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wilhil
Asked: 2013-05-04 07:01:53 +0800 CST

Setting up 802.3ad for true 2Gb/s link aggregation

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I have been trying for a few days and reading many posts/resources online but am getting nowhere... I have found so many frustratingly unanswered topics such as - http://ubuntuforums.org/showthread.php?t=1572502 or http://ubuntuforums.org/showthread.php?t=1572502 .

Basically, I have a load of switches with 1GB uplinks and we have successfully enabled Link Aggregation between many of the bottlenecks and see 2Gb/s (-overhead) being sent across the links.

I have a server hosting items that constantly is at 100% network utilisation. Long term plan is to move to 10Gb Nics, but, that won't happen for a while.

I have followed every guide I can find about 802.3ad support and I am basically in the same state as this post - http://ubuntuforums.org/showthread.php?t=1572502 ... I have fault tolerance in that I can bring either eth0 or eth1 down and the other will immediately pick up, however, I just can't seem to get more than 944Mb/s to be sent or received.

Can anyone help?

networking

1 Answers

  1. It sounds like the switch is playing along if the failover works.

    What is your setting for bond-mode in /etc/networking/interfaces?

    I bet it is bond-mode active-backup, which only provides failover.

    Try changing it to bond-mode balance-rr which does load balancing.

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