[AusNOG] Single Switch Full 48-Port PoE Support

[Karl Hardisty]

The Brocade ICX6450-48P runs all ports at 15.4W. The internal power budget is 780w vs 370w in the Cisco. Good pricing atm (at least here in NZ) too. 

k.

Sent from my unicorn 

On 11/09/2013, at 3:54 PM, James Andrewartha <trs80 at ucc.gu.uwa.edu.au> wrote:

> Hi Tim,
> 
> On Wed, 11 Sep 2013, Tim March wrote:
>> The phones are Polycom VVX 500 that draw a maximum of 5W per port for a
>> total of 240W per switch. We've bene looking at 2960's and this fits
>> nicely within it's 370W PoE budget. However, the .3af advertisement from
>> the phone gets interpreted as Class-0 (15.4W) and the switch will only
>> power >= 28 devices concurrently.
>> 
>> On the Catalyst we're able to get around this (I think?) with the `power
>> inline max` config directive to force it to spread the power budget
>> across all ports.
>> 
>> For what we're trying to do a set of 2960's will come in around $25k.
>> 
>> My question is: Can any of you guys suggest cheaper switches that will
>> allow us to run 48 x 5W PoE from a single device with the ability to
>> ignore the 15.4W .3af advertisement that will tell the switch to shut
>> down the additional ports?
> 
> Enterasys switches can do this, they'll reallocate unused power back to 
> the central pool for other devices: https://lists.unc.edu/read/archive?id=5739276 
> 
> Used B2G124-48Ps can be had on eBay for under $1k, although I'd recommend 
> going for B3G124-48Ps if the budget stretches.
> 
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