Wireless access

This page describe wireless Ethernet access in CSIM facility.

CSIM is using Lynksys E3000 dual band access points with DD-WRT firmware. It's providing up to 600 Mbps connection through 802.11n.

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CSIM has a complete coverage of the building with wireless Ethernet based on five access points. Every room is now accessible through WiFi.

Virtual Wireless

Installing DD-WRT firmware allows us to deploy virtual wireless where each access point can advertize multiple independent networks. Each access point is configured to advertize two wireless networks: AIT-CSIM and AIT-NON-CSIM.

AIT-CSIM
shares the same network as the cable network in CSIM, it offers the same features as CSIM cabled network, with access to CSIM servers and authentication through a CSIM account. Android users can use the application that gives automatic authentication. You can also create a x509 identity for a one click connection.
AIT-NON-CSIM
shares the same network as the rest of AIT, authentication is made using AIT account. An AIT colleague visiting CSIM facilities can use the network AIT-NON-CSIM to access Internet, with no need for a specific account in CSIM.
The rules and limitations for accessing Internet are the ones that apply for AIT in general.
eduroam
(education roaming) is a secure, world-wide roaming access service developed for the international research and education community. It allows you to obtain Internet connectivity across CSIM and when visiting other participating institutions by simply opening your laptop. You can follow the instructions on this page to set-up eduroam on your device.
When visiting another university, no need to request for a user name and password to acces Internet; you connect with your CSIM credentials and you are through.
In CSIM, The number of connections to eduroam is very limited, and designed for visitors only; the rules and limitations for accessing Internet are the ones that apply for AIT in general.
 

Hardware deployement

The drawing below show the implementation of the access points.


CSIM facility floor plan

DEC building                   Currently inactive

Brand: Linksys
Model: WRT350N
Firmware: DD-WRT v24-sp2 (12/14/11) mini - build 18007
IP: 192.41.170.31
Name: wifi5.cs.ait.ac.th
MAC: 00:1c:10:8b:15:2b, 00:1c:10:8b:15:2c, 00:1c:10:8b:15:2d, 02:1c:10:8b:15:2e and 02:1c:10:8b:15:2f
Band 2.4 GHz, channel: 6

   
     

Second floor, West          

Brand: D-Link
Model: DIR-880L
Firmware:DD-WRT v3.0-r34311 std (12/29/17)
IP: 192.41.170.79
Name: wifi3.cs.ait.ac.th
MAC: 1c:5f:2b:10:bf:a8, 1c:5f:2b:10:bf:aa, 1e:5f:2b:10:bf:a9, 1e:5f:2b:10:bf:ab and 1e:5f:2b:10:bf:ad
Band 2.4 GHz, channel: 1
Band 5GHz, channel: 54 + 56
Usage statistics

Second floor, East          

Brand: Linksys
Model: E3000
Firmware: DD-WRT v24-sp2 (12/12/11) vpn - build 18000
IP: 192.41.170.80
Name: wifi4.cs.ait.ac.th
MAC : 98:fc:11:7c:40:85, 98:fc:11:7c:40:87, 98:fc:11:7c:40:88, 9a:fc:11:7c:40:84, 9a:fc:11:7c:40:85, 9a:fc:11:7c:40:89 and 9a:fc:11:7c:40:8a
Band 2.4GHZ. channel: 11
Band 5GHz, channel: 62 + 64
Usage statistics

     

First floor, West          

Brand: Linksys
Model: E3000
Firmware:DD-WRT v24-sp2 (12/12/11) vpn - build 18000
IP: 192.41.170.77
Name: wifi1.cs.ait.ac.th
MAC: 98:fc:11:7c:40:88, 9a:fc:11:7c:40:89, 9a:fc:11:7c:40:8a, c0:c1:c0:cd:79:52, c0:c1:c0:cd:79:54, c2:c1:c0:cd:79:55 and c2:c1:c0:cd:79:56
Band 2.4 GHz, channel: 11
Band 5GHz, channel: 38 + 40
Usage statistics

 

First floor, East          

Brand: D-Link
Model: DIR-880L
Firmware:DD-WRT v3.0-r34311 std (12/29/17)
IP: 192.41.170.78
Name: wifi2.cs.ait.ac.th
MAC: 1c:5f:2b:10:c3:fc, 1c:5f:2b:10:c3:fd, 1c:5f:2b:10:c3:fe, 1e:5f:2b:10:c3:f1 and 1e:5f:2b:10:c3:ff
Band 2.4 GHz, channel: 1
Band 5GHz, channel: 46 + 48
Usage statistics

Signal monitoring

The following data show the signal received in each room of CSIM building.

