Issues with ixl(4)

[K. Macy]

On Wednesday, April 20, 2016, Dustin Marquess <dmarquess at gmail.com> wrote:

> I tried backing out that change and everything worked for a few minutes
> and then started acting up again.  Then I notice Sean Bruno's "TCP Packets
> Drop!!!" email about LACP.  I disabled LACP on the switch side and then
> changed the lagg config from "lacp" to "roundrobin", and so far so good.
> On the switch side it looks like member ports were randomly bounding in the
> LACP bundle, and when I'd tcpdump an interface I wouldn't see anything
> until another LACP&LLDP packet came in.
>
> So something seems to be broken with lagg's LACP support recently.  The
> good news is I don't think the route caching is causing this problem.  I'll
> put it back in and retest to make sure though.
>
>

Glad to hear I was in error.
-M


> Thanks for the help!
> -Dustin
>
> On Tue, Apr 19, 2016 at 6:15 PM, K. Macy <kmacy at freebsd.org
> <javascript:_e(%7B%7D,'cvml','kmacy at freebsd.org');>> wrote:
>
>> On Mon, Apr 18, 2016 at 10:45 PM, Eggert, Lars <lars at netapp.com
>> <javascript:_e(%7B%7D,'cvml','lars at netapp.com');>> wrote:
>> > I haven't played with lagg+vlan+bridge, but I briefly evaluated XL710
>> boards last year (
>> https://lists.freebsd.org/pipermail/freebsd-net/2015-October/043584.html)
>> and saw very poor throughputs and latencies even in very simple setups. As
>> far as I could figure it out, TSO/LRO wasn't being performed (although
>> enabled) and so I ran into packet-rate issues.
>> >
>> > I basically gave up and went with a different vendor. FWIW, the XL710
>> boards in the same machines booted into Linux performed fine.
>> >
>>
>> FWIW, NFLX sees performance close to that of cxgbe (by far the best
>> maintained, best performing FreeBSD 40G driver) with an iflib
>> converted driver. The iflib updated driver will be imported by 11 but
>> won't become the default driver until 11.1 for wont of QA resources at
>> Intel.
>>
>> -M
>>
>
>