Date: Fri, 10 Mar 2006 03:29:49 -0300 From: JoaoBR <joao@matik.com.br> To: freebsd-stable@freebsd.org Cc: Damian Gerow <dgerow@afflictions.org> Subject: Re: ath(4) and 802.11g speed Message-ID: <200603100329.49920.joao@matik.com.br> In-Reply-To: <20060310052740.GD31158@afflictions.org> References: <20060308231529.GA2049@afflictions.org> <200603101540.21112.doconnor@gsoft.com.au> <20060310052740.GD31158@afflictions.org>
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On Friday 10 March 2006 02:27, Damian Gerow wrote: > Thus spake Daniel O'Connor (doconnor@gsoft.com.au) [10/03/06 00:19]: > : > Okay, this has me a bit curious, so I dug into it a bit more: > : > > : > SSID BSSID CHAN RATE S:N INT CAPS > : > linksys 00:06:25:7b:25:3d 6 11M 35:0 100 E > : > MYSSID 00:12:17:85:9a:3b 11 54M 39:0 100 E > : > wahoo62 00:13:46:47:0f:0e 11 54M 4:0 100 EPS > : > > : > I'd have thought that a S:N of 39:0 wouldn't be all that weak, no?=20 > : > Looking at a post by Sam this past August, he calls 30:0 "very strong= ", > : > though that was for an 802.11b link. I'd think that the higher the > : > number, the stronger the signal. Is the above too weak to handle a > : > full 54Mbps link? > : generally it is not the signalstrength which let you connect at higher spee= ds,=20 it is the noise level. So you can have a low signal without noise and you m= ay=20 connect at high speed and on the other hand you may have a strong signal an= d=20 high noise and the speed is 1Mb or do not connect/associate at all > ----- > ath0: flags=3D28943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST,PPROMI= SC> > mtu 1500 inet6 fe80::20f:b5ff:fe20:71ed%ath0 prefixlen 64 scopeid 0x1 > inet 192.168.132.146 netmask 0xffffff00 broadcast 192.168.132.255 > ether 00:0f:b5:20:71:ed > media: IEEE 802.11 Wireless Ethernet autoselect <monitor> > status: associated tha card default in autoselect is probably 11b so it do not connect at 11g= =20 until you configure it to ifconfig mode 11g media OFDM/54mbps should do the job,, tha card still connect at lower speed depending on what= it=20 can with the selected AP in order to not jumping around you can try setting bssid _MAC_desired_AP_ so long as your card is in monitor mode you may not connect nor get traffic= at=20 all Jo=E3o A mensagem foi scaneada pelo sistema de e-mail e pode ser considerada segura. Service fornecido pelo Datacenter Matik https://datacenter.matik.com.br
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