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802.3af

I have had conflicting information about the use of 802.3af power over ethernet at 1000base-T on Cat5E cable. Some people tell me there is no problem, other says that it is not supported. I have googled and read the 802.3af spec and it does seem to be supported. Can anyone shed any light on the current status. I am aware that 802.3at POE+ is designed to operate at a higher power and at gigabit speeds, but is the current situation just down to individual manufacturers.

tia garry

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garry
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IEEE 802.3af is no longer, so you need to go to Clause 33 or 802.3-2005. Clause 33 is in with the 100 Mb/s Ethernet clauses, but it applies to all twisted pair POE options, which means from 10 to 1000 Mb/s, at least for now.

Bert

Reply to
Albert Manfredi

many thanks

garry

Reply to
garry

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