NIC Bonding oo Centos 6.0

Posted on 2011-10-27
Last Modified: 2012-05-12
We have two hp switches connected together with vrrp to provide redundant gateways, we have two HP 7000 blade enlosures, with two Gb2c switches each.

We need to set nic bonding on one of the blades running Centos.

Can you help?

So far we tried it on ubuntu and we only managed to get mode 3  to work, however once the server is rebooted one of the nics remains disconnected and we have to enable it manualy for redundancy to work. We tried other modes like mode 1 but we got 50% ping loss, it looks like its still loadbalancing on the offline link.

NOTE: Each blade has one nic on SW1 and another on SW 2 of the enclosure, which than connect to switch a and switch b. (Attached Diagram)

I do not think this is a network problem, most probably its a nic bonding config issue.
Question by:Jack-Black
    LVL 57

    Expert Comment

    Have you tried following:


    Accepted Solution

    Blade switches had to be configured to monitor port 24 and bring the internal ports to a down state else the  serve would think that there was no nic failure.

    Author Closing Comment


    Write Comment

    Please enter a first name

    Please enter a last name

    We will never share this with anyone.

    Featured Post

    Threat Intelligence Starter Resources

    Integrating threat intelligence can be challenging, and not all companies are ready. These resources can help you build awareness and prepare for defense.

    Don’t let your business fall victim to the coming apocalypse – use our Survival Guide for the Fax Apocalypse to identify the risks and signs of zombie fax activities at your business.
    If your business is like most, chances are you still need to maintain a fax infrastructure for your staff. It’s hard to believe that a communication technology that was thriving in the mid-80s could still be an essential part of your team’s modern I…
    After creating this article (, I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
    Get a first impression of how PRTG looks and learn how it works.   This video is a short introduction to PRTG, as an initial overview or as a quick start for new PRTG users.

    758 members asked questions and received personalized solutions in the past 7 days.

    Join the community of 500,000 technology professionals and ask your questions.

    Join & Ask a Question

    Need Help in Real-Time?

    Connect with top rated Experts

    11 Experts available now in Live!

    Get 1:1 Help Now