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Date: Sun, 19 Dec 2010 01:20:38 +0600
From: Eugene Grosbein <egrosbein@rdtc.ru>
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Subject: Re: lagg/lacp poor traffic distribution
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On 19.12.2010 00:35, Eugene Grosbein wrote:
> Hi!
> 
> I've loaded router using two lagg interfaces in LACP mode.
> lagg0 has IP address and two ports (em0 and em1) and carry untagged frames.
> lagg1 has no IP address and has two ports (igb0 and igb1) and carry
> about 1000 dot-q vlans with lots of hosts in each vlan.
> 
> For lagg1, lagg distributes outgoing traffic over two ports just fine.
> For lagg0 (untagged ethernet segment with only 2 MAC addresses)
> less than 0.07% (54Mbit/s max) of traffic goes to em0

Here 7%, not 0.07%. And I forgot to note it's 8.2-PRERELEASE.

> and over 99.92% goes to em1, that's bad.
> 
> That's general traffic of several thousands of customers surfing the web,
> using torrents etc.  I've glanced over lagg/lacp sources if src/sys/net/
> and found nothing suspicious, it should extract and use srcIP/dstIP for hash.
> 
> How do I debug this problem?