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Re:[802.3ae] Wan Interface Sublayer




Mike,
Option (4) is the correct answer. SONET and WIS must
stay on their own network. A network device called
"ELTE" is doing the bridging between the WIS net and
the SONET.
James
---  > -----Original Message-----

> From: Ayers, Mike [mailto:Mike_Ayers@xxxxxxx]
> Sent: Friday, August 24, 2001 3:16 AM
> To: stds-802-3-hssg@xxxxxxxx
> Subject: RE: [802.3ae] Wan Interface Sublayer
> 
> 
> 
> 
> > From: Jonathan Thatcher 
> > Sent: Thursday, August 23, 2001 04:49 PM
> 
> > The entire jitter specification and test
> methodology for 
> > SONET is different
> > than in 802.3ae. This is due, in part, to the
> objectives for the two
> > standards organizations and the history of the
> groups. In the 
> > case of SONET,
> > a primary objective is to limit jitter propagation
> (yes, this is a
> > simplification); in 802.3ae, the primary objective
> is plug 
> > and play (no
> > engineered links; no jitter propagation). 
> 
> 	Okay, but what does this translate to in terms of
> interoperability?
> I see four possibilities:
> 
> 	1.)  WIS will always route well over SONET, but
> SONET can not be
> routed over XGBASE(name?) networks.
> 
> 	2.)  WIS and SONET can run on each others'
> networks, but distances
> must be kept relatively short and number of hops
> relatively low to meet
> jitter/clocking specs.
> 
> 	3.)  SONET will always route well over
> XGBASE(name?) networks, but
> WIS can not be routed over SONET networks.
> 
> 	4.)  WIS and SONET must stay on their own networks.
> 
> 	Which would it be?
> 
> 	Thanks all,
> 
> 
> /|/|ike


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