Issue with igb and lagg (was Re: Problem with link aggregation + sshd)

[David DeSimone]

Daniel Eischen <deischen at freebsd.org> wrote:
>
> My rc.conf is something like this:
> 
> #
> # For now, force ath0 to use the same MAC address as xl0.
> # This works around a bug where lagg is unable to set the
> # MAC address of the underlying wlan0 interface.
> #
> ifconfig_ath0="ether 01:02:03:04:05:06"
> wlans_ath0=wlan0
> ifconfig_wlan0="ssid SSID_FOO_NAME WPA"

I hope the above isn't literally what you're using for your MAC address.
The first octet in particular, because it has LSB set to 1, will be
treated as a multicast address, and many routers and switches will not
believe it when it's given as an ARP reply, or as a source address for
traffic.  I'm hoping it's just an example you substituted so as not to
reveal your actual MAC.

When making up MAC addresses, keep the LSB of the first octet at zero
(required) and set the next bit to 1 (optional, but a good practice).
So first octet should be 02, 06, 8a, 9e, etc... any even number,
preferably multiple of four, plus two.


> ifconfig_xl0="up"
> closed_interfaces="lagg0"
> ifconfig_lagg0="laggproto failover laggport xl0 laggport wlan0"
> ifconfig_lagg0_alias0="inet 10.0.0.4 netmask 0xffffff00"
> 
> I use aliasX to add the address and netmask.
> 
> -- 
> DE

-- 
David DeSimone == Network Admin == fox at verio.net
  "I don't like spinach, and I'm glad I don't, because if I
   liked it I'd eat it, and I just hate it." -- Clarence Darrow


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