I said co-channel, but I meant adjacent. Greg
On Wed, Nov 8, 2017 at 12:05 PM, Greg Briggs <[email protected]> wrote: > We have a couple locks on campus that use 802.15.4. I think it is a > Stanley product. I was told by the engineer who was trying to sell us on > the product campus wide, that it would cause no interference. (haha!) I > can confirm co-channel interference, but no user reported problems wifi > problems that i could specifically say were caused by that equipment. So > that statement was inaccurate, as I knew it would be, but only in a > boastful way. It also took a couple of visits an i want to say a couple of > months to get it to work. (I don't remember exactly) I have expressed to > our access staff that I do not like the deployment, and if I was the > deciding vote, I would say no to a proposal to deploy more like it. > > I was initially skeptical of the ASSA ABBLOY locks we have on campus, but > they have been great. For a purely network standpoint they are my choice. > Our access staff likes them as well. The only problem I have had is that > my older wireless plans didn't really plan for coverage of outside doors. > In one or two places that has been an issue we have had to overcome, but > that wasn't the lockset's fault. > > *TLDR:* I would be uneasy about 802.15.4 locks. Your access folks > should get competing quotes for locks that use 802.11g/n over your existing > infrastructure. If you do decide on an 802.11g/n based product, check for > adequate coverage. > > Greg Briggs > Network Manger > Pacific Lutheran University > > On Mon, Nov 6, 2017 at 12:24 PM, Matthew Ballard <[email protected]> > wrote: > >> Note that there two different types of locks that don’t require >> individual cabling, usually referred to wireless or wi-fi. >> >> >> >> These comments are related to Wi-Fi vs Wireless: >> >> Advantages: >> >> 1. Cheaper installation (due to being able to use the existing >> Wi-Fi network instead of installing access control specific infrastructure). >> >> 2. Lower probability of interference – but note that the locks >> transmit very little data (and the Wi-Fi ones generally only come on >> periodically, often only once a day). >> >> Disadvantages: >> >> 1. The locks are offline most of the time (they come online on a >> periodic basis). That means that updates are slower (as the locks only >> update periodically), so you can’t do lock-downs with them, lost card >> updates don’t take effect right away, etc. >> >> 2. It’s harder to diagnose certain types of lock problems (since >> it’s offline most of the time, you don’t see updates right away, and >> checking whether the lock is online or offline doesn’t matter since it’s >> offline most of the time). >> >> 3. Battery life is often worse (especially if you turn up the >> update frequency to deal with the other problems). >> >> >> >> Wi-Fi locks can be great for locks that don’t need updates very often and >> where you don’t need lockdown functionality. >> >> >> >> I would personally recommend going with wireless over wi-fi whenever >> possible, but there are times Wi-Fi is absolutely more practical. >> >> >> >> If you have specific questions on the above feel free to ask (I manage >> the electronic access control locks at Otis College as well as the Wi-Fi >> network). >> >> >> >> Matthew Ballard >> >> Director of Technology Infrasture >> >> Otis College of Art and Design >> >> [email protected] >> >> >> >> *CONFIDENTIALITY NOTICE*: This electronic message transmission contains >> information from Otis College of Art and Design, which may be confidential. >> If you are not the intedned recipient, be aware that any disclosure, >> copying, distribution or use of the content of this information is >> prohibited. If you have received this communication in error, please notify >> us immediately by e-mail an delete the original message any any attachment >> without reading or saving in any manner. >> >> >> >> >> >> >> >> *From:* The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto: >> [email protected]] *On Behalf Of *Chuck Enfield >> *Sent:* Monday, November 6, 2017 6:47 AM >> >> *To:* [email protected] >> *Subject:* Re: [WIRELESS-LAN] Wireless Door Locks? >> >> >> >> Hi Greg, >> >> >> >> Locks tend to have a very low network duty-cycle, so interference between >> the 802.15.4 network and 2.4GHz Wi-Fi will be minimal. That said, it may >> be worth considering Wi-Fi locks instead. That will ensure that they play >> well with other Wi-Fi devices and will spare the institution the cost of >> installing and managing a separate network for locks. >> >> >> >> On the down side of using Wi-Fi locks, the refresh cycle for Wi-Fi is >> shorter than for locks. If you have a bunch of locks reliant on outdated >> features it could hamper Wi-Fi performance down the road. The refresh >> cycle would have to be discussed with your facilities management, and/or >> security people. >> >> >> >> To the group, can you think of any other advantages/disadvantages of >> putting the locks on Wi-Fi? >> >> >> >> Chuck >> >> >> >> *From:* The EDUCAUSE Wireless Issues Constituent Group Listserv [ >> mailto:[email protected] >> <[email protected]>] *On Behalf Of *Lee H Badman >> *Sent:* Monday, November 6, 2017 9:09 AM >> *To:* [email protected] >> *Subject:* Re: [WIRELESS-LAN] Wireless Door Locks? >> >> >> >> It’s not what you’re asking, but we are using ASSA-ABLOY .11n locks. >> Fairly easy to support. >> >> Lee Badman (mobile) >> >> >> On Nov 6, 2017, at 8:32 AM, Gregory Fuller <[email protected]> >> wrote: >> >> Haven't seen any recent discussion here about wireless door locks. Our >> physical access team is looking to install some wireless door locks in an >> administrative building. I can see it growing past this building pretty >> rapidly and want to make sure they aren't putting in something that is >> going to cause us headaches. >> >> >> >> They are looking to install Aperio "HUB's" as they call them: >> >> >> >> https://vo-general.s3.amazonaws.com/53aee5c6-9690-4c74-a82a- >> 09f1d0f1ec68/d0vBYdO5QWWKURZqvp0w_AA%20Aperio%20Family% >> 20Brochure.pdf?AWSAccessKeyId=AKIAJ3YBR5GY2XF7YLGQ&Expires=1 >> 582662909&response-content-disposition=inline%3B%20filename% >> 3DAA%20Aperio%20Family%20Brochure.pdf&response-content-type=application% >> 2Fpdf&Signature=920fJFxmRxXi9vkJ7zrIVHZao9o%3D >> >> >> >> >> >> This appears to be using some variant of 802.15.4, which has the ability >> to run between our 802.11g/n 2.4Ghz channels, but will cause co-channel >> interference. I'm a bit concerned that there will be some impact to our >> 2.4Ghz clients (we have a ton of them out there still). >> >> >> >> Anyone else out there have these or something similar and can speak for >> how they work and if there are any issues in your environment? >> >> >> >> --greg >> >> >> >> >> >> Gregory A. Fuller - CCNP R&S, CCNP Security, CCNA Wireless >> >> Network Manager >> >> State University of New York at Oswego >> >> Phone: (315) 312-5750 >> >> http://www.oswego.edu/~gfuller >> >> _____________________________________________________ >> >> Campus Technology Services will never ask you to email us sensitive >> personal information such as a password. Please contact us if you are >> unsure if an email is genuine. 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