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Re: [Xen-API] XCP 1.6 bonding, bond vs bridge

  • To: xen-api@xxxxxxxxxxxxx
  • From: George Shuklin <george.shuklin@xxxxxxxxx>
  • Date: Wed, 02 Jan 2013 07:59:45 +0400
  • Delivery-date: Wed, 02 Jan 2013 04:00:05 +0000
  • List-id: User and development list for XCP and XAPI <xen-api.lists.xen.org>

XCP by default use OpenVSwitch, which capable to provide bonding.

bridge (xenbrX) is placed between bonding and virtual interfaces.

On 27.12.2012 21:30, Alexandre Kouznetsov wrote:
Hello again.

(this is a related to
http://lists.xen.org/archives/html/xen-api/2012-12/msg00147.html )

After I have create a test bond from XenCenter, I have noticed that what was actually created on the host is not a "bond" (as described in http://www.kernel.org/doc/Documentation/networking/bonding.txt ), but a bridge. This is confusing, I was expecting something like a 802.3ad interface, that would need cooperation from the the switch (group ports into a LAG).

I guess I'm missing something. Is there some layer behind this bridge, that makes it act like a bond? Does it need any special configuration at switch's side? Why do they call "bond" a bridge, anyway? Surely there is a good reason, but I'm curious which is.


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