Re: How to use lagg and wlan together

On Thu, Aug 28, 2008 at 04:32:02PM -0400, Daniel Eischen wrote:
> On Thu, 28 Aug 2008, Andrew Thompson wrote:
> 
>> On Tue, Aug 26, 2008 at 11:41:20AM -0400, Daniel Eischen wrote:
>>> I'm trying to get a lagg interface with failover to work with bfe0
>>> and wlan0.  The master port is bfe0, with failover to wlan0.  The
>>> wlan0 interface is ath0.
>>> 
>>> I can get both wlan0 and bfe0 to work independently without being
>>> lagg devices, but only bfe0 works when wlan0 and bfe0 are in a
>>> lagg interface.  In other words, when I pull the plug on bfe0, it
>>> does not failover to wlan0.
>>> 
>>>   $ ifconfig -a
>>>   ath0: flags=8802<BROADCAST,SIMPLEX,MULTICAST> metric 0 mtu 2290
>>>           ether 00:11:f5:9d:54:f5
>>            ^^^^^^^^^^^^^^^^^^^^^^^
>>>           media: IEEE 802.11 Wireless Ethernet autoselect mode 11g
>>>           status: associated
>>>   bfe0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
>>>           options=8<VLAN_MTU>
>>>           ether 00:14:22:ae:bc:98
>>>           media: Ethernet autoselect (100baseTX <full-duplex>)
>>>           status: active
>>>           lagg: laggdev lagg0
>>>   lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
>>>           inet6 fe80::1%lo0 prefixlen 64 scopeid 0x4
>>>           inet6 ::1 prefixlen 128
>>>           inet 127.0.0.1 netmask 0xff000000
>>>   lagg0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
>>>           ether 00:14:22:ae:bc:98
>>            ^^^^^^^^^^^^^^^^^^^^^^^
>>>           inet 10.0.0.7 netmask 0xffffff00 broadcast 10.0.0.255
>>>           media: Ethernet autoselect
>>>           status: active
>>>           laggproto failover
>>>           laggport: wlan0 flags=0<>
>>>           laggport: bfe0 flags=5<MASTER,ACTIVE>
>>>   wlan0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
>>>           ether 00:14:22:ae:bc:98
>>            ^^^^^^^^^^^^^^^^^^^^^^^
>> 
>> I wonder if it becuase the lagg driver sets the mac address of all its
>> interfaces to the same value, this has not been propagated back up to
>> the ath0 interface.
> 
> Ahh, I didn't notice this.
> 
>> I wonder if this is the right way to do things.
> 
> Well, it stops complaints on routers, and perhaps switches,
> when an IP's MAC address changes.
> 
> Or perhaps wlan (or any cloned device?) should relay the
> MAC address change down to the lower level device?

To verify this you could set the mac to the wireless interaces value,

ifconfig lagg0 ether 00:11:f5:9d:54:f5
ifconfig lagg0 down/up


Andrew