POE Power problems

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May 8th, 2009
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I have recently installed an IPT solution for a customer. The core switch is a 6509-E. There are 240 POE ports

(WS-X6148A-GE-45AF) with CAC 3000 power supplies. I am using about 150 ports and now when I try to plug a new phone in, I get a system reached its power limit and the phone will not power up. If i unplug a different phone and plug in a new phone it will get power. The phones I am using are 7945. Has anyone come across this issue before.


Any help appreciated?


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sebastiandm Fri, 05/08/2009 - 03:33
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I came across a similar issue with a 48port 3750 where the switch is only able to supply power for x amount of phones depending on the model of the phone. You could use the device power packs for the phones if you have them.

nesharm2 Fri, 05/08/2009 - 04:45
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7945 requires 12w of power.

Try "show inlinepower" to see poweroutput on that switch

you can also Use the PoE Calculator tool for any such calculations



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