Re: [WIRELESS-LAN] Aruba AP Power Issue?
On Wed, 7 Nov 2012, Chuck Enfield wrote: Hi Folks, We’re experiencing a significant number of problems where our PoE switches report that Aruba AP-105s are drawing more than 15.4W. When this happens our switches shut off the power to the offending AP. The problem is intermittent, but seems to occur repeatedly on the same APs, while never occurring on other APs. Our diagnostics have eliminated excessive loss in the cabling as the culprit, which seems to leave two possibilities. Either there are some Aruba AP-105s which are using more power than they are supposed to, or our switches are incorrectly measuring the power consumption of the APs. If the APs are at fault, it’s unlikely that we would be the only ones with this problem. Is anybody else having any issues with Aruba AP-105s drawing more than 15.4W? Yes, We have a few ap105s sitting in a box with this exact issue. It doesn't appear the be the switch in that we have seen it occur on both cisco 3560-X and juniper ex3300 switches. Jason Thanks, Chuck Enfield Sr. Communications Engineer Telecommunications Networking Services The Pennsylvania State University 110H, USB2, UP, PA 16802 ph: 814.863.8715 fx: 814.865-3988 ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/. /* Jason Cash IT/Network and Systems Services University of Delaware, Newark Delaware e:c...@udel.edu v: 302-831-0461 */ ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
Re: [WIRELESS-LAN] Wifi Support Staff
On Tue, 26 Jul 2011, Brian Deem Williams wrote: Just as an inquiry I would like to know what kind of support staff other universities have for their Wi-Fi environment. Is there a formula that you use (i.e. X number of users = Y number of staff, or X number of access points = Y number of staff)? We have grown almost exponentially in the last couple of years (From 300 access points to 1000+ access points, 2000+ access points total planned within the next 12 months) and I’m curious as to the number of staff members dedicated to supporting the wifi (both from an engineering standpoint and from a helpdesk point of view) that other educational facilities have deemed necessary. Any input would be greatly appreciated! We are supporting ~1800 waps with an aruba setup. We have 1 primary engineer assigned to maintaining the controllers (.4fte?) and several other router/switch/programmer folks backing him up at some level. For installs we have a tech group that installs telephones, waps, switches, etc. This group also serves as second level support after a helpdesk. 95% of the time this works well. We could use more engineer/programmer time to roll out fancier back-end integration and to help in difficult to debug rare but tricky RF interference issues. Jason /* Jason Cash IT/Network and Systems Services University of Delaware, Newark Delaware e:c...@udel.edu v: 302-831-0461 */ ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
Re: [WIRELESS-LAN] Aruba vs HP vs Meraki
On Fri, 2 Apr 2010, Ethan Sommer wrote: We are considering replacing our 200+ AP wireless infrastructure with a controller based 802.11n system. I believe we have narrowed it down to Aruba, HP Procurve (we use HP switch gear), and Meraki. I have two questions: 1. Are there any hidden costs we should watch out for with any of these (particularly Aruba.) Will we hit major costs other than the up front cost for the APs and the controllers? When we purchased some aruba gear the PEF was licensed by user. We ended up having to upgrade this license as usage increased. This is supposed to be changing in their new license model. 2. I know a lot of schools are very happily using Aruba, but I haven't heard of any schools using HP and very few using Meraki. Are there any schools who have gone with Aruba and regretted it? If so, why? No significant regrets. We have ~600 aruba waps and 3 m3 controllers. We have also deployed cisco and others over the years. I don't believe we have ever had a hardware failure of an aruba wap and few if any cisco wap failures. These units are installed in dorms, libraries, dining halls, labs, etc. I can't say that we go out of our way to install them in piles of lint, oily rags, or battle with them. If I was that concerned about the location I would use a protective enclosure. If a wifi-equipment-only battle breaks out I claim the vivato panel for a shield. Software stability, failover, and scaling top the list of my concerns when looking at a controller based solutions. When we deployed fat waps, a misbehaving unit only annoyed a small number of customers. A bad OS update to a controller can make for a lng day. Jason Are there any schools out there using HP Procurve (formerly Colubrius) or Merkai? What do you think of them? Did you have any surprises after you deployed? Ethan -- Ethan Sommer Associate Director of Core Services 507-933-7042 somm...@gustavus.edu ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/. /* Jason Cash IT/Network and Systems Services University of Delaware, Newark Delaware e:c...@udel.edu v: 302-831-0461 */ ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
