tag:blogger.com,1999:blog-3993498847203183398.post8374373026294369018..comments2024-03-28T09:19:27.451+00:00Comments on RevK<sup>®</sup>'s ramblings: Unicode SSIDsRevKhttp://www.blogger.com/profile/12369263214193333422noreply@blogger.comBlogger16125tag:blogger.com,1999:blog-3993498847203183398.post-50771393281688720722017-09-29T10:04:45.050+01:002017-09-29T10:04:45.050+01:00I couldn’t get any joy out of the earlier url to t...I couldn’t get any joy out of the earlier url to the beacon overhead calculator - server down or outage or some problem. I tried this instead http://revolutionwifi.blogspot.co.uk/p/ssid-overhead-calculator.htmlCecil Wardhttps://www.blogger.com/profile/16477035597238561739noreply@blogger.comtag:blogger.com,1999:blog-3993498847203183398.post-87746391357825746182017-09-29T09:53:40.350+01:002017-09-29T09:53:40.350+01:00It’s quite correct about the badness of overhead d...It’s quite correct about the badness of overhead due to multiple beacons. Don’t have more than two or perhaps three SSIDs on the same frequency band. I have several SSIDs per WAP, but I allocate some of them onto 2.4GHz only, some to 5GHz only, one to both. That really helps. And I used the above overhead calculator too. Another tip: You can also configure some WAPs to send beacons at higher speeds and screw the very low ancient speeds, and that helps enormously. I have done this with my ZyXel NWA-3560. This tweak would mean that some truly antique clients wouldn’t work, but who cares.Cecil Wardhttps://www.blogger.com/profile/16477035597238561739noreply@blogger.comtag:blogger.com,1999:blog-3993498847203183398.post-54747190225485307882017-09-27T08:50:19.067+01:002017-09-27T08:50:19.067+01:00Setting up FreeRADIUS to authenticate (and assign ...Setting up FreeRADIUS to authenticate (and assign VLANs) on my crappy Cisco APs was fairly easy. (Although I'm using EAP+TTLS+PAP, which isn't well supported by Windows.. luckily there are no Windows devices in the household and every other OS works with it fine).<br /><br />Unfortunately, (as far as I know) you can't mix 802.1x (WPA2 Enterprise) and plain old WPA2 on the same SSID, so I have to run a second WPA2 SSID for the random devices that don't do 802.1x (mainly ESP8266 based projects).Steve Hillhttps://www.blogger.com/profile/09798286430189689578noreply@blogger.comtag:blogger.com,1999:blog-3993498847203183398.post-71618739770424011152017-09-24T19:53:31.122+01:002017-09-24T19:53:31.122+01:00Yeh, been looking at that. Looks interesting.Yeh, been looking at that. Looks interesting.RevKhttps://www.blogger.com/profile/12369263214193333422noreply@blogger.comtag:blogger.com,1999:blog-3993498847203183398.post-78202719759514983802017-09-24T19:46:15.926+01:002017-09-24T19:46:15.926+01:00Re: RADIUS
The Cisco and Aruba systems I've e...Re: RADIUS<br /><br />The Cisco and Aruba systems I've encountered have a vendor-specific attribute to allow VLAN selection. However, you might have some joy with Tunnel-Type, Tunnel-Medium-Type, and Tunnel-Private-Group-ID.<br /><br />cf. https://community.ubnt.com/t5/UniFi-Wireless/RADIUS-Dynamic-VLAN-assignment-Users-gets-default-VLAN/m-p/1736458#M192931ajvhttps://www.blogger.com/profile/11061954864640918013noreply@blogger.comtag:blogger.com,1999:blog-3993498847203183398.post-14045167577822360172017-09-22T13:11:45.187+01:002017-09-22T13:11:45.187+01:00Beacons (i.e. what you'll get more of if you r...Beacons (i.e. what you'll get more of if you run additional SSIDs) are transmitted at the lowest supported data rate (usually 1Mb on 2GHz unless you tweak it), so they tie up quite a bit of airtime when you stack them up.sthenhttps://www.blogger.com/profile/05604893355769981443noreply@blogger.comtag:blogger.com,1999:blog-3993498847203183398.post-50936035073959107092017-09-21T16:31:39.223+01:002017-09-21T16:31:39.223+01:00Not that close and I think they are on different c...Not that close and I think they are on different channels where near.RevKhttps://www.blogger.com/profile/12369263214193333422noreply@blogger.comtag:blogger.com,1999:blog-3993498847203183398.post-76004178572580031722017-09-21T16:05:42.910+01:002017-09-21T16:05:42.910+01:00Not so fun for your neighbours with stuff on 2.4GH...Not so fun for your neighbours with stuff on 2.4GHz though...Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-3993498847203183398.post-9476544584212958792017-09-21T08:49:22.170+01:002017-09-21T08:49:22.170+01:00> the character in question had been percent/he...