Closed Bug 1209800 Opened 10 years ago Closed 10 years ago

band steering for our wireless infrastructure

Categories

(Infrastructure & Operations Graveyard :: NetOps: Office Wireless, task)

Product:
Infrastructure & Operations Graveyard
Component:
NetOps: Office Wireless
Type:
task
Priority:
Not set
Severity:
normal

Tracking

(Not tracked)

Status:
RESOLVED FIXED

People

(Reporter: van, Assigned: van)

Details

the 2.4ghz spectrum in our offices is causing a lot of wireless network issues for our users. we do not have auto power and auto channel enabled (Juniper recommended) so we need to look into manual band steering to make our users prefer the 5ghz spectrum. 1) lower 2.4ghz radios as they propagate well 2) disable 2.4ghz around conferences as most devices in these conference rooms are capable of 5ghz. 3) adjust 5ghz spectrum 4) rerun NetSpot spectrum analyzer (until we can procure a better tool) and gather rf data from the controllers/APs long term, we'll still need to move users off the 2.4ghz spectrum. WiFi is not only collision avoidance, it's also half duplex. so every time there is a retransmit, it causes all other users on that radio to stop talking. here is an example cross channel interference we see from *one* of our APs on the 2.4ghz spectrum: AP: 5172 - wap702.sfo1 Detected BSSID Vendor Class Ch RSSI Age SSID ----------------- -------- ----- ---- ---- --- ----------------- 00:24:6c:2f:70:30 Unknown suspt 11 -84 64 WSF-GUEST 00:24:6c:2f:70:31 Unknown suspt 11 -82 0 WSF-EVENTS 00:24:6c:2f:70:32 Unknown suspt 11 -83 0 WSF 00:24:6c:2f:98:50 Unknown suspt 11 -77 43 WSF-GUEST 00:24:6c:2f:98:51 Unknown suspt 11 -77 43 WSF-EVENTS 00:24:6c:2f:98:52 Unknown suspt 11 -77 43 WSF 00:71:c2:5c:66:1a Unknown suspt 11 -88 43 xfinitywifi 14:dd:a9:14:4b:18 Unknown suspt 11 -89 296 HOME-3CFC-2.4 18:64:72:5f:54:40 Unknown suspt 11 -76 64 WSF 18:64:72:5f:54:41 Unknown suspt 11 -76 21 WSF-GUEST 18:64:72:5f:54:42 Unknown suspt 11 -76 64 WSF-EVENTS 18:64:72:5f:56:40 Unknown suspt 11 -82 64 WSF 18:64:72:5f:56:41 Unknown suspt 11 -81 64 WSF-GUEST 18:64:72:5f:56:42 Unknown suspt 11 -82 64 WSF-EVENTS 40:b7:f3:2b:8d:50 Unknown suspt 11 -85 64 ATT544 44:32:c8:e5:9b:f8 Unknown suspt 11 -86 43 sumtingwong 46:32:c8:e5:9b:f9 Unknown suspt 11 -83 64 46:32:c8:e5:9b:fa Unknown suspt 11 -86 21 xfinitywifi 48:f8:b3:2e:5c:a6 Unknown suspt 11 -79 21 WSF-614-AVDG 58:23:8c:e4:8c:4b Unknown suspt 11 -85 21 SpecialAgentCooper 5a:23:8c:b8:40:d0 Unknown suspt 11 -85 819 5a:23:8c:e4:8c:4c Unknown suspt 11 -82 64 5a:23:8c:e4:8c:4d Unknown suspt 11 -84 0 xfinitywifi 64:d9:89:6a:76:d2 Unknown suspt 11 -88 0 HPWAN001 6c:70:9f:e9:0f:0a Unknown suspt 11 -89 0 Scraggle Net 90:72:40:16:46:ce Unknown suspt 11 -83 21 Galorndon Core 90:72:40:25:b1:78 Unknown suspt 11 -86 0 sunnydays 94:62:69:d9:ab:f0 Unknown suspt 11 -86 43 ATT864 ac:4b:c8:0e:41:80 Juniper membr 11 -77 64 Mozilla ac:4b:c8:0e:41:82 Juniper membr 11 -77 64 Mozilla5 ac:4b:c8:0e:41:84 Juniper membr 11 -77 64 openwireless.org ac:4b:c8:0e:41:86 Juniper membr 11 -76 64 Mozilla Guest cc:03:fa:79:6f:8c Unknown suspt 11 -86 0 HOME-6F8C ce:03:fa:79:6f:8d Unknown suspt 11 -86 21 ce:03:fa:79:6f:8e Unknown suspt 11 -86 0 xfinitywifi this issue is also prevalent in par1. AP: 4335 - wap125.par1 Detected BSSID Vendor Class Ch RSSI Age SSID ----------------- -------- ----- ---- ---- --- ----------------- 00:1d:6a:6b:7c:50 