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RE: Layer 2 Switching Caps LSPs



Dimitri,

By Physical interface Ben means A single port (PHY +MAC). It is like a single TCP/IP port. You need another STANDARD function not defined in 802.3 to do the forwarding. AFAIK IEEE defines 802.1D for such function. Do you have any other Standard Forwarding function that this draft is targeting? 

-Shahram

> -----Original Message-----
> From: owner-ccamp@ops.ietf.org [mailto:owner-ccamp@ops.ietf.org]On
> Behalf Of Dimitri.Papadimitriou@alcatel.be
> Sent: Friday, February 04, 2005 2:26 PM
> To: Mack-Crane, T. Benjamin
> Cc: Dimitri.Papadimitriou@alcatel.be; Shahram Davari;
> dpapadimitriou@psg.com; David Allan; Adrian Farrel; ccamp@ops.ietf.org
> Subject: RE: Layer 2 Switching Caps LSPs
> 
> 
> 
> ben,
> 
> > As I think Sharam has noted, 1) is a physical interface.
> 
> i don't understand what you mean by 1) (= Ethernet 802.3) is 
> a "physical
> interface" please take a look at IEEE 802.3 to see that it defines the
> 
> 1.4.167 Media Access Control (MAC): The data link sublayer that is
> responsible for transferring data to and from the Physical Layer.
> 
> - as also depicted in Figure 2.1 and 2.2, where you will see 
> that PHY is
> just below the MAC sub-layer but the latter is not the "PHY" 
> - Fig 2.1 is
> rather explicit
> 
> 
>