Yeah, it’s just the downlink that becomes a problem. All is good on what we have below at the moment. I should have just waited to take a before reboot and after screenshot.
From: Af [mailto:[email protected]] On Behalf Of Eric Muehleisen Sent: Wednesday, June 17, 2015 9:23 AM To: [email protected] Subject: Re: [AFMUG] Cambium 320 Poor CINR and mcs after awhile Uplink looks good. Does this only affect downlink? First thought would be self-interference but that usually doesn't show up in the radio stats but rather packet loss in the service flow stats. During a maintenance window, shut down all your AP's and run a spectrum analysis one-by-one. I would suspect the noise floor to increase during peak times. On Wed, Jun 17, 2015 at 7:57 AM, Greg Osborn <[email protected] <mailto:[email protected]> > wrote: We have 3 sites with Cambium 320 gear. 2 with Omni’s that don’t behave oddly. The other has 4 AP’s and requires a reboot of the AP’s after a while because the CINR values and modulations will tank. We are not using a ABAB config. It doesn’t seem to be tied to sync or interference, as far as I can tell. Yes there are some crappy installs here. We acquired them through a failed startup. Below is what it will look like when good. When it is bad, cut the CINR values to 12ish or less with a QPSK x/x. Signal will still be good. Any ideas on the reasoning? Parameters marked with (*) will display accurate values only when that link is passing traffic. CPE MAC Address Uplink Downlink RSSI 0* (in dBm) RSSI 2* (in dBm) CINR* (in dB) MCS* RSSI (in dBm) Zone CINR (in dB) MIMO Type* MCS* 64:ed:57:31:7f:e0 -83 -66 28 QAM64 5/6 -69 24 MIMO A QAM64 2/3 64:ed:57:31:84:46 -69 -64 34 QAM64 5/6 -74 24 MIMO A QAM64 2/3 64:ed:57:31:84:58 -95 -74 23 QAM64 2/3 -88 11 MIMO A QPSK 1/2 64:ed:57:31:84:f6 -79 -61 34 QAM64 5/6 -71 26 MIMO A QAM64 3/4 64:ed:57:31:86:52 -67 -58 34 QAM64 5/6 -66 28 MIMO B QAM64 5/6 64:ed:57:31:87:30 -67 -58 34 QAM64 5/6 -68 28 MIMO A QAM64 5/6 64:ed:57:31:87:ae -93 -68 29 QAM64 5/6 -80 18 MIMO A QAM16 1/2 64:ed:57:31:88:4c -62 -87 33 QAM64 5/6 -45 28 MIMO B QAM64 5/6 64:ed:57:31:8a:90 -75 -58 34 QAM64 5/6 -68 28 MIMO A QAM64 5/6 64:ed:57:31:8c:f2 -77 -64 29 QAM64 5/6 -88 16 MIMO A QAM16 1/2 64:ed:57:31:8d:70 -87 -64 33 QAM64 5/6 -71 27 MIMO A QAM64 5/6 64:ed:57:31:8e:da -78 -69 29 QAM64 5/6 -81 17 MIMO A QAM16 1/2 64:ed:57:40:7c:16 -61 -79 34 QAM64 5/6 -61 28 MIMO B QAM64 5/6 -- Thank you, Greg Osborn Tech Support and Field Service Manager OnlyInternet.Net 1.800.363.0989 <tel:1.800.363.0989> <http://www.facebook.com/onlyinternet> <http://www.twitter.com/oibw> <http://www.onlyinternet.net/>
