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

[Xu Zhe]

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