SG300-28MP power inline or shutdown?

[viningele]

I have a customer with a SG300-28MP and they want to be able to shut down or enable wi-fi when ever.  Since I have AMX touch panels mounted in various locations I want to give them the ability via the touch screens to enable or disable or even select on/off times by enabling/disabling the POE on the wi-fi trunk ports (direct connect to APs only).

Questions:

should I just use "shutdown/no shutdown" or "power inline never/power inline auto" commands?  What's the difference as this application is concerned?

when I use the command "power inline [auto | never]" I get the following from the switch:

SG300-28MP(config)#int range gi22-24
SG300-28MP(config-if-range)#power inline auto
SG300-28MP(config-if-range)#09-Nov-2013 00:34:12 %LINK-I-Up:  gi22
09-Nov-2013 00:34:13 %LINK-I-Up:  gi23
09-Nov-2013 00:34:14 %LINK-I-Up:  gi24
09-Nov-2013 00:34:17 %STP-W-PORTSTATUS: gi22: STP status Forwarding
09-Nov-2013 00:34:18 %STP-W-PORTSTATUS: gi23: STP status Forwarding
09-Nov-2013 00:34:19 %STP-W-PORTSTATUS: gi24: STP status Forwarding
09-Nov-2013 00:34:29 %LINK-W-Down:  gi22
09-Nov-2013 00:34:30 %LINK-W-Down:  gi23
09-Nov-2013 00:34:31 %LINK-W-Down:  gi24
09-Nov-2013 00:34:32 %LINK-I-Up:  gi22, aggregated (1)
09-Nov-2013 00:34:33 %LINK-I-Up:  gi23, aggregated (1)
09-Nov-2013 00:34:34 %LINK-I-Up:  gi24, aggregated (1)
09-Nov-2013 00:34:36 %STP-W-PORTSTATUS: gi22: STP status Forwarding, aggregated (1)
09-Nov-2013 00:34:37 %STP-W-PORTSTATUS: gi23: STP status Forwarding, aggregated (1)
09-Nov-2013 00:34:39 %STP-W-PORTSTATUS: gi24: STP status Forwarding, aggregated (1) 

Just out of curiousity what does I and W represent in the LINK and STP status returned?

[viningele]

After a little searching I'm gonna assume I is for informational status and W is for warning.  Now any answer for the main question?

[Tom Watts]

Hi Vini, there is no difference in your application. If you have a POE device connected to a port and you shut down the POE, there won't be any link state since the device has no power. Conversely, shutting down the port shuts down the port.

There isn't really a difference at all except the fact that if someone moves a connection of a POE device while the port is shut down it won't come back up until the port is no longer shut down.

-Tom
Please mark answered for helpful posts

[viningele]

Does shutdown also terminate power or just the link state.  I'd prefer to remove power to the radios and unfortunately I have no POE switch on hand to test and the one is question is remote.  A radio with power and no link just makes everyone think the wi-fi is active and should be working when in fact it doesn't.  

[Tom Watts · Accepted solution]

Hi Vini, if you shut down the port, it won't allocate power on the pairs.

-Tom
Please mark answered for helpful posts

[viningele]

That would make sense but I had to ask since doing things that make sense doesn't seem to be the norm now a days.  Thanks

[ludikris]

I have E-Metro Tel POE phones and when I use shut / no shut, the phone only says no network but stays powered on by poe.  if I use the power inline never / auto  it actually reboots the phone properly...  

this is the difference between my 2960 cisco switches and these white cisco business switches cbs350 - which have a gui for non cli use.

I wish commands were universal