I have the Cisco Press book 'official certification guide' by David Hucaby, and have a couple of quick questions:
1) Cisco inline power (proprietary) method sends out a 340kHz test tone, and doesnt use a voltage check (as per 802.3af), as "Otherwise, other types of devices (normal PCs, for example) could be damaged". Just out of curiosity, if a switch is left as power inline auto (default), and a non-powered device is connected, does this imply that there is a flaw in 802.3af whereby the voltage check could damage the device?
2) The power inline static command is used "if you have a device that cannot interact with either of the powered device-discovery methods". Does this mean that essentially the power is left on on this port (I had previously thought that the static meant *only* that the *amount* of power was static)?
3) The book shows an example of the output from show power inline, and one of the ports is shown as Admin:static, Oper:On, Power:15.4, but this power isnt taken away from the calculated power remaining (in the book example), so this would appear that the power was 'on', but nothing connected. this would seem to answer yes to 2), but just confirming!
Any feedback appreciated!