eth0 and eth4 - must be online together!!!

Issues related to configuring your network
Whoever
Posts: 1062
Joined: 2013/09/06 03:12:10

Re: eth0 and eth4 - must be online together!!!

Post by Whoever » 2019/02/20 04:12:30

p78.w wrote:
2019/02/19 16:14:32
The plan is to remove eth0 once all traffic is coming via eth4.

I have set eth0 to a dhcp interface and lost access to eth4 (set as static ip address) too.

So need to figure out where is screwing up
What you should do is bond the two physical NICs into one logical interface. As long as you use the correct bond option, you can remove one of the NICs and the bond will continue to work.

p78.w
Posts: 15
Joined: 2019/02/01 09:21:47

Re: eth0 and eth4 - must be online together!!!

Post by p78.w » 2019/02/20 12:18:35

Can do, but at the moment, cant get one of the 10GB ports up!

Do you have a 10GB fibre Nic in a centos box?

User avatar
TrevorH
Forum Moderator
Posts: 25587
Joined: 2009/09/24 10:40:56
Location: Brighton, UK

Re: eth0 and eth4 - must be online together!!!

Post by TrevorH » 2019/02/20 16:55:09

Yes.
CentOS 5 died in March 2017 - migrate NOW!
Full time Geek, part time moderator. Use the FAQ Luke

Whoever
Posts: 1062
Joined: 2013/09/06 03:12:10

Re: eth0 and eth4 - must be online together!!!

Post by Whoever » 2019/02/20 17:58:09

p78.w wrote:
2019/02/20 12:18:35
Can do, but at the moment, cant get one of the 10GB ports up!

Do you have a 10GB fibre Nic in a centos box?
I would also change the NM_CONTROLLED value to "no".

p78.w
Posts: 15
Joined: 2019/02/01 09:21:47

Re: eth0 and eth4 - must be online together!!!

Post by p78.w » 2019/02/21 08:39:09

Thanks, looks like we have a cabling issue with the fibres although these are new cables.

Thanks all for your help,

Upgrading Centos 6.5 > 6.X where could I go to see documentation?

User avatar
TrevorH
Forum Moderator
Posts: 25587
Joined: 2009/09/24 10:40:56
Location: Brighton, UK

Re: eth0 and eth4 - must be online together!!!

Post by TrevorH » 2019/02/21 09:52:30

All doc is on docs.redhat.com or wiki.centos.org. You should read the release notes from both for all releases between your current one and 6.10 (the latest).
CentOS 5 died in March 2017 - migrate NOW!
Full time Geek, part time moderator. Use the FAQ Luke

p78.w
Posts: 15
Joined: 2019/02/01 09:21:47

Re: eth0 and eth4 - must be online together!!!

Post by p78.w » 2019/02/27 12:52:21

Issue was polarity on the fibre ports, which is why ports were going down!

Post Reply