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56 lines
2.2 KiB
Markdown
56 lines
2.2 KiB
Markdown
<!--
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Author: Xianjun jiao
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SPDX-FileCopyrightText: 2019 UGent
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SPDX-License-Identifier: AGPL-3.0-or-later
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-->
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- Power on two SDR boards. Call one board "adhoc1" and the other "adhoc2". On each board, the TX and RX antenna should vertical/orthogonal to each other as much as possible to gain a good TX/RX isolation.
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- Connect a computer to the adhoc1 via Ethernet cable. The computer should have static IP 192.168.10.1. Open a terminal on the computer, and then in the terminal:
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```
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ssh root@192.168.10.122
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(password: openwifi)
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service network-manager stop
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cd openwifi
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./wgd.sh
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(Wait for the script completed)
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ifconfig sdr0 up
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./sdr-ad-hoc-up.sh sdr0 44 192.168.13.1
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(Above command setup ad-hoc network at channel 44 with static IP assigned to sdr0 NIC)
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iwconfig sdr0
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```
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- You shold see output like:
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```
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sdr0 IEEE 802.11 ESSID:"sdr-ad-hoc"
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Mode:Ad-Hoc Frequency:5.22 GHz Cell: 92:CA:14:27:1E:B0
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Tx-Power=20 dBm
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Retry short limit:7 RTS thr:off Fragment thr:off
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Encryption key:off
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Power Management:off
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```
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If you see "Cell: Not-Associated", please wait and run "iwconfig sdr0" again until a randomly generated Cell ID appears.
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- Connect another computer to the adhoc2 via Ethernet cable. The computer should have static IP 192.168.10.1. Open a terminal on the computer, and then in the terminal:
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```
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ssh root@192.168.10.122
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(password: openwifi)
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service network-manager stop
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cd openwifi
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./wgd.sh
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ifconfig sdr0 up
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./sdr-ad-hoc-up.sh sdr0 44 192.168.13.1
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iwconfig sdr0
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```
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- You shold see output like:
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```
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sdr0 IEEE 802.11 ESSID:"sdr-ad-hoc"
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Mode:Ad-Hoc Frequency:5.22 GHz Cell: 92:CA:14:27:1E:B0
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Tx-Power=20 dBm
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Retry short limit:7 RTS thr:off Fragment thr:off
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Encryption key:off
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Power Management:off
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```
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The "Cell: 92:CA:14:27:1E:B0" should be the same as adhoc1, because the later joined node should discover the Cell ID of the existing network and join/get it automatically. If not, please adjust the antenna/distance and re-run the commands.
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Now the communication link should be already setup between the two ad-hoc nodes, and you can ping each other.
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