  Date: 17 January 2018 Lobby first floor AP Location Chl Min Max Avg Frequency Width wifi2, first floor, East, 1, -51, -50, -50.7, 2412 MHz, 20 MHz wifi4, second floor, East, 11, -66, -66, -66.0, 2462 MHz, 20 MHz wifi1, first floor, West, 11, -75, -68, -71.3, 2462 MHz, 20 MHz wifi3, second floor, West, 1, -82, -81, -81.7, 2412 MHz, 20 MHz Room #101 AP Location Chl Min Max Avg Frequency Width wifi1, first floor, West, 11, -68, -63, -64.7, 2462 MHz, 20 MHz wifi3, second floor, West, 1, -66, -64, -65.3, 2412 MHz, 20 MHz wifi2, first floor, East, 1, -67, -65, -66.0, 2412 MHz, 20 MHz wifi4, second floor, East, 11, -84, -83, -83.5, 2462 MHz, 20 MHz Room #102 AP Location Chl Min Max Avg Frequency Width wifi3, second floor, West, 1, -56, -56, -56.0, 2412 MHz, 20 MHz wifi1, first floor, West, 11, -64, -62, -62.7, 2462 MHz, 20 MHz wifi2, first floor, East, 1, -77, -76, -76.3, 2412 MHz, 20 MHz wifi4, second floor, East, 11, -89, -89, -89.0, 2462 MHz, 20 MHz Room #103 AP Location Chl Min Max Avg Frequency Width wifi1, first floor, West, 11, -47, -44, -46.0, 2462 MHz, 20 MHz wifi3, second floor, West, 1, -52, -50, -50.7, 2412 MHz, 20 MHz wifi2, first floor, East, 1, -84, -79, -82.0, 2412 MHz, 20 MHz Room #104 AP Location Chl Min Max Avg Frequency Width wifi3, second floor, West, 1, -47, -47, -47.0, 2412 MHz, 20 MHz wifi1, first floor, West, 11, -52, -47, -49.3, 2462 MHz, 20 MHz wifi2, first floor, East, 1, -83, -82, -82.3, 2412 MHz, 20 MHz Room #105 AP Location Chl Min Max Avg Frequency Width wifi1, first floor, West, 11, -58, -55, -56.3, 2462 MHz, 20 MHz wifi3, second floor, West, 1, -58, -58, -58.0, 2412 MHz, 20 MHz wifi2, first floor, East, 1, -89, -86, -88.0, 2412 MHz, 20 MHz Room #106 AP Location Chl Min Max Avg Frequency Width wifi1, first floor, West, 11, -54, -52, -53.0, 2462 MHz, 20 MHz wifi3, second floor, West, 1, -62, -59, -60.3, 2412 MHz, 20 MHz wifi2, first floor, East, 1, -81, -81, -81.0, 2412 MHz, 20 MHz Room #107 AP Location Chl Min Max Avg Frequency Width wifi1, first floor, West, 11, -69, -65, -66.7, 2462 MHz, 20 MHz wifi3, second floor, West, 1, -74, -72, -72.7, 2412 MHz, 20 MHz wifi2, first floor, East, 1, -81, -79, -80.0, 2412 MHz, 20 MHz Room #110 AP Location Chl Min Max Avg Frequency Width wifi2, first floor, East, 1, -46, -45, -45.7, 2412 MHz, 20 MHz wifi4, second floor, East, 11, -62, -60, -61.0, 2462 MHz, 20 MHz wifi3, second floor, West, 1, -93, -93, -93.0, 2412 MHz, 20 MHz wifi1, first floor, West, 11, -95, -92, -93.5, 2462 MHz, 20 MHz Room #111 AP Location Chl Min Max Avg Frequency Width wifi2, first floor, East, 1, -50, -48, -48.7, 2412 MHz, 20 MHz wifi4, second floor, East, 11, -60, -60, -60.0, 2462 MHz, 20 MHz wifi1, first floor, West, 11, -91, -89, -89.7, 2462 MHz, 20 MHz wifi3, second floor, West, 1, -94, -93, -93.5, 2412 MHz, 20 MHz Room #113 AP Location Chl Min Max Avg Frequency Width wifi2, first floor, East, 1, -61, -60, -60.3, 2412 MHz, 20 MHz wifi4, second floor, East, 11, -69, -68, -68.3, 2462 MHz, 20 MHz wifi1, first floor, West, 11, -96, -94, -94.7, 2462 MHz, 20 MHz wifi3, second floor, West, 1, -96, -96, -96.0, 2412 MHz, 20 MHz Room #114 AP Location Chl Min Max Avg Frequency Width wifi2, first floor, East, 1, -43, -43, -43.0, 2412 MHz, 20 MHz wifi4, second floor, East, 11, -72, -68, -70.3, 2462 MHz, 20 MHz wifi1, first floor, West, 11, -88, -85, -86.7, 2462 MHz, 20 MHz wifi3, second floor, West, 1, -92, -92, -92.0, 2412 MHz, 20 MHz Room #115 AP Location Chl Min Max Avg Frequency Width wifi2, first floor, East, 1, -37, -37, -37.0, 2412 MHz, 20 MHz wifi4, second floor, East, 11, -62, -60, -61.0, 2462 MHz, 20 MHz wifi1, first floor, West, 11, -86, -85, -85.3, 2462 MHz, 20 MHz wifi3, second floor, West, 1, -93, -83, -87.0, 2412 MHz, 20 MHz Room #116 AP Location Chl