Power over Ethernet¶
The low cost nodes are powered over PoE, which can also be used to switch them on and off. We are using a Linksys SRW208MP PoE switch, which unfortunately has some limitations. The PoE settings can only be configured using the web interface (not via Telnet/SSH) and it effectively requires Microsoft Internet Explorer to display the GUI. Therefore we've come up with a script to switch the power from the command line using curl:
Usage: ./poe.sh <port1> <port2> <port3> <port4> <port5> <port6> <port7> <port8> <switch-address> <username> [<password>]
e.g. './poe.sh 0 0 1 0 1 0 0 0 10.0.1.201 admin' to enable power on ports 3 and 5 and disable power on all others