stays up (until Switch 2 is down). The primary target is redundancy.

Would this be possible?

Thanks in advance!

[TrevorH]

That's what a bond is!

[lgs-it]

Okay, I see. I thought bond connections had to be on the same switch, so this was a general problem of understanding by myself.

However, in that case I have another problem. I already tried to get a bond running with multiple VLANs on CentOS 7, but ran into the same issue as that user (only on CentOS 7, version 6 works fine):

https://bugs.centos.org/view.php?id=7460