Min Max Avg Frequency Width wifi2, first floor, East, 1, -54, -52, -53.0, 2412 MHz, 20 MHz wifi4, second floor, East, 11, -63, -61, -62.0, 2462 MHz, 20 MHz wifi1, first floor, West, 11, -72, -72, -72.0, 2462 MHz, 20 MHz wifi3, second floor, West, 1, -94, -91, -92.7, 2412 MHz, 20 MHz Lobby second floor AP Location Chl Min Max Avg Frequency Width wifi4, second floor, East, 11, -55, -54, -54.3, 2462 MHz, 20 MHz wifi2, first floor, East, 1, -69, -66, -67.7, 2412 MHz, 20 MHz wifi3, second floor, West, 1, -80, -79, -79.3, 2412 MHz, 20 MHz wifi1, first floor, West, 11, -91, -90, -90.5, 2462 MHz, 20 MHz Room #201 AP Location Chl Min Max Avg Frequency Width wifi4, second floor, East, 11, -63, -61, -62.0, 2462 MHz, 20 MHz wifi2, first floor, East, 1, -76, -75, -75.3, 2412 MHz, 20 MHz wifi3, second floor, West, 1, -85, -85, -85.0, 2412 MHz, 20 MHz Room #202 AP Location Chl Min Max Avg Frequency Width wifi4, second floor, East, 11, -46, -45, -45.3, 2462 MHz, 20 MHz wifi2, first floor, East, 1, -62, -61, -61.7, 2412 MHz, 20 MHz Room #203 AP Location Chl Min Max Avg Frequency Width wifi4, second floor, East, 11, -53, -53, -53.0, 2462 MHz, 20 MHz wifi2, first floor, East, 1, -67, -66, -66.3, 2412 MHz, 20 MHz Room #204 AP Location Chl Min Max Avg Frequency Width wifi2, first floor, East, 1, -55, -54, -54.3, 2412 MHz, 20 MHz wifi4, second floor, East, 11, -60, -59, -59.7, 2462 MHz, 20 MHz wifi3, second floor, West, 1, -90, -89, -89.7, 2412 MHz, 20 MHz wifi1, first floor, West, 11, -97, -97, -97.0, 2462 MHz, 20 MHz Room #206 AP Location Chl Min Max Avg Frequency Width wifi4, second floor, East, 11, -68, -47, -54.3, 2462 MHz, 20 MHz wifi2, first floor, East, 1, -65, -63, -63.7, 2412 MHz, 20 MHz wifi3, second floor, West, 1, -86, -81, -83.7, 2412 MHz, 20 MHz wifi1, first floor, West, 11, -96, -93, -94.5, 2462 MHz, 20 MHz Room #207 AP Location Chl Min Max Avg Frequency Width wifi2, first floor, East, 1, -59, -58, -58.7, 2412 MHz, 20 MHz wifi4, second floor, East, 11, -62, -61, -61.7, 2462 MHz, 20 MHz wifi3, second floor, West, 1, -71, -70, -70.3, 2412 MHz, 20 MHz wifi1, first floor, West, 11, -88, -85, -86.7, 2462 MHz, 20 MHz Room #209 AP Location Chl Min Max Avg Frequency Width wifi3, second floor, West, 1, -64, -62, -63.0, 2412 MHz, 20 MHz wifi4, second floor, East, 11, -71, -70, -70.7, 2462 MHz, 20 MHz wifi2, first floor, East, 1, -76, -74, -75.3, 2412 MHz, 20 MHz wifi1, first floor, West, 11, -94, -88, -91.0, 2462 MHz, 20 MHz Room #210 AP Location Chl Min Max Avg Frequency Width wifi3, second floor, West, 1, -37, -36, -36.7, 2412 MHz, 20 MHz wifi1, first floor, West, 11, -59, -57, -58.0, 2462 MHz, 20 MHz wifi4, second floor, East, 11, -95, -95, -95.0, 2462 MHz, 20 MHz Room #211 AP Location Chl Min Max Avg Frequency Width wifi3, second floor, West, 1, -46, -44, -45.0, 2412 MHz, 20 MHz wifi1, first floor, West, 11, -71, -68, -69.7, 2462 MHz, 20 MHz Room #213 AP Location Chl Min Max Avg Frequency Width wifi3, second floor, West, 1, -66, -64, -64.7, 2412 MHz, 20 MHz wifi4, second floor, East, 11, -86, -84, -85.3, 2462 MHz, 20 MHz wifi1, first floor, West, 11, -94, -88, -91.0, 2462 MHz, 20 MHz  

The logs were reccorded with WiFi Analyzer for Android, from farproc. The 5GHz band is not showing because the tablet is not dual band.


Rooms #101 & #102

Rooms #103 & #104

Room #105

Room #106

Room #107

Room #110 & lobby first floor

Room #111

Room #113

Rooms #114 & #115

Room #116

Rooms #201 & #202

Room #203

Room #204

Room #206

Room #207

Room #209

Room #210

Room #211

Room #213 & lobby second floor

The graphs were reccorded with WiFi Analyzer for Android, from farproc. The 5GHz band is not showing because the tablet is not dual band.

Previous signal data.

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