With a bad SNR, you might want to check the APs nearby the one they are trying to connect to and see if they are on the same channel, or have adjacent or overlapping channels. If you are running 80MHz or 40 MHz channels, it is very easy to have cross over. I would also see if there are non-college equipment running on that channel and causing interference.
Seth Bean Administrator of Networks and Telecommunications APA Union Chapter President Massachusetts College of Liberal Arts 413.662.5022 413.663.1276 375 Church Street North Adams, MA 01247 “National Top Ten Public Liberal Arts College” 2020-2021 US News & World Report ________________________________ From: The EDUCAUSE Wireless Issues Community Group Listserv <WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU> on behalf of Tim Tyler <ty...@beloit.edu> Sent: Friday, June 4, 2021 10:43 AM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU <WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU> Subject: Re: [WIRELESS-LAN] Apple product antenna strength vs other? CAUTION: This email originated from outside of MCLA. Do not click links or open attachments unless you recognize the sender and know the content is safe. Chuck, We checked bar strength. Macs were in the 2nd out of 3 bars. PC’s were getting 4 out of 5. I didn’t check the phones. We did bandwidth testing and Macs were below 10Mb while PC’s were averaging around 150Mb. I did check Airwave for possible issues. It suggested a poor SNR value for at least one of the Macs. I didn’t know what to make of that since the PC’s were not having that issue. Health was not good. Also, the Macs would drop connections and sometimes have random difficulty in connecting. No issues with the PC’s or droids. It was basic testing at this point, but there was no doubt that Macs struggled performance wise while PC’s didn’t. I do need to go back and make sure they are all using the same AP. I did check on one Mac, but I didn’t verify it for all of them. Tim From: The EDUCAUSE Wireless Issues Community Group Listserv [mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>] On Behalf Of Enfield, Chuck Sent: Friday, June 4, 2021 9:28 AM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU> Subject: Re: [WIRELESS-LAN] Apple product antenna strength vs other? Tim, If you don’t mind my asking, how are you assessing the performance? Chuck Enfield Manager, Wireless & Cellular Penn State IT 814-863-8715 From: The EDUCAUSE Wireless Issues Community Group Listserv <WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>> On Behalf Of Tim Tyler Sent: Friday, June 4, 2021 10:18 AM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU> Subject: [WIRELESS-LAN] Apple product antenna strength vs other? Wifi experts, We are running Aruba MM with two controllers on 8.7.3. Our AP’s are mostly AP-225’s. I have had complaints from one of our tech rooms that they were getting a poor signal. I finally got around to testing that room out. The location of the AP to this room is in an adjacent room. When I test with Windows PC’s and Droid phones, the signal and performance is just fine. When we tested with Macs and iphones, the signal strength was amazingly weak for all of them. We tested with two Macs and two iphones as well as multiple PC’s and Android phones. Only the Apple devices had weak signals. Have any of you experienced a weaker antenna performance with your Apple devices on your campuses? If I put an AP in the room, the Apple devices are fine. But I am surprised I would have to do this. I would not have expected Apple devices to have weaker antennas. I did check in Airwave to make sure at least one of the Macs was still connecting to the same AP. Any thoughts from anyone? Tim Tyler Network Engineer Beloit College ********** Replies to EDUCAUSE Community Group emails are sent to the entire community list. If you want to reply only to the person who sent the message, copy and paste their email address and forward the email reply. Additional participation and subscription information can be found at https://www.educause.edu/community<https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.educause.edu%2Fcommunity&data=04%7C01%7Ccae104%40PSU.EDU%7Cfc8197cca6b54252bdf508d927639f37%7C7cf48d453ddb4389a9c1c115526eb52e%7C0%7C0%7C637584131091387070%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=ctebr2J2VXWUkwsOBhqkc8UcQiP6zwZcgH9IP%2BMvvPw%3D&reserved=0> ********** Replies to EDUCAUSE Community Group emails are sent to the entire community list. If you want to reply only to the person who sent the message, copy and paste their email address and forward the email reply. Additional participation and subscription information can be found at https://www.educause.edu/community ********** Replies to EDUCAUSE Community Group emails are sent to the entire community list. If you want to reply only to the person who sent the message, copy and paste their email address and forward the email reply. Additional participation and subscription information can be found at https://www.educause.edu/community ********** Replies to EDUCAUSE Community Group emails are sent to the entire community list. If you want to reply only to the person who sent the message, copy and paste their email address and forward the email reply. Additional participation and subscription information can be found at https://www.educause.edu/community
