RE: 802.17 RPR and L2 Ethernet interoperablity (Ethernet over RPR)

[Sam Stickland <sam_ml () spacething org>]

Thanks for the reply. Pretty much everyone has told me that it's vendor 
specific, although the implementation mentioned below sounds nice. Any 
chance of naming that vendor?

One question about this, the Q-in-Q tunnelling would have to take place on
the switch connected to the ring - what happens if the packet has already
been placed in a dot1Q tunnel? I haven't really worked much with dot1Q
tunneling - are their any know problems with extra tags? (aside from MTU 
issues, but I imagine most rings will support at least 9bytes)

Sam

On Tue, 6 Jul 2004, Michael Smith wrote:

> Hello:
>
> I think this is pretty provider-specific.  However, we are doing this
> right now with a particular vendor using their flavor of RPR.  The ring
> uses Q in Q tunneling in the core and all switches communicate directly
> to one another using .1Q encapsulated frames.  
>
> Mike
>
> > -----Original Message-----
> > From: owner-nanog () merit edu [mailto:owner-nanog () merit edu] On Behalf
> Of
> > sam_ml () spacething org
> > Sent: Tuesday, July 06, 2004 11:50 AM
> > To: nanog () nanog org
> > Subject: 802.17 RPR and L2 Ethernet interoperablity (Ethernet over
> RPR)
> > Hi,
> >
> > This is probably a fairly simply question, I'm probably just not quite
> > groking the layers involved here.
> >
> > If I had the following setup:
> >
> > Endstation A -- Switch A === RPR Ring === Switch B -- Endstation B
> >
> > could there be a VLAN setup such that Endstations A and B are both in
> it,
> > and can communicate as if they are on the same LAN segment? (And I
> mean
> > natively. ie. not using an MPLS VPN). ie. Will the switches involved
> > tranlate the different framing formats in use? Is this vendor
> dependent?
> > Sam