RE: [10GBASE-T] Auto-Negotiation Support
Rich, et. Al.,
I raised this issue at the SG in Vancouver. Bob Grow pointed out that
the auto-negotiation capabilities one chooses to support for a given
device is implementation specific and thus is not specified in the
standard. The way I see it, one vendor can choose to build a NIC that
will negotiate all speeds and another can build a NIC that only supports
10GBASE-T and as long as they use the same AN protocol (clause 28) to
interoperate that's fine. I'll but the lowest cost device that meets my
needs.
Best regards,
Mike
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Michael J. Bennett
Sr. Network Engineer
Lawrence Berkeley National Lab
Tel. 510.486.7913
www-lblnet.lbl.gov
> -----Original Message-----
> From: owner-stds-802-3-10gbt@majordomo.ieee.org
[mailto:owner-stds-802-3-
> 10gbt@majordomo.ieee.org] On Behalf Of Rich_Hernandez@dell.com
> Sent: Tuesday, January 14, 2003 9:34 AM
> To: David.Koenen@hp.com; Rich_Hernandez@dell.com
> Cc: stds-802-3-10gbt@ieee.org
> Subject: RE: [10GBASE-T] Auto-Negotiation Support
>
>
>
> 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 [mailto:David.Koenen@hp.com]
> Sent: Tuesday, January 14, 2003 10:24 AM
> To: Rich_Hernandez@exchange.dell.com
> Cc: stds-802-3-10gbt@ieee.org
> 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: Rich_Hernandez@dell.com [mailto:Rich_Hernandez@dell.com]
> Sent: Tuesday, January 14, 2003 9:03 AM
> To: stds-802-3-10gbt@ieee.org
> 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,
> IPMI).
>
>