Date: Mon, 9 Jul 2012 17:38:24 -0700 From: Adarsh Joshi <adarsh.joshi@qlogic.com> To: "freebsd-net@freebsd.org" <freebsd-net@freebsd.org> Subject: lacp lagg port flags do not show correctly resulting in poor traffic distribution/performance Message-ID: <5E4F49720D0BAD499EE1F01232234BA877435B2E28@AVEXMB1.qlogic.org>
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Hi,
I am trying to configure lacp lagg interfaces with 2 systems connected back=
to back as follows:
Ifconfig lagg0 create
Ifconfig lagg0 laggproto lacp laggport ql0 laggport ql1 192.168.100.1 netma=
sk 255.255.255.0
Sometimes, the lag interface comes up correctly but sometimes the laggport =
flags do not show properly. Instead of 1c<ACTIVE,COLLECTING,DISTRIBUTING>, =
it shows values of 18. I have seen similar issues reported on various forum=
s with no solution.
Looking at the lagg driver code and reading the standard, I thought the lag=
gport flags ( defined in if_lagg.h) are based on the LACP_STATE_BITS in fil=
e ieee8023ad_lacp.h. But the following ifconfig -v output does not make any=
sense to me.
My concern is that when all the interfaces show flags as 1c, the traffic is=
distributed across both the interfaces uniformly and I get aggregated thro=
ughput. If not, the traffic flows only on 1 interface.
Is this a bug? How do I solve this? Or am I doing something wrong?
I am using Free-BSD 9.0 release.
System 1:
# ifconfig -v lagg0
lagg0: flags=3D8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 15=
00
options=3D13b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,TSO4>
ether 00:0e:1e:08:05:20
inet 192.168.100.1 netmask 0xffffff00 broadcast 192.168.100.255
nd6 options=3D29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
media: Ethernet autoselect
status: active
groups: lagg
laggproto lacp
lag id: [(8000,00-0E-1E-08-05-20,0213,0000,0000),
(8000,00-0E-1E-04-2C-F0,0213,0000,0000)]
laggport: ql1 flags=3D18<COLLECTING,DISTRIBUTING> state=3D7D
[(8000,00-0E-1E-08-05-20,0213,8000,000F),
(FFFF,00-00-00-00-00-00,0000,FFFF,0000)]
laggport: ql0 flags=3D1c<ACTIVE,COLLECTING,DISTRIBUTING> state=3D3D
[(8000,00-0E-1E-08-05-20,0213,8000,000E),
(8000,00-0E-1E-04-2C-F0,0213,8000,000E)]
System 2:
# ifconfig -v lagg0
lagg0: flags=3D8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 15=
00
options=3D13b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,TSO4>
ether 00:0e:1e:04:2c:f0
inet 192.168.100.2 netmask 0xffffff00 broadcast 192.168.100.255
nd6 options=3D29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
media: Ethernet autoselect
status: active
groups: lagg
laggproto lacp
lag id: [(8000,00-0E-1E-04-2C-F0,0213,0000,0000),
(FFFF,00-00-00-00-00-00,0000,0000,0000)]
laggport: ql1 flags=3D1c<ACTIVE,COLLECTING,DISTRIBUTING> state=3D7D
[(8000,00-0E-1E-04-2C-F0,0213,8000,000F),
(FFFF,00-00-00-00-00-00,0000,FFFF,0000)]
laggport: ql0 flags=3D18<COLLECTING,DISTRIBUTING> state=3D3D
[(8000,00-0E-1E-04-2C-F0,0213,8000,000E),
(8000,00-0E-1E-08-05-20,0213,8000,000E)]
thanks
Adarsh
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