[CentOS] Bonding modes

Paras pradhan pradhanparas at gmail.com
Wed Jan 13 22:41:26 UTC 2010


Thanks for you input. 802.3ad seems better but I am not in a position to
terminate both links in the same switch or same stack. What about mode 6?


On Wed, Jan 13, 2010 at 4:31 PM, nate <centos at linuxpowered.net> wrote:

> Paras pradhan wrote:
> > I have a bonded interface running in mode 1 which is active/passive and
> no
> > issue with this. I need to change it to mode 0 for active/active setup.
> Does
> > mode 0 is dependent on the switches configuration? My setup is: 2 links
> from
> > bonded interface is connected to different switches.
> You really should go the 802.3ad route (mode=4) if anything, this
> does require switch support. You can get unpredictable results with
> mode=0, and if you want best performance and availability stick
> to 802.3ad, which does require going to the same switch(or stack
> of switches).
> Myself with bonding on linux I use only mode=1.
> Another user like yourself posted on this topic a few months ago
> asking the same kind of question, and went down the non-802.3ad
> route and had major issues.
> Also note that your single-stream performance will not exceed that
> of a single link between hosts. So if your doing a file transfer
> between two hosts for example and you have several 1GbE links
> between them the throughput of that transfer will not exceed
> 1Gbps. Load balancing is done on a per MAC/IP/tcp port basis
> depending on the equipment in use.
> 10GbE is really cheap these days(cheaper than 1GbE in some cases
> on a per Gb basis) if you need faster performance, and simple
> to configure, I wrote a blog on this a couple of months ago:
> http://www.techopsguys.com/2009/11/17/affordable-10gbe-has-arrived/
> nate
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