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

Brian Meade bmeade90 at vt.edu
Tue Jul 11 15:49:14 EDT 2017


I'd see what TAC thinks at this point.  Do you see anything show up in the
logs when connecting a phone?  There should be some CDP/PoE debugs you can
enable for more info.

On Tue, Jul 11, 2017 at 11:57 AM, Hendrix, Bill W. - US <
george.hendrix at caci.com> wrote:

> 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> 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] *On Behalf Of *Brian
> Meade
> *Sent:* Monday, July 10, 2017 2:28 PM
> *To:* Carlo <carlo_calabrese2006 at yahoo.com>
> *Cc:* Hendrix, Bill W. - US <george.hendrix at caci.com>;
> 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> 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> wrote:
>
> I don't think the 8841s do 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> 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@
> yahoo.com <carlo_calabrese2006 at yahoo.com>]
> *Sent:* Monday, July 10, 2017 2:05 PM
> *To:* Hendrix, Bill W. - US <george.hendrix at caci.com>
> *Cc:* Ryan Huff <ryanhuff at outlook.com>; 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> 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 <ryanhuff at outlook.com>]
> *Sent:* Monday, July 10, 2017 1:40 PM
> *To:* Hendrix, Bill W. - US <george.hendrix at caci.com>;
> 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> on behalf of Ryan
> Huff <ryanhuff at outlook.com>
> *Sent:* Monday, July 10, 2017 1:28 PM
> *To:* Hendrix, Bill W. - US; 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> on behalf of
> Hendrix, Bill W. - US <george.hendrix at caci.com>
> *Sent:* Monday, July 10, 2017 1:14 PM
> *To:* 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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