[libvirt] [PATCH] web docs -- macvtap mode explanation

Eric Blake eblake at redhat.com
Wed Mar 3 17:00:43 UTC 2010

According to Stefan Berger on 3/3/2010 5:09 AM:
> This adds more information about the different macvtap device modes.
> +    <dl>
> +      <dt><code>vepa</code></dt>
> +      <dd>All VMs' packets are sent to the external bridge. Packets
> +      whose destination is a VM on the same host as where the
> +      packet originates from are sent back to the host by the VEPA
> +      capable bridge (today's bridges are typically not VEPA capable).</dd>

Given that VEPA is relatively new and not common yet, is it worth a link
to some external page giving more details about VEPA, or even just
spelling out the acronym once?

> +      <dt><code>bridge</code></dt>
> +      <dd>Packets whose destination is on the same host as where they
> +      originate from are directly delivered to the target macvtap device.
> +      Both origin and destination devices need to be in bridge mode
> +      for direct delivery. If either one of them is in <code>vepa</code> mode,
> +      a VEPA capable bridge is required.
> +      <dt><code>private</code></dt>
> +      <dd>All packets are sent to the external bridge and will only be
> +      delivered to a target VM on the same host if the are sent through an

s/the are/they are/

> +      external router or gateway and that device sends them back to the
> +      host. This procedure is followed if either the source or destination
> +      device is in <code>private</code> mode.</dd>
> +    </dl>
> +

Eric Blake   eblake at redhat.com    +1-801-349-2682
Libvirt virtualization library http://libvirt.org

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