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AirOS » Historique » Version 54

Laurent GUERBY, 28/04/2014 11:24

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{{>toc}}
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h1. AirOS
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http://en.wikipedia.org/wiki/List_of_WLAN_channels
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http://wireless.kernel.org/en/developers/Regulatory
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http://wireless.kernel.org/en/developers/Regulatory/Database
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<pre>
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Band [MHz]	Max BW [MHz]	Flags	Max antenna gain [dBi]	Max EIRP [dBm (mW)]
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2402.000 - 2482.000	40.000		N/A	20.00 (100.00) => 80 MHz
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5170.000 - 5250.000	40.000		N/A	20.00 (100.00) => 80 MHz
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5250.000 - 5330.000	40.000	DFS	N/A	20.00 (100.00) => 80 MHz
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5490.000 - 5710.000	40.000	DFS	N/A	27.00 (501.19) => 220 MHz 
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(total 5 GHz 380 MHz, 5600-5650 = radar = 50 MHz)
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</pre>
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http://www.ubnt.com/wiki/RF_Compliance
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For example, if you select  5805 MHz (40 MHz channel) and Below, the radio will use  (5775 to 5795 MHz) + (5795 to 5815 MHz), 
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but if you select   5805 MHz (40 MHz channel) and Above, the radio will use  (5795 to 5815 MHz) + (5815 to 5835 MHz).
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ath9k http://wenku.baidu.com/view/ac0523f57c1cfad6195fa7f4.html
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Ubnt founder: http://www.forbes.com/forbes/2012/0116/entrepreneurs-robert-pera-computer-hardware-apple.html
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h2. Commandes utiles
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gestion config via ssh: http://gregsowell.com/?p=3457
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upgrade firmware via ssh: http://stfunoo.be/?p=1120
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h2. v5.3.5
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http://wiki.ubnt.com/AirOS_5.3
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Channel width 5/10/20/40
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TX power min max dBm
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Loco    4  23
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NS      8  27
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NB      4  23
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Rocket  -4 27
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LocoM2 5/10/20/40 dBm 5-23
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h2. Comparaison
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5.3.5 vs 5.5 
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Linux version 2.6.15-5.2 (buildd@builder) (gcc version 4.1.2)  Mon Dec 19 20:46:46 EET 2011  (janvier 2006)
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Linux version 2.6.32.54 (buildd@builder) (gcc version 4.1.2)  Fri Apr 6 14:56:27 EEST 2012 (decembre 2009)
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6842240 May 19 17:07 XM-v5.3.5.build11245.bin
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6472831 May 19 17:07 XM-v5.5.build12536.bin
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h2. v5.5
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http://www.ubnt.com/download#doc
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http://www.ubnt.com/downloads/guides/airOS/airOS_UG_V55_3-20-12.pdf
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Country Compliance Mode Frequency 4920 Mhz a 6100 MHz
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Channel width 3/5/8/10/20/25/30/40
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TX power min max dBm
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Loco    4  23
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NS     -4  27
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NB     -8  23
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Rocket -4  27
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LocoM2 3/5/8/10/20/25/30/40 dBm 5-23 Freq 2312 a 2732 MHz (France 5/8/10/20/30/40 et 2412-2472)
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IPv6 supported in command line ping6 fe80::xxx%br0 works
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h2. Tagger les 2 ports ethernet sur firmware 5.5:
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NB:La NS doit déjà fonctionner sans VLAN en mode bridge.
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Onglet Network:
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* Configuration Mode: Advanced
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Dans "VLAN Network":
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* Ajouter le LAN0 avec VLANID 12
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* Ajouter le LAN1 avec VLANID 12
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Dans "Bridge Network" pour le "Bridge0":
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* Supprimer LAN0
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* Supprimer LAN1
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* Ajouter LAN0.12
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* Ajouter LAN1.12
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Et appliquer la configuration.
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Voila il reste plus qu'à configurer la machine/router pour utiliser ce vlan.
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Exemple avec linux:
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<pre>
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# ip link add link eth0 name eth0.12 type vlan id 12
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# ip link set eth0.12 up
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# ping6 -c1 fe80::31%eth0.12
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PING fe80::31%eth0.12(fe80::31) 56 data bytes
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64 bytes from fe80::31: icmp_seq=1 ttl=64 time=23.5 ms
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--- fe80::31%eth0.12 ping statistics ---
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1 packets transmitted, 1 received, 0% packet loss, time 0ms
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rtt min/avg/max/mdev = 23.519/23.519/23.519/0.000 ms
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</pre>
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h2. Forums
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* http://community.ubnt.com/t5/airMAX-General-Discussion/Ubiquiti-products-700MHz-RF-leakage/m-p/797462#M40669
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** Re: Ubiquiti products 700MHz RF leakage Ubiquiti devices operate within FCC limits. It's just the second harmonic from the CPU that could cause interference for Verzion equipment. Either firmware is FCC approved
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h2. AirView test
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References:
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* http://forum.ubnt.com/showthread.php?t=52560
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* ETSI EN 301 893 v1.7.0 (2012-01)
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* http://www.etsi.org/deliver/etsi_en/301800_301899/301893/01.07.00_40/en_301893v010700o.pdf
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** See diagram page 17 of the ETSI PDF
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Lab on table same room compliance mode 5.5
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- one NSM5 AP WDS
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- one LocoM5 STA WDS 1 meter from the NSM5
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- one NBM5 head (without dish) right in between Loco and NS running AirView
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Steps for each graph
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# associate NS and Loco with new frequency and width
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# clear airview
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# launch 300 second iperf client between netbook behind NSM5 to iperf server on locoM5
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# after iperf is done save airview screenshot
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# go back to step 1
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h3. First batch testing narrow channels 5240 with 5200-5300 airview:
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* 3 MHz
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 !5240-3.png!
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* 5 MHz
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 !5240-5.png!
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* 8 MHz
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 !5240-8.png!
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* 10 MHz
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 !5240-10.png!
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* 20 MHz
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 !5240-20.png!
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h3. Second batch testing large channels 5300 with 5200-5400 airview:
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* no emission to verify noise
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 !5300-0b.png!
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* 10 MHz
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 !5300-10b.png!
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* 20 MHz
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 !5300-20b.png!
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* 30 MHz
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 !5300-30b.png!
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* 40 MHz
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 !5300-40b.png!