[cisco-voip] 8841 no power connecting to 4510/4748

Tue Jul 11 11:57:46 EDT 2017

Tried multiple power static commands and none worked.

Any other thoughts on this?  The only thing I can think of is possibly need to do an IOS update of the 4500.

From: bmeade90 at gmail.com [mailto:bmeade90 at gmail.com] On Behalf Of Brian Meade
Sent: Monday, July 10, 2017 2:32 PM
To: Hendrix, Bill W. - US <george.hendrix at caci.com>
Cc: Carlo <carlo_calabrese2006 at yahoo.com>; cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] 8841 no power connecting to 4510/4748

Check out this bug- https://bst.cloudapps.cisco.com/bugsearch/bug/CSCuw03106

Try the workaround mentioned of "power inline static max 15400" on the port.

On Mon, Jul 10, 2017 at 2:30 PM, Hendrix, Bill W. - US <george.hendrix at caci.com<mailto:george.hendrix at caci.com>> wrote:
Yeah, tried that too.  It just won’t power the phone at all.  I inserted a power brick and the phone works fine in the voice vlan as it should.

From: bmeade90 at gmail.com<mailto:bmeade90 at gmail.com> [mailto:bmeade90 at gmail.com<mailto:bmeade90 at gmail.com>] On Behalf Of Brian Meade
Sent: Monday, July 10, 2017 2:28 PM
To: Carlo <carlo_calabrese2006 at yahoo.com<mailto:carlo_calabrese2006 at yahoo.com>>
Cc: Hendrix, Bill W. - US <george.hendrix at caci.com<mailto:george.hendrix at caci.com>>; cisco-voip at puck.nether.net<mailto:cisco-voip at puck.nether.net>

Subject: Re: [cisco-voip] 8841 no power connecting to 4510/4748

Bill,

Have you tried connecting direct to the switch to bypass cabling?  Maybe older phones are using Cisco inline power instead due to bad cabling?

On Mon, Jul 10, 2017 at 2:26 PM, Brian Meade <bmeade90 at vt.edu<mailto:bmeade90 at vt.edu>> wrote:
They support both IEEE 802.3af and 802.3at.

On Mon, Jul 10, 2017 at 2:15 PM, Carlo via cisco-voip <cisco-voip at puck.nether.net<mailto:cisco-voip at puck.nether.net>> wrote:
I don't think the 8841s do 3.af<http://3.af> which is what the 4748 sends out

Sent from my iPhone

On Jul 10, 2017, at 11:08 AM, Hendrix, Bill W. - US <george.hendrix at caci.com<mailto:george.hendrix at caci.com>> wrote:
Although we do have 4148 line cards in the chassis as well, the line card we are using is a 4748.

From: carlo_calabrese2006 at yahoo.com<mailto:carlo_calabrese2006 at yahoo.com> [mailto:carlo_calabrese2006 at yahoo.com]
Sent: Monday, July 10, 2017 2:05 PM
To: Hendrix, Bill W. - US <george.hendrix at caci.com<mailto:george.hendrix at caci.com>>
Cc: Ryan Huff <ryanhuff at outlook.com<mailto:ryanhuff at outlook.com>>; cisco-voip at puck.nether.net<mailto:cisco-voip at puck.nether.net>
Subject: Re: [cisco-voip] 8841 no power connecting to 4510/4748

I know that the 4148 is to old and will not support the new phones may look at the 4748 and see if it supports the new phone

Sent from my iPhone

On Jul 10, 2017, at 10:55 AM, Hendrix, Bill W. - US <george.hendrix at caci.com<mailto:george.hendrix at caci.com>> wrote:
CDP is enabled.  Below it the POE for the interface.  Most ports show as “off” until the phone is detected.  Like I said, 7962s working fine.

show power inline gi3/1
Available:1400(w)  Used:308(w)  Remaining:1092(w)

Interface Admin  Oper            Power(Watts)     Device              Class
                            From PS    To Device
--------- ------ ---------- ---------- ---------- ------------------- -----

Gi3/1     auto   off        0.0        0.0        n/a                 n/a

Interface  AdminPowerMax   AdminConsumption
             (Watts)           (Watts)
---------- --------------- --------------------

Gi3/1                 30.0                 15.4

From: Ryan Huff [mailto:ryanhuff at outlook.com]
Sent: Monday, July 10, 2017 1:40 PM
To: Hendrix, Bill W. - US <george.hendrix at caci.com<mailto:george.hendrix at caci.com>>; cisco-voip at puck.nether.net<mailto:cisco-voip at puck.nether.net>
Subject: Re: 8841 no power connecting to 4510/4748

Bill,

Verify that CDP and power inline auto are enabled from the port configuration perspective then from the enable prompt, what is the available/used wattage output of "show power inline"?

Thanks,

Ryan

________________________________
From: cisco-voip <cisco-voip-bounces at puck.nether.net<mailto:cisco-voip-bounces at puck.nether.net>> on behalf of Ryan Huff <ryanhuff at outlook.com<mailto:ryanhuff at outlook.com>>
Sent: Monday, July 10, 2017 1:28 PM
To: Hendrix, Bill W. - US; cisco-voip at puck.nether.net<mailto:cisco-voip at puck.nether.net>
Subject: Re: [cisco-voip] 8841 no power connecting to 4510/4748

 it show up  CDP?

Thanks,

Ryan
________________________________
From: cisco-voip <cisco-voip-bounces at puck.nether.net<mailto:cisco-voip-bounces at puck.nether.net>> on behalf of Hendrix, Bill W. - US <george.hendrix at caci.com<mailto:george.hendrix at caci.com>>
Sent: Monday, July 10, 2017 1:14 PM
To: cisco-voip at puck.nether.net<mailto:cisco-voip at puck.nether.net>
Subject: [cisco-voip] 8841 no power connecting to 4510/4748

Hey guys,

  I am testing an 8841 on a switch we have, but the switch doesn’t seem to be detecting the phone.

Phone info:

8841 - sip88xx.11-5-1SR1-1.loads

Switch info:

Switch WS-C4510R+E

Supervisor: WS-X45-SUP7-E (03.04.05.SG.151-2.SG5)

WS-X4748-RJ45V+E version 1

I also tested it in a WS-X4148-RJ45V slot, but it also doesn’t work.  Phone powers up fine connecting to a 3560G running 15.0 IOS.

Thanks,

Bill Hendrix

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