Unknown suspt 1 -78 13 Livebox-f250 00:1f:9f:e3:62:1d Unknown suspt 1 -86 75 Bbox-24AEE4 00:27:0d:56:23:d0 Unknown rogue 1 -73 60 MDP-INTERNET 00:27:0d:56:23:d1 Unknown suspt 1 -72 44 MDP-GP-TAB 00:27:0d:56:23:d2 Unknown suspt 1 -71 44 00:78:9e:61:62:20 Unknown rogue 1 -84 75 Mozilla-Apartment 00:78:9e:61:62:21 Unknown rogue 1 -83 91 Bouygues Telecom W~ 06:1d:6a:6b:7c:50 Unknown rogue 1 -78 28 orange 08:5b:0e:87:1a:f0 Unknown rogue 1 -84 44 Wifi-KORUS-invite 08:5b:0e:87:21:80 Unknown rogue 1 -85 75 Wifi-KORUS-invite 1a:5b:0e:87:1a:f0 Unknown rogue 1 -84 44 Wifi-KORUS-prod 1a:5b:0e:87:21:80 Unknown rogue 1 -85 60 Wifi-KORUS-prod 1c:e8:5d:b8:a7:e0 Unknown suspt 1 -87 60 GreenFlex 1c:e8:5d:b8:a7:e1 Unknown suspt 1 -86 60 GreenFlex Visiteurs 40:b4:f0:1e:df:c0 Unknown membr 1 -74 44 Mozilla 40:b4:f0:1e:df:c4 Unknown membr 1 -74 75 Mozilla5 40:b4:f0:1e:df:c6 Unknown membr 1 -73 44 openwireless.org 40:b4:f0:1e:df:c8 Unknown membr 1 -74 44 Mozilla Guest 64:66:b3:c1:dc:72 Unknown suspt 1 -80 75 AreWeFastYet 64:87:88:34:25:00 Juniper membr 1 -69 75 Mozilla 64:87:88:34:25:04 Juniper membr 1 -68 44 64:87:88:34:25:06 Juniper membr 1 -69 91 openwireless.org 64:87:88:34:25:08 Juniper membr 1 -69 28 Mozilla Guest 64:87:88:34:57:40 Juniper membr 1 -83 13 Mozilla 64:87:88:34:57:44 Juniper membr 1 -83 60 64:87:88:34:57:46 Juniper membr 1 -83 60 openwireless.org 64:87:88:34:57:48 Juniper membr 1 -83 60 Mozilla Guest 64:87:88:35:4e:00 Juniper membr 1 -77 75 Mozilla 64:87:88:35:4e:04 Juniper membr 1 -77 13 64:87:88:35:4e:06 Juniper membr 1 -77 75 openwireless.org 64:87:88:35:4e:08 Juniper membr 1 -77 91 Mozilla Guest 72:1f:9f:e3:62:1e Unknown suspt 1 -87 60 Bouygues Telecom W~ b0:00:b4:7d:e6:20 Unknown rogue 1 -85 13 MDP-INTERNET b0:00:b4:7d:e6:21 Unknown suspt 1 -86 28 b0:00:b4:7d:e6:22 Unknown suspt 1 -86 91 d2:d3:ee:e1:9f:28 Unknown suspt 1 -83 75 FREEBOX_FRANCK_JU
Assignee: network-operations → vle
>WiFi is not only collision avoidance, it's also half duplex. so every time there is a retransmit, it causes all other users on that radio to stop talking. i phrased that wrong and let me hopefully correct it. WiFi uses CTS/RTS frames with a NAV timer that allows it to have to "undisrupted" talk with the AP (collision avoidance). When we have retransmits, these frames can get jumbled and/or lost due to the cross channel or adjacent channel interference. This causes lost air time as the client has to resend all the packets to the AP and those need to be ACK'd. real life example: daughter - daddy daddy daddy daddy daddy daddy (request to send) father - what? (clear to send) father - you have 1 minute to get your point of across (NAV timer) daughter - blah blah blah (packets) father - *wasn't paying attention 15 seconds through due to phone ringing* (cross/adjacent channel interference) daughter - "daddy, now i have to start all over" (retransmit)
worked with EUS to test this option and it has shown to allow the clients to prioritize the 5ghz spectrum over the 2.4. also changed this option on alan chang's laptop and he has consistently connected to this spectrum whereas before he was only connecting to the 2.4. achang@mozilla.com 11997* dot1x 10.252.26.38,V6 corp L 5206/2
Status: NEW → RESOLVED
Closed: 10 years ago
Resolution: --- → FIXED
Product: Infrastructure & Operations → Infrastructure & Operations Graveyard
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