HP 2626 pwr question

[brarnold]

We have that switch in our server room and we are trying to get power to phones. Is there something we have to configure to the ports for the power to the phones? When we patch in the ethernet cable from the phone to the switch there is no light on the port or no power to the phone.

Thanks in advance!

 

[nokernel]

I just wan to be shure that you have enough power for all of your devices, did you check how much watts eatch devices are going to take if they all connect at the same time and eat up their maximum wattage?

And yes you must enable the power over ethernet on the switch. Here are the poe commands!

You must be in the interface config to enable poe
Ex.
interface 40-48
power [critical|high|low]

Here are the poe commands:
(config)# show power-management ?
(config)# power threshold ?
(config)# show power

Have fun!

 

[brarnold]

Right now we are just trying to get any port to light up. We have one Internet phone we are testing with. If we use the apater the phone came with the port (any port) will light up, but if we try to use the power from the switch it does not.

 

[nokernel]

And did you enabled poe?

And let me explain a bit how this works with HP switches. So you plugg in a device on a POE enabled port. After you have connected the device, the switch send a packet to the device asking him if he want's power, if the device dont answer then the switch wont send the POE, so if your device have an external adapter maybe it is now able to respond back to the switch that he wants the power so the switch dont sent POE. You may want to see if your phone is able to respond back. I dont remember witch specifications is that question and answer but it is how it works.

 

[brarnold]

Thanks for replying! I'm not sure how to tell if the phone is communicating? It is a new Nortel IP 2004 phone and all the spec.s seem to be ok. It's autosensing 10/100, 802.3af, -48 VDC lan feed, autolearning MAC Address, etc... It says "fixed priority to phone port based on hardware". We are using CAT 5 E cabling.

So if we use those commands that you gave us the switch should give power?

Thanks!

 

[nokernel]

Yes, you can simply use show power to see if first you have POE enabled on the switch. If you didn't enabled POE then it is not enabled by default on 26xx switches.

 

[nokernel]

And another thing, if you want to have a good sound quality you may want to look around vlans and vlans priorisation.

 

[brarnold]

Here is what the switch says:

406 watts operational status on

power in use 0 w +/- 6 w usage Threshold: 80%


I did a config t
# interface 1-4 power critical
# exit

it shows 1-4 power enabled critical searching

it's set on auto flow control disable power class 0


*****still no power to the phone when patched into 1 thru 4???


Thanks!

 

[nokernel]

Now im speech less. You may go on HP side to find more information. Maybe there is something slipping out of my mind. If you find out post your solution here, im very interrested in that.

 

[brarnold]

It came down to different 802.3af specs. Nortel uses a non-data pairs only and you need the option of the data and non-data pair for HP and Cisco. You would think they would all be the same????? per Nortel.

 

[nokernel]

What I know is that HP is using the data wires to send the Power, because of installation with cat-3 wires where you only have 2 pairs in them.