bonding + vlan (without untagged address)

[Matty Sarro]

Any reason you aren't letting the switch control vlan access?
On Jan 28, 2011 7:49 AM, <sub at nryc.fr> wrote:
> Hello,
>
> I have a server with two network cards, each card is plugged on a switch
> that as a default (untagged) network + a number of VLANs (tagged).
>
> I'd like to bond the two interfaces and configure an IP address *only*
> on a tagged network, not on the default one.
>
> I tried to use "eth0", "eth1" and "bond0" as "dummy" interfaces with no
> IP configured and "bond0.<vlan_ID>" as the real interface.
>
> These are my configuration files :
>
> /etc/modprobe.d/bonding.conf:
> =============================
> alias bond0 bonding
> options bond0 mode=1 miimon=100
>
> /etc/sysconfig/network-scripts/ifcfg-eth0
> =========================================
> DEVICE="eth0"
> ONBOOT="yes"
> BOOTPROTO="none"
> SLAVE="yes"
> USERCTL="no"
> MASTER="bond0"
>
> ("ifcfg-eth1", is the same as "ifcfg-eth0 except" for the "DEVICE")
>
> /etc/sysconfig/network-scripts/ifcfg-bond0
> ==========================================
> DEVICE="bond0"
> BOOTPROTO="none"
> ONBOOT="yes"
> USERCTL="no"
>
> /etc/sysconfig/network-scripts/ifcfg-bond0.<vlan_ID>
> ====================================================
> DEVICE="bond0.<vlan_ID>"
> BOOTPROTO="dhcp"
> ONBOOT="yes"
> VLAN="yes"
> USERCTL="no"
>
> When I boot the server, eth0 and eth1 aren't going up, bond0 exists but
> complains that eth0/eth1 are not present and bond.<vlan_ID> is not up.
>
> If I connect to the server with a KVM console and manually start the
> remaining interfaces (ifup eth0 / ifup eth1 / ifup bond0.<vlan_ID>, it
> works!
>
> If I configure a IP address for bond0, it also works at bootime, but I
> don't want to do that.
>
> Do you have an idea why eth0 and eth1 are not going up when bond0 as not
> IP address? Again, it works if I manually start the interfaces.
>
> I tried on Red Hat Enterprise Linux 5.6 and 6.0, both 64 bits edition.
>
> Regards,
>
> Nicolas
>
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