[rbridge] Consensus Check: Point to Point links

[Silvano Gai]

A frame that is switched by a Bridge is NEVER addressed to the Bridge.
An encapsulated frame that is switched by an RBridge is ALWAYS addressed
to the RBridge.

I understand management frames; it is not what we are discussing here.

Using a reserved MAC address or ignoring the MAC address on
point-to-point links achieves the same goal. Pick one, I don't care.

This is a simple and effective solution; I don't understand the need to
deny it.

-- Silvano


> -----Original Message-----
> From: Eric Gray [mailto:eric.gray at ericsson.com]
> Sent: Thursday, October 04, 2007 5:29 AM
> To: Silvano Gai; Joe Touch
> Cc: Rbridge at postel.org; Caitlin Bestler
> Subject: RE: [rbridge] Consensus Check: Point to Point links
> 
> Silvano,
> 
> 	It is not exactly true that bridges are never addressed at the
> MAC layer.  Consider, for example, how bridges are typically managed
> using SNMP, or HTML.
> 
> 	However, the case is still general, because everything you say
> about RBridges - and the likelihood that they might be connected via
> P2P links - similarly applies to other devices (L2 end-stations, such
> as routers, for example.  And objecting that it may (or may not) be
> easy for these devices to determine that a link is P2P is an argument
> that applies equally to RBridges.
> 
> 	I think it is not possible at this point to argue that there is
> consensus to do this work here, in the TRILL working group.
> 
> --
> Eric Gray
> Principal Engineer
> Ericsson
> 
> > -----Original Message-----
> > From: rbridge-bounces at postel.org
> > [mailto:rbridge-bounces at postel.org] On Behalf Of Silvano Gai
> > Sent: Thursday, October 04, 2007 1:56 AM
> > To: Joe Touch
> > Cc: Rbridge at postel.org; Caitlin Bestler
> > Subject: Re: [rbridge] Consensus Check: Point to Point links
> >
> > Because Bridges are never addressed at the MAC layer,
> > RBridges instead are!
> >
> > -- Silvano
> >
> > > -----Original Message-----
> > > From: Joe Touch [mailto:touch at ISI.EDU]
> > > Sent: Wednesday, October 03, 2007 10:48 PM
> > > To: Silvano Gai
> > > Cc: Dinesh G Dutt; Rbridge at postel.org; Caitlin Bestler
> > > Subject: Re: [rbridge] Consensus Check: Point to Point links
> > >
> > >
> > >
> > > Silvano Gai wrote:
> > > > Joe,
> > > >
> > > > Nobody is asking "to specify a new, non-ethernet link layer."
> > > >
> > > > We are just asking to have a reserved MAC address that means
"the
> > other
> > > > end of the link".
> > > >
> > > > The frame is still 100% compliant with Ethernet.
> > >
> > > If regular ethernet and regular bridges don't need this, why do
> > rbridges?
> > >
> > > (bridges are already connected by such pt-pt links)
> > >
> > > Joe
> >
> >
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> >