It’s a thing: http://lasermotive.com/products/power-over-fiber/ http://www.jdsu.com/en-us/power-over-fiber/Pages/default.aspx#.VFzWX8nBNOA http://www.fiberopticlink.com/Products/Power_Over_Fiber/PoF_main.html
From: The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto:[email protected]] On Behalf Of Frank Sweetser Sent: Friday, November 7, 2014 9:05 AM To: [email protected] Subject: Re: [WIRELESS-LAN] Potentially big news for the 11ac minded concerned with cabling I'm having quite a bit of fun imagining *power* over fiber to the AP ;-) On November 7, 2014 6:02:08 AM PST, Lee H Badman <[email protected]<mailto:[email protected]>> wrote: I don't disagree that even at the lofty data rates promised by the beefier allowed specs in 11ac, you'd still be hard-pressed to saturate a single Gig uplink in the real world of wireless- even where dual-band APs are used. But the WLAN industry created a messaging problem for themselves. With the high-octane hype that fuels Wi-Fi systems marketing, you can't get people all worked up about 11ac being "6.7 Gbps Wi-Fi, the Ethernet killer! Woo woo!" and then follow it up with "oh, BTW, you still only need the same uplink required for 11n... please don't ask us to explain." I like the the innovation of multi-Gig on a single UTP, and I'm all for anything that legitimately cuts down on cable counts, port counts, and link aggregation when you have thousands of APs deployed. If you buy into needing/wanting more than 1 Gig to your 11ac APs, multi-Gig to me is the most reasonable option. Can you imagine the hell of fiber to the AP! ? -Lee Lee H. Badman Network Architect/Wireless TME ITS, Syracuse University 315.443.3003 ________________________________ From: The EDUCAUSE Wireless Issues Constituent Group Listserv <[email protected]<mailto:[email protected]>> on behalf of James Andrewartha <[email protected]<mailto:[email protected]>> Sent: Thursday, November 6, 2014 9:11 PM To: [email protected]<mailto:[email protected]> Subject: Re: [WIRELESS-LAN] Potentially big news for the 11ac minded concerned with cabling On 07/11/14 02:00, Frank Sweetser wrote: I would strongly encourage everyone to bug all of their vendors about where this is on their roadmap. I've been asking ours, and they haven't made any commitments yet but they're all well aware of it. Our AM at Extreme hinted that 2.5Gbps will be coming in their new stackables which are due next year. 2.5GBps ethernet has been a thing for 10 years, but only on PCBs as a single lane of XAUI. I'd still argue YAGNI in a real-world environment that is limited to 40MHz channels, given that 80MHz and 160MHz don't allow for a lot of channel re-use. So then 40MHz with 8 spatial streams peaks at 1.6Gbps theoretical with all clients within 20ft of the AP. Add in overheads, 256QAM being unusable at with MU-MIMO [1] and a bit of clients sending (which I believe can't be MU-MIMO) and you're well under 1Gbps again. Even if we assume a single 3SS client, 256 QAM and 80MHz channels you're looking at 1.3GBps theoretical, which again is going to be under 1GBps. IMHO, if you really want to give good performance to everyone, install dense single-5GHz-radio APs with 1Gbps links rather than trying to push theoretical boundaries for just a few users. [1] http://www.cisco.com/c/en/us/products/collateral/wireless/aironet-3600-series/white_paper_c11-713103.html -- James Andrewartha Network & Projects Engineer Christ Church Grammar School Claremont, Western Australia Ph. (08) 9442 1757 Mob. 0424 160 877 ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/. ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/. -- Sent from my Android device with K-9 Mail. Please excuse my brevity. ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
