netdev - stable bonding config

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Message-ID: <CANj2Ebc8+Uu6gW8=Jsb42Cr2Ry88cvys-DZrkeX8Rh+uvAsRAQ@mail.gmail.com>
Date:	Thu, 12 Jan 2012 21:31:44 -0500
From:	Simon Chen <simonchennj@...il.com>
To:	netdev@...r.kernel.org
Subject: stable bonding config

Hi all,

Not sure if this is the right place to ask, but I got very good
answers about this topic in the past...

I am mostly using Ubuntu 10.10. Each server has dual intel 10G NICs,
which I want to bond. I configured the switches to support 802.3ad.
Based on this post http://ubuntuforums.org/showthread.php?t=1595177, I
configure the server as:

/home/simon# cat /etc/modprobe.d/aliases.conf
alias bond0 bonding
options bonding mode=4 miimon=100 lacp_rate=1 downdelay=200
updelay=200 ad_select=1 xmit_hash_policy=1

/home/simon# cat /etc/network/interfaces
...
auto bond0
iface bond0 inet manual
        bond-slaves none
        bond-mode 4
        bond-miimon 100
        up /sbin/ifenslave bond0 eth2 eth3
        down /sbin/ifenslave bond0 eth2 eth3

auto eth2
iface eth2 inet manual
bond-master bond0
bond-primary eth2 eth3

auto eth3
iface eth3 inet manual
bond-master bond0
bond-primary eth2 eth3

auto bond0.200
iface bond0.200 inet static
  address ...
  vlan_raw_device bond0
==========================

However, after a reboot the bonding doesn't work immediately. In particular:

/home/simon# cat /proc/net/bonding/bond0
...
802.3ad info
LACP rate: fast
Aggregator selection policy (ad_select): bandwidth
Active Aggregator Info:
        Aggregator ID: 3
        Number of ports: 2
        Actor Key: 33
        Partner Key: 19
        Partner Mac Address: 00:00:00:00:00:00 <------bonding not working
======================================

The only magic to get it work that I know of, is to perform "rmmod
ixgbe" "modprobe ixgbe" and then "ifconfig eth2 0.0.0.0 up" "ifconfig
eth3 0.0.0.0 up" "ifdown bond0" "ifup bond0".

Is there a hassle-free bonding configuration that I can use? Or some
trick that I am not aware of?

Thanks.
-Simon
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