strange problem with wireless N on dlink dir-615 / toshiba laptop
in [Wireless Internet]
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From: Peter Pan on 23 Jan 2010 00:41 "ps56k" <pschuman_no_spam_me(a)interserv.com> wrote in message news:hjdhu7$jkv$1(a)news.eternal-september.org... > > "Bob" <bob(a)invalid.invalid> wrote in message > news:ldydne61w6JnCcTWnZ2dnUVZ8tydnZ2d(a)bt.com... >> On 21/01/2010 23:56, Tony Hwang wrote: >>> bitz wrote: >>>> Should encription like wep / wpa etc be any different if your laptop >>>> is connected in Wireless N mode v's G or B etc. >>>> Here's whats bugging me at the moment. I have a new toshiba laptop >>>> with wireless N capabilities and a dlink DIR-615 router. The DIR-615 >>>> has a setting which can force "wireless N only" mode which i turned on >>>> just to test out the wireless N speeds etc. With encription turned off >>>> it connects ok (speed was 150mbs ..5m across the room). The minute i >>>> turn wep or wpa or wpa2 on my laptop wont connect (yeh im putting in >>>> the same passcode into the laptop etc!). Yet if if change the router >>>> to accept all speeds (ie wireless N G B etc), it connects ok wiht >>>> WEP/WPA etc but only connects at 54mbit G settings ..not N. Basically >>>> if i use any encription ie wpa/wep etc it wont connect with wireless >>>> N settings? >>>> >>>> >>>> Any ideas? >>> Hi, >>> I had similar issue with Belkin N+router. It is a design fault of WiFi >>> radio chip in the router. Maybe your D-link router uses same chip. >>> >> It was a function of the 802.11n draft. >> >> "The IEEE* 802.11n Draft prohibits using High Throughput with WEP or TKIP >> as the unicast cipher. If you use these encryption methods (e.g. WEP, >> WPA-TKIP), your data rate will drop to 54 Mbps. Newer Intel� wireless >> adapter client drivers connect using a legacy IEEE 802.11g connection >> rather than failing to connect altogether, which complies with the IEEE >> 802.11n draft." >> <http://www.intel.com/support/wireless/wlan/4965agn/sb/CS-025643.htm> > > wow - thanks for posting - > will have to remember that for future.... > does the actual "N" spec now allow for these encryptions ? > > What actual N spec? it's still in draft, final specs aren't/defined approved yet....
From: Bob on 24 Jan 2010 10:43
On 23/01/2010 01:04, ps56k wrote: > "Bob"<bob(a)invalid.invalid> wrote in message > news:ldydne61w6JnCcTWnZ2dnUVZ8tydnZ2d(a)bt.com... >> On 21/01/2010 23:56, Tony Hwang wrote: >>> bitz wrote: >>>> Should encription like wep / wpa etc be any different if your laptop >>>> is connected in Wireless N mode v's G or B etc. >>>> Here's whats bugging me at the moment. I have a new toshiba laptop >>>> with wireless N capabilities and a dlink DIR-615 router. The DIR-615 >>>> has a setting which can force "wireless N only" mode which i turned on >>>> just to test out the wireless N speeds etc. With encription turned off >>>> it connects ok (speed was 150mbs ..5m across the room). The minute i >>>> turn wep or wpa or wpa2 on my laptop wont connect (yeh im putting in >>>> the same passcode into the laptop etc!). Yet if if change the router >>>> to accept all speeds (ie wireless N G B etc), it connects ok wiht >>>> WEP/WPA etc but only connects at 54mbit G settings ..not N. Basically >>>> if i use any encription ie wpa/wep etc it wont connect with wireless >>>> N settings? >>>> >>>> >>>> Any ideas? >>> Hi, >>> I had similar issue with Belkin N+router. It is a design fault of WiFi >>> radio chip in the router. Maybe your D-link router uses same chip. >>> >> It was a function of the 802.11n draft. >> >> "The IEEE* 802.11n Draft prohibits using High Throughput with WEP or TKIP >> as the unicast cipher. If you use these encryption methods (e.g. WEP, >> WPA-TKIP), your data rate will drop to 54 Mbps. Newer Intel� wireless >> adapter client drivers connect using a legacy IEEE 802.11g connection >> rather than failing to connect altogether, which complies with the IEEE >> 802.11n draft." >> <http://www.intel.com/support/wireless/wlan/4965agn/sb/CS-025643.htm> > > wow - thanks for posting - > will have to remember that for future.... > does the actual "N" spec now allow for these encryptions ? > > I'm far too mean to purchase a copy of the standard but as far as the HT option is concerned the answer will be no. I did a Google and came across this " ECN #155: Add in tests 4.2.39 and 5.2.46 to prevent TKIP from being used with HT rates" <http://www.polarisnetworks.net/datasheet/polaris11n-release-notes.pdf> also "Disallow TKIP with HT Rate - Mandatory" <http://www.adt.com.tw/english/news_files/2009100901.pdf> |