Date: Wed, 10 Mar 2010 13:25:32 +0700 From: Vitaliy Ovsyannikov <v.ovsyannikov@kr.ru> To: "Steven Hartland" <killing@multiplay.co.uk> Cc: FreeBSD Net <freebsd-net@freebsd.org> Subject: Re: kern/141646: [em] em(4) + lagg(4) + vlan(4) generatesISL-tagged frames instead of 802.1q-tagged frames Message-ID: <1036623459.20100310132532@kr.ru> In-Reply-To: <398DD47A113342D78637D600C0C4C47B@multiplay.co.uk> References: <201001291920.o0TJKAw9005498@freefall.freebsd.org><2a41acea1001291447n5852f5b4h193d3ad6dff9faac@mail.gmail.com> <20100129235911.GA67110@mr-happy.com> <398DD47A113342D78637D600C0C4C47B@multiplay.co.uk>
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> ----- Original Message -----
> Since your using lagg there Jeff have you done on perf testing at
> all, when I tested here dual em0 + lagg + lacp =3D> cisco 6509 although
> all seemed to negotiate correctly, balancing wasn't working at all.
> So I'm wondering if you see the same behaviour or if its just me?
Balancing depends on src/dst mac/ip. E.g. packets between different
IPs are going thru different interfaces. It seems you are using iperf
to generate traffic flow between IP1 and IP2 so this is wrong case.
I've successfully patched 8.0-REL and it looks very happy with dot1q
vlans on lagg. Here are my results based on regular Internet traffic.
Env:
FreeBSD agw3.local 8.0-RELEASE-p2 FreeBSD 8.0-RELEASE-p2 #1:
Tue Mar 9 09:53:53 KRAT 2010 root@local:/usr/obj/usr/src/sys/KERNEL i=
386
There are some vlans on lagg0:
#ifconfig | grep vlan | grep lagg0 | wc -l
52
lagg0: flags=3D8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 15=
00
options=3D9b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM>
ether 00:11:0a:5a:5e:5a
media: Ethernet autoselect
status: active
laggproto lacp
laggport: em3 flags=3D1c<ACTIVE,COLLECTING,DISTRIBUTING>
laggport: em2 flags=3D1c<ACTIVE,COLLECTING,DISTRIBUTING>
laggport: em1 flags=3D1c<ACTIVE,COLLECTING,DISTRIBUTING>
laggport: em0 flags=3D1c<ACTIVE,COLLECTING,DISTRIBUTING>
agw3# netstat -I lagg0 -w1
input (lagg0) output
packets errs bytes packets errs bytes colls
24395 0 18251427 24390 0 18340400 0
37221 0 29695929 37091 0 29594257 0
agw3# netstat -I em0 -w1
input (em0) output
packets errs bytes packets errs bytes colls
3432 0 1999523 5768 0 5191905 0
4381 0 2746333 6874 0 5656798 0
agw3# netstat -I em1 -w1
input (em1) output
packets errs bytes packets errs bytes colls
7101 0 5874769 9932 0 8027032 0
7815 0 6604168 9525 0 7590696 0
agw3# netstat -I em2 -w1
input (em2) output
packets errs bytes packets errs bytes colls
7857 0 6213003 7230 0 4975652 0
9461 0 7349928 7758 0 5474243 0
agw3# netstat -I em3 -w1
input (em3) output
packets errs bytes packets errs bytes colls
7505 0 6013276 9584 0 7213921 0
7571 0 5920826 10285 0 7205087 0
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