[AusNOG] dot1q-tunnel and cisco nexus 5000s

Sean K. Finn sean.finn at ozservers.com.au
Thu Mar 21 17:19:49 EST 2013

I, too, am interested in hearing *anyones* opinions of dragging tagged vlan traffic across a network like this without the use of QinQ.

Has anyone had experiencing using other protocols, for example, Ethernet over IP, or VPLS or any other of the billion protocol abstractions to achieve something like this?

Does anyone have any *theories* of how to drag VLAN traffic tagged across a non QinQ aware switch setup, for example, over layer 3 perhaps?

All thoughts welcome.


-----Original Message-----
From: ausnog-bounces at lists.ausnog.net [mailto:ausnog-bounces at lists.ausnog.net] On Behalf Of David Gwynne
Sent: Thursday, March 21, 2013 3:02 PM
To: Peter Tiggerdine
Cc: ausnog at lists.ausnog.net
Subject: Re: [AusNOG] dot1q-tunnel and cisco nexus 5000s

On 21/03/2013, at 2:54 PM, Peter Tiggerdine <ptiggerdine at gmail.com> wrote:

> Because it's a data centre switch not a services aggregation switch with the primary purpose of unified fabric.

thats a very arbitrary distinction to me.

> What's the use case for q-in-q in datacentres?

we wanted to support the provisioning of private networks between groups of virtual machines, all hosted in the same DC. it would have been nice to simply configure the vlan tags on the hypervisors and let them get tunnelled over the single vlan all the hypervisors are plugged together with on the 5ks. without q-in-q we need to put the vlans on the switches, which is annoying where we are cos we can't arbitrarily allocate tags.


> On Thu, Mar 21, 2013 at 2:46 PM, David Gwynne <loki at animata.net> wrote:
> does anyone know why q-in-q isnt available on nexus 5000 kit?
> dlg
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