How to create vlan (four NIC into one) using lagg

[Boris Astardzhiev]

Hi Xu Zhe,

If I were you I would first of all check cables. They might be the cause.
Secondly, if cables are good, to me this report very much resembles a PR I
reported a
few weeks ago - http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/179926
Check its set and look at the patch I submitted. It's a pity there's no
response to it.

Greetings,
Boris


On Thu, Jul 25, 2013 at 3:55 PM, Xu Zhe <peterxu at cyphy.net> wrote:

> Hi, all,
>
> I am trying to use lagg to bind four 1Gb NIC into 4Gb one. I was testing
> this using two machines running FreeBSD 8.2, each of the machine has
> four 1Gb ethernet card, and connected correspondingly, means:
>
> MACHINE1 MACHINE2
> em0 <--------------------->em0
> em1 <--------------------->em1
> em2 <--------------------->em2
> em3 <--------------------->em3
>
> Then I created vlan called 'lagg0' on each machine using:
>
> ifconfig lagg0 create
> ifconfig lagg0 laggproto lacp laggport em0 laggport em1 laggport em2
> laggport em3
> ifconfig lagg0 1.1.1.1/24
> ifconfig lagg0 up
>
> And do this on MACH2 too, only change IP from 1.1.1.1 to 1.1.1.2.
>
> But I cannot ping each other, since none of the link is both active:
>
> MACHINE1
> # ifconfig lagg0
> lagg0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
>
> options=219b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4,WOL_MAGIC>
> ether 00:08:9b:d4:91:64
> inet 1.1.1.1 netmask 0xffffff00 broadcast 1.1.1.255
> media: Ethernet autoselect
> status: active
> laggproto lacp
> laggport: em3 flags=1c<ACTIVE,COLLECTING,DISTRIBUTING>
> laggport: em2 flags=18<COLLECTING,DISTRIBUTING>
> laggport: em1 flags=18<COLLECTING,DISTRIBUTING>
> laggport: em0 flags=18<COLLECTING,DISTRIBUTING>
>
> MACHINE2
> # ifconfig lagg0
> lagg0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
>
> options=219b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4,WOL_MAGIC>
> ether 00:08:9b:d3:72:60
> inet 1.1.1.2 netmask 0xffffff00 broadcast 1.1.1.255
> media: Ethernet autoselect
> status: active
> laggproto lacp
> laggport: em3 flags=18<COLLECTING,DISTRIBUTING>
> laggport: em2 flags=1c<ACTIVE,COLLECTING,DISTRIBUTING>
> laggport: em1 flags=1c<ACTIVE,COLLECTING,DISTRIBUTING>
> laggport: em0 flags=1c<ACTIVE,COLLECTING,DISTRIBUTING>
>
> So, em3 is active on MACHINE1 but not active on MACH2, while em0-em2 are
> active on MACH2 but not on MACHI1.
>
> What might be the problem?
>
> Thanks!
> Peter
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