Thanks for your comments.

On 10/18/14, 12:32 PM, Ben Pfaff wrote:
On Sat, Oct 18, 2014 at 09:55:57AM -0400, Thomas F Herbert wrote:
On 10/17/14, 4:54 PM, Ben Pfaff wrote:
On Fri, Oct 17, 2014 at 01:19:33PM -0400, Dave Benson wrote:
On Fri, Oct 10, 2014 at 6:43 PM, Ben Pfaff<b...@nicira.com>  wrote:
...
...
My first thought is to define a new NXM_NX_VLAN_TPID that matches the
TPID, and for backward compatibility to imply a match on 0x8100 if it
is not given.

I don't understand your proposal at all.  It must be possible to
distinguish a match on an 0x88a8 tag from one on an 0x8100 tag.  How do
you propose to do that?
802.1ad (double tagged 0x88a8) vlans and 802.1q(single tagged 0x8100) vlans can co-exist and the name spaces can overlap so I absolutely agree that it is a problem. Adding a match on the inner "customer" TCI, such as NXM_NX_VLAN_CTCI would do it but matching on the TPID does have clearer semantics.


--
Thomas F. Herbert

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