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