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RE: [10GBASE-T] Auto-Negotiation Support

Rich and David,

Study group is considering Auto-Negotiation for 10GBase-T. There is the 
desire to support 10G/1G/100 with Auto-Negotiation.  There has been 
discussions on how to achieve Auto-Negotiation.  The cost implication to 
enhance Auto-Neg state machine to cover 10GBase-T will be negligable.


At 11:34 AM 1/14/2003 -0600, wrote:

>But, what if is not just a stand alone NIC? I can see embedded applications
>that would require operation in low power modes. Why limit the applications?
>Is there a significant cost associated with the trade off of supporting
>auto-negotiation at 100/1000/10000 Mbps vs. 1000/10000 Mbps. If so, can
>someone clarify the cost implications?
>-----Original Message-----
>From: Koenen, David []
>Sent: Tuesday, January 14, 2003 10:24 AM
>Subject: RE: [10GBASE-T] Auto-Negotiation Support
>Microsoft has the only WOL support requirement I know of.  It is an optional
>feature in PCI/PCI Power Management Specs.  Microsoft's requirement is that
>the Desktop/Server support WOL on a least one NIC.  That can be accomplished
>by most all of the Fast (10/100) or Gigabit (10/100/1000T) embedded or
>standup NICs today and possibly 1000SX in the near future.  We're
>considering the 10GBase-T to be a high speed, stand-alone option NIC.  In
>which case, it doesn't require WOL.
>: djk
>-----Original Message-----
>From: []
>Sent: Tuesday, January 14, 2003 9:03 AM
>Subject: [10GBASE-T] Auto-Negotiation Support
>Is the study group considering the PCI and PCI-E power management
>requirements for an add-in adapter implementation of 10GBASE-T? To my
>knowledge the low power management requirement can only be met by the
>current 1000Base-T controllers when running at 10/100 Mpbs. Hence, I can see
>the need for supporting auto-negotiation that includes 100Base-T and
>1000Base-T. The controller should be able to negotiate down to 100 Mbps when
>operating in a lower power mode i.e. Wake on LAN or remote management(ASF,

Nariman Yousefi
Senior Director Networking Engineering

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