From: Ron Lim (ccie.lab.studygroup@gmail.com)
Date: Thu Nov 02 2006 - 00:00:29 ART
Hi,
By as far as possible try to set auto duplex and speed on aironets and IP
phones to avoid problems with PoE.
I realised this when I configured aironets through GUI.
Hope it helps!
Regards,
Ron
On 11/1/06, Alexei Monastyrnyi <alexeim@orcsoftware.com> wrote:
>
> Hi.
>
> Just from experience, 100m works fine for PoE with full
> autoconfiguration. I have some Cisco AiroNet 1130AG more then 50m away
> from cat6509, negotiating the same power as the ones within 50m range.
>
> cat6k> (enable) sh port inlinepower 5 | in on |Port
> Port InlinePowered PowerAllocated ActualConsumption Device
> IEEE class
> 5/1 auto on 15400 14023 12200 cisco+ieee
> class 3
> 5/32 auto on 15400 14023 12200 cisco+ieee
> class 3
> 5/33 auto on 15400 14023 12200 cisco+ieee
> class 3
> 5/34 auto on 15400 14023 12200 cisco+ieee
> class 3
>
> A.
>
> Jung, Jin wrote:
> > I am looking for some documents regarding to the Power over Ethernet and
> > length of cable.
> > One of VoIP engineer told me about 6 month ago that
> > "if I use POE for the VoIP phones and if it's going over long distance
> > 100f or more, I have to count for the minor loose of power on the CAT6
> > wire'. So If I require static 7W, I need to configure the switch for 8W
> > or 9W of power consumption.
> > I am trying to verify this for my power calculation and length of cable.
> > Does anyone have insight or documentation to support or not support this
> > statement.
> > Thanks..
> >
> >
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