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George, This makes sense to me.
It enables a 10/100/1000BASE-T1 environment with PoDL where that makes sense, and enables us to define something else to address the other environments/applications. Regards Peter _______________________________________________
Peter Jones Cisco Systems
Principal Engineer 560 McCarthy Blvd. Campus Switching S/W Milpitas, CA, 95035 USA
Wrk: +1 408 525 6952 Mob: +1 408 315 8024
Email: petejone at cisco.com
Twitter: @petergjones LinkedIn: /in/petergjones _______________________________________________ From: George Zimmerman [mailto:george@xxxxxxxxxxxxxxxxxxxx]
Not taking on the daisy-chain issue just yet…. We seem to have consensus on a general power objective, but the question is whether we can/need to go further, particularly for automotive.
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Specify an optional power distribution technique for use over the 10 Mb/s single twisted pair link segments in conjunction with 10Mbps single-pair PHYs To enable a 10/100/1000BASE-T1 environment, it would be good to say something about PoDL in these circumstances. While there has been some controversy around how much we support/augment podl, I believe we have consensus that we could support
it on the shorter line applications, and the following would do this, while still allowing us to define a particular powering protocol for 10SPE on (at least) the long reach. Daisy chaining power could fit into that, for example. So, with that, I propose for discussion, the additional objective:
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Optionally support 802.3bu PoDL, with possible augmentation, on at least the 15m link segment George Zimmerman, Ph.D. President & Principal CME Consulting, Inc. Experts in Advanced PHYsical Communications 310-920-3860 |