AW: [PWE3] RE: [802.1] 802.1ad Customer FCS Retention

[Heiles Juergen <juergen.heiles@siemens.com>]

Keith,

see my comments below.

Regards

Juergen



> -----Ursprungliche Nachricht-----
> Von: Keith Knightson [mailto:kgk@igs.net]
> Gesendet: Montag, 24. November 2003 15:37
> An: neil.2.harrison@bt.com; jmessenger@advaoptical.com; 
> nfinn@cisco.com
> Cc: mark@interflect.com; stds-802-1@ieee.org; pwe3@ietf.org;
> Maarten.Vissers@alcatel.de; alan.mcguire@bt.com
> Betreff: RE: [PWE3] RE: [802.1] 802.1ad Customer FCS Retention
> 
> 
> The PW acts liike it is the internal part of a bridge, 
> despite what you say.
> 

The PW acts like and is a link between two bridges.


> In the VPLS work the service is described as a logical bridge, which 
> is exactly what it is. It is a distributed bridge using PWs to effect 
> is distribution to multiple ports. It uses PWs in excactly the same 
> way,  just prefaced by selective forwarding functions. Bridges act as 
> relays not interworking units, and did so long before G.805/9 or 
> definition of NI was invented.
>

VPLS is a (sub) network of bridges interconnected by PW links. 

 
> I would still maintain that  you cannot expect more from a PW than 
> you would get from a remote bridges connected directly by another LAN 
> or a real piece of wire.
> 
> Regards
> 
> Keith
> 
> 
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