On Aug 1, 2013, at 3:55 PM, Ryan Stone <ryst...@gmail.com> wrote:

> Have you tried using only two ports, but both from the NIC?  My suspicion 
> would be that the problem is in the lagg's handling of more than 2 ports 
> rather than the driver, especially given that it is the igb driver in all 
> cases.

Ryan:

We have done this successfully with two ports on the NIC, on another 
hardware-identical host. That said, it is entirely possible that this is a 
shortcoming of lagg. 

Can you think of any sort of workaround? Our desired implementation really 
requires the inclusion of all 4 ports in the lagg. Failing this we're looking 
at the likelihood of 10G ethernet, but with that comes significant overhead, 
both cost and administration (before anybody tries to force the cost debate, 
remember that there are 10G router modules and 10G-capable distribution 
switches involved, never mind the cabling and SFPs -- it's not just a $600 10G 
card for the host). I'd like to defer that requirement as long as possible. 4 
aggregated gig ports would serve us perfectly well for the near-term.

Thanks

Joe
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