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This page describe wireless Ethernet access in CSIM facility.

CSIM is using D-Link DIR-880L  and Lynksys E3000 dual band access points with DD-WRT firmware. It's providing up to 600 Mbps connection through 802.11n.

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 three wireless networks: AIT-CSIM, AIT-NON-CSIM and eduroam.

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.

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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for Android