> the character in question had been percent/hex encoded. I found that I could type that in the ESSID box on the web based config.<br /><br />Sadly not with the UniFi web interface :(<br /><br />No Poo SSID for me!Anonymoushttps://www.blogger.com/profile/18427000118752159232noreply@blogger.comtag:blogger.com,1999:blog-3993498847203183398.post-39077876703777995592017-09-21T08:25:05.788+01:002017-09-21T08:25:05.788+01:00OK, googling finds this: There's updated versi...OK, googling finds this: There's updated version of standard ( standards.ieee.org/getieee802/download/802.11-2012.pdf ), which defines SSIDEncoding field. It can be UNSPECIFIED ( for arbitrary data ) or UTF8. –RevKhttps://www.blogger.com/profile/12369263214193333422noreply@blogger.comtag:blogger.com,1999:blog-3993498847203183398.post-64734599192947059862017-09-21T07:37:18.015+01:002017-09-21T07:37:18.015+01:00All my devices are on 5G, the extra "fun"...All my devices are on 5G, the extra "fun" SSIDs are all on 2.4G :-)<br />I am surprised it is as much overhead though, interesting. The APs are all on different channels.<br /><br />As for RADIUS, I would love to find the spec for the RADIUS attributes needed. Setting up RADIUS would be easy if I could work out what response the AP is expecting!RevKhttps://www.blogger.com/profile/12369263214193333422noreply@blogger.comtag:blogger.com,1999:blog-3993498847203183398.post-14592103300443232302017-09-21T07:23:40.252+01:002017-09-21T07:23:40.252+01:00Just as an aside, you are aware of the overheads i...Just as an aside, you are aware of the overheads incurred by running multiple SSIDs? <br /><br />For example with the 4 SSIDs I'm assuming are yours you'll be using 13% of your available airtime doing absolutely nothing. <br /><br />If you haven't setup multiple APs correctly (ie same/overlapping channels)then that increases linearly so with 3 APs you'd be utilising 39% of the available airtime - again without transferring any data.<br /><br />Multiple SSIDs might seem useful but the reality is they kill performance very rapidly. Much better to use radius vlans on decent kit.<br /><br />Andrew von Nagy has a SSID overhead calculator and app available :<br /><br />http://www.revolutionwifi.net/revolutionwifi/?month=february-2016&view=calendarAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-3993498847203183398.post-40847872885913950172017-09-21T06:17:09.117+01:002017-09-21T06:17:09.117+01:00That was two separate examples, some work in hex a...That was two separate examples, some work in hex and some do not oddly.<br /><br />However they do have a specific UTf-8 encoding option. Are you sure there is not some encoding but in the standard now?RevKhttps://www.blogger.com/profile/12369263214193333422noreply@blogger.comtag:blogger.com,1999:blog-3993498847203183398.post-75738927113534491032017-09-21T03:43:04.012+01:002017-09-21T03:43:04.012+01:00What do the standards say about data types within ...What do the standards say about data types within SSIDs? (I’m not immediately sure where to look in 802.11*?) If one just simply inserts sequences of bytes that happen to correspond to valid UTF-8 sequences, I wonder what assumptions recipient apps make?Cecil Wardhttps://www.blogger.com/profile/16477035597238561739noreply@blogger.comtag:blogger.com,1999:blog-3993498847203183398.post-5710850519052545682017-09-20T22:56:56.020+01:002017-09-20T22:56:56.020+01:00Er, what? The poop emoji is U+1F4A9, the hex bytes...Er, what? The poop emoji is U+1F4A9, the hex bytes E2 9A 94 are UTF-8 encoding of U+2694 a completely different character "Crossed Swords".<br /><br />In terms of the technical standards nobody cared what was done with the ESSID bytes, they are presentation only, if you shove something other than ASCII printable text in there all bets are off.tialaramexhttps://www.blogger.com/profile/04245919932453170519noreply@blogger.comtag:blogger.com,1999:blog-3993498847203183398.post-15275036179916943502017-09-20T19:37:05.321+01:002017-09-20T19:37:05.321+01:00I recall reading you could do the same with UniFi ...I recall reading you could do the same with UniFi AP's using a) manual controller config editing or b) flash OpenWRT on the access point itself. But I wouldn't do the latter for just this.JTLhttps://twitter.com/jtl999noreply@blogger.com