What brand of APs are you using? Aruba APs will only accept PoE from the first Ethernet port.
Bruce Osborne Network Engineer - Wireless Team IT Network Services (434) 592-4229 LIBERTY UNIVERSITY Training Champions for Christ since 1971 -----Original Message----- From: John Center [mailto:john.cen...@villanova.edu] Sent: Monday, February 10, 2014 5:44 PM Subject: Re: How many drops 802.11ac phase 2 Hi Philippe, Another reason for 2 drops is resiliency. I envision connecting the AP's 2 ports to a 2-switch stack. We rarely see the need for redundant power supplies in an edge switch, but have seen failure on a switch ASIC cause one or more ports to go dead. With 2 connections, one switch having issues won't take out the AP. I think LAG'g both ports across the stack & supporting LACP will become a future requirement. -John -- John Center Villanova University On 02/07/2014 10:21 AM, Hanset, Philippe C wrote: > Is the main justification for two drops due to power/bandwidth/the-two? > > With many services and most killer apps going to the cloud, I would > suspect that the bandwidth to the WAN is so limiting, that this excess > of capacity on Wireless is a complete overkill (a vendor driven > non-sense). > > Yes, those 802.11ac Phase2 APs can generate a lot more than 1 Gbps, > but that's is shared bandwidth (half-duplex), and your uplink is 1 > Gbps full-duplex (2 Gbps in Cisco math as we said in the old days). > > So, you really plan to also uplink your switches with 40 Gbps, and > then a core at many times 100 Gbps, all connected to your ISP at a few > Gbps... something doesn't add up here. > > Am I alone making bad accounting here? > > Philippe Hanset > www.eduroam.us <http://www.eduroam.us> > > > > On Feb 7, 2014, at 9:58 AM, James Robert Kennon <jken...@gsu.edu > <mailto:jken...@gsu.edu>> > wrote: > >> We just made a call on a new building and decided not to incur cost >> of >> 2 cables per drop at this time. Hope we don't regret it later. >> >> >> >> From: Lee H Badman <lhbad...@syr.edu <mailto:lhbad...@syr.edu>> >> Reply-To: The EDUCAUSE Wireless Issues Constituent Group Listserv >> <WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU >> <mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>> >> Date: Fri, 7 Feb 2014 14:56:31 +0000 >> To: <WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU >> <mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>> >> Subject: Re: [WIRELESS-LAN] How many drops 802.11ac phase 2 >> >> We'll be running two, until some sanity emerges. >> >> >> >> --------------------------------------------------------------------- >> --- >> *From:* The EDUCAUSE Wireless Issues Constituent Group Listserv >> <WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU >> <mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>> on behalf of Brian David >> <brian.da...@bc.edu <mailto:brian.da...@bc.edu>> >> *Sent:* Friday, February 7, 2014 9:54 AM >> *To:* WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU >> <mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU> >> *Subject:* [WIRELESS-LAN] How many drops 802.11ac phase 2 >> >> All, >> >> I wanted to see how many people were planning on running 2 drops to >> 802.11ac phase 2 access points? >> >> Currently we are just doing a one for one swap when replacing an >> older a/b/g AP's with 802.11ac phase 1 AP's >> >> When you have new construction, do you plan on running 2 drops so >> when phase 2 come into play you will be all set for it? >> >> >> >> */Brian J David/* >> >> */Network Systems/* >> >> */Boston College/* >> >> <image003.jpg> >> >> >> >> ********** 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/. ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
