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RE: [802.3ae] WAN distance

Hi, Steve,

The 40 km maximum distance referred to is that
of a single link (i.e., one pair of fibers
between one pair of PHYs). What people do with
regenerators (O/E/O) is outside the scope of
the standard.

10GBASE-LW4 is no longer defined.


- Tom Alexander, PMC-Sierra
WIS Scribe

-----Original Message-----
From: Steve King [mailto:steve2100_2000@xxxxxxxxx]
Sent: Friday, November 30, 2001 11:14 AM
To: stds-802-3-hssg@xxxxxxxx
Subject: [802.3ae] WAN distance


In WAN PHY , it states that the max distance is 40km.
But now the optical signal can be transmitted over
600km with O/E/O?   why limit to 40km? 

Is 10GBAse-LW4 still defined?  



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