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Fraunhofer FKIE testbed



Commel devices are used as Research Devices. They are based on Commell LE-575X boards, equipped with 2 GB RAM, 8 GB CompactFlash storage and two Compex WLM200NX a/g/n WiFi cards in an watertight aluminium casing.


This mini-pc are used as the new Research Devices. They have 4GB DDR3 RAM and a 120GB SSD over SATA. The CPU is a INTEL® Cedar Trail-M Processor N2600 (1.6GHz). . At the moment we use a 2GHz wifi card. In the future we want to switch to 5GHz.


The Community Devices are based on Ubiquity Bullets. Those are eqipped with 4 MB or 8 MB (“M”-Variant) flash storage and an build-in IEEE 802.11g (Bullet 2) or IEEE 802.11a (Bullet 5) adapter. In the FKIE CN, all Bullets are running an OpenWRT operating systems.


At the time of this writing, one testbed exists which consists of five Commell indoor nodes. Since the beginning of October we expanded the network to 15 nodes. The new ten Nodes are Mini-ITX-Barebones. Interconnectivity is available on the Commell-Boards via two wifi cards running on 5200 MHz (wlan0) and 5240 MHz (wlan1). At the Barebones we have one wifi card running on 2462Mhz (wlan0).


Regular nodes consist of one Community Device and one Research Device, which are directly interconnected. What is a Research Devices and What is a Community Devices can be read at this link.

Access nodes include a switch on the local LAN and allow to connect additional devices to the Testbed (e.g. User Terminals, Servers, etc.).

NodeTestbed Community Device Research Device
Hw IP Radios Hw MAC IP Radios
de11inoperable Bullet M5 fdb4:5429:38e9:1::1
5200 MHzCommell00:03:1d:0b:00:fbfdb4:5429:38e9:1::2
5200 MHz
5240 MHz
de12inoperable Bullet M5 fdb4:5429:38e9:2::1
5200 MHzCommell00:03:1d:0b:15:2dfdb4:5429:38e9:2::2
5200 MHz
5240 MHz
de13inoperable Bullet M5 fdb4:5429:38e9:3::1
5200 MHzCommell00:03:1d:0b:15:35fdb4:5429:38e9:3::2
5200 MHz
5240 MHz
de14inoperable Bullet M5 fdb4:5429:38e9:4::1
5200 MHzCommell00:03:1d:0b:15:31fdb4:5429:38e9:4::2
5200 MHz
5240 MHz
de15inoperable Bullet M5 fdb4:5429:38e9:5::1
5200 MHzCommell00:03:1d:0b:15:39fdb4:5429:38e9:5::2
5200 MHz
5240 MHz
de01indoor Bullet M5 fdb4:5429:38e9:6::1
5200 MHzBackbone00:30:18:AA:C4:B4fdb4:5429:38e9:6::2
2462 MHz
de02indoor Bullet M5 fdb4:5429:38e9:7::1
5200 MHzBarebone00:30:18:A9:D5:D9fdb4:5429:38e9:7::2
2462 MHz
de03indoor Bullet M5 fdb4:5429:38e9:8::1
5200 MHzBarebone00:30:18:A3:08:65fdb4:5429:38e9:8::2
2462 MHz
de04indoor Bullet M5 fdb4:5429:38e9:9::1
5200 MHzBarebone00:03:18:A2:A5:C2fdb4:5429:38e9:9::2
2462 MHz
de05indoor Bullet M5 fdb4:5429:38e9:5::1
5200 MHzBarebone00:03:18:A6:9F:68fdb4:5429:38e9:10::2
2462 MHz
de06indoor Bullet M5 fdb4:5429:38e9:11::1
5200 MHzBarebone00:30:18:A7:15:39fdb4:5429:38e9:11::2
2462 MHz
de07indoor Bullet M5 fdb4:5429:38e9:12::1
5200 MHzBarebone00:30:18:A7:05:03fdb4:5429:38e9:12::2
2462 MHz
de08indoor Bullet M5 fdb4:5429:38e9:13::1
5200 MHzBarebone00:30:18:A6:04:39fdb4:5429:38e9:13::2
2462 MHz
de09indoor Bullet M5 fdb4:5429:38e9:14::1
5200 MHzBarebone00:30:18:A4:02:09fdb4:5429:38e9:14::2
2462 MHz
de10indoor Bullet M5 fdb4:5429:38e9:15::1
5200 MHzBarebone00:30:18:AA:04:C4fdb4:5429:38e9:15::2
2462 MHz

Currently there are eleven of the fifteen nodes ready (rd12-rd15 are currently offline!)

Reachability Chart

Wed, 13. Feb 2013, 12:00:

5200 MHz de01 de02 de03 de04 de05
de01 - -86 dBm -80 dBm(-95 dBm) -70 dBm
de02 -85 dBm - -72 dBm -90 dBm -75 dBm
de03 -78 dBm -70 dBm - -75 dBm -64 dBm
de04 (-95 dBm) -92 dBm -77 dBm - -85 dBm
de05 -69 dBm -76 dBm -68 dBm -83 dBm -
5240 MHz de01 de02 de03 de04 de05
de01 - -73 dBm -70 dBm -89 dBm -66 dBm
de02 -75 dBm - -63 dBm -92 dBm -74 dBm
de03 -77 dBm -62 dBm - -84 dBm -72 dBm
de04 -88 dBm -88 dBm -80 dBm - -81 dBm
de05 -79 dBm -74 dBm -71 dBm -89 dBm -

“XX dBm”: Signal strength of working link
“(XX dBm)”: Signal strength of weak link
“-”: Not applicable
“ ”: No information available


The FKIE testbed runs IPv6/IPv4 in dual-stack without NAT. The CN uses the following address ranges:

fdb4:5429:38e9::/48 (IPv6) and (IPv4)

fd04:1b47:e492::/48 is used for the Overlay network

The address space of a node “N” is structured as follows:

  • fdb4:5429:38e9::N/128 and 10.64.0.N/32: The CD/CN mesh ID
  • fdb4:5429:38e9:N::/64 and 10.64.N.0/24: The local net
  • fdb4:5429:38e9:N::1 and 10.64.N.1: The CD in the LN
  • fdb4:5429:38e9:N::2 and 10.64.N.2: The RD in the LN
  • 10.64.N.64/26: LN address space for static sliver configuration (stateless autoconf may be used for IPv6)
  • 10.64.N.128/26: LN address space for DHCP configuration

Testbed Services

testbeds/fkie.txt · Last modified: 2014/10/27 14:58 by matthias