RE: Voice Query - Unable to use all the ports on 3560 to

From: Burkett, Michael (Michael.Burkett@c-a-m.com)
Date: Wed Oct 24 2007 - 21:05:39 ART

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Can you send the port configuration on your switch, I have checked most
of my switches, granted they are 3750 series but all of the 7941 phones
are running at 6.3 without any issues. 48 ports fully loaded

ccd3750dsw01#sho power inline

Module Available Used Remaining
(Watts) (Watts) (Watts)
------ --------- -------- ---------
1 370.0 299.8 70.2
2 370.0 250.7 119.3
3 370.0 300.9 69.1
4 370.0 193.6 176.4
5 370.0 180.5 189.5
6 370.0 0.0 370.0
Interface Admin Oper Power Device Class Max
(Watts)
--------- ------ ---------- ------- ------------------- ----- ----
Fa1/0/1 auto on 6.3 IP Phone 7941 2 15.4
Fa1/0/2 auto on 6.3 IP Phone 7941 2 15.4
Fa1/0/3 auto on 6.3 IP Phone 7941 2 15.4
Fa1/0/4 auto on 6.3 IP Phone 7941 2 15.4
Fa1/0/5 auto on 6.3 IP Phone 7941 2 15.4
Fa1/0/6 auto on 6.3 IP Phone 7941 2 15.4
Fa1/0/7 auto on 6.3 IP Phone 7941 2 15.4
Fa1/0/8 auto on 6.3 IP Phone 7941 2 15.4
Fa1/0/9 auto on 6.3 IP Phone 7941 2 15.4
Fa1/0/10 auto on 6.3 IP Phone 7941 2 15.4
Fa1/0/11 auto on 6.3 IP Phone 7941 2 15.4
Fa1/0/12 auto on 5.0 IP Phone 7911 2 15.4
Fa1/0/13 auto on 6.3 IP Phone 7941 2 15.4
Fa1/0/14 auto on 6.3 IP Phone 7941 2 15.4
Fa1/0/15 auto on 6.3 IP Phone 7941 2 15.4
Fa1/0/16 auto on 6.3 IP Phone 7941 2 15.4
Fa1/0/17 auto on 6.3 IP Phone 7941 2 15.4
Fa1/0/18 auto on 6.3 IP Phone 7941 2 15.4
Fa1/0/19 auto on 6.3 IP Phone 7941 2 15.4
Fa1/0/20 auto on 6.3 IP Phone 7941 2 15.4
Fa1/0/21 auto on 5.0 IP Phone 7911 2 15.4
Fa1/0/22 auto on 6.3 IP Phone 7941 2 15.4
Fa1/0/23 auto on 6.3 IP Phone 7941 2 15.4
Fa1/0/24 auto on 6.3 IP Phone 7941 2 15.4
Fa1/0/25 auto on 6.3 IP Phone 7941 2 15.4
Fa1/0/26 auto on 6.3 IP Phone 7941 2 15.4
Fa1/0/27 auto on 6.3 IP Phone 7941 2 15.4
Fa1/0/28 auto on 6.3 IP Phone 7941 2 15.4
Fa1/0/29 auto on 6.3 IP Phone 7941 2 15.4
Fa1/0/30 auto on 6.3 IP Phone 7941 2 15.4
Fa1/0/31 auto on 6.3 IP Phone 7941 2 15.4
Fa1/0/32 auto on 6.3 IP Phone 7941 2 15.4
Fa1/0/33 auto on 6.3 IP Phone 7941 2 15.4
Fa1/0/34 auto on 6.3 IP Phone 7941 2 15.4
Fa1/0/35 auto on 6.3 IP Phone 7941 2 15.4
Fa1/0/36 auto on 6.3 IP Phone 7941 2 15.4
Fa1/0/37 auto on 6.3 IP Phone 7941 2 15.4
Fa1/0/38 auto on 6.3 IP Phone 7941 2 15.4
Fa1/0/39 auto on 6.3 IP Phone 7941 2 15.4
Fa1/0/40 auto on 6.3 IP Phone 7941 2 15.4
Fa1/0/41 auto on 6.3 IP Phone 7941 2 15.4
Fa1/0/42 auto on 6.3 IP Phone 7941 2 15.4
Fa1/0/43 auto on 6.3 IP Phone 7941 2 15.4
Fa1/0/44 auto on 6.3 IP Phone 7941 2 15.4
Fa1/0/45 auto on 6.3 IP Phone 7941 2 15.4
Fa1/0/46 auto on 6.3 IP Phone 7941 2 15.4
Fa1/0/47 auto on 6.3 IP Phone 7941 2 15.4
Fa1/0/48 auto on 6.3 IP Phone 7941 2 15.4

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Usankin, Andrew
Sent: Wednesday, October 24, 2007 6:07 PM
To: A.G. Ananth Sarma (GMail); Mark Snow
Cc: Cisco certification
Subject: RE: Voice Query - Unable to use all the ports on 3560 to
connect IP Phones

It appears also that phone power consumption may depend on it's display
brightness.

Andrew

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
A.G. Ananth Sarma (GMail)
Sent: Wednesday, October 24, 2007 11:23 AM
To: Mark Snow
Cc: Cisco certification
Subject: Re: Voice Query - Unable to use all the ports on 3560 to
connect IP Phones

Earlier, I tried reducing the power with the command:
power inline static maximum 6300

The phone lost the power totally.

Today, when I tried, the output of the show power inline is :

Temp#sh power inline
Available:370.0(w) Used:159.8(w) Remaining:210.2(w)

Interface Admin Oper Power Device Class Max
(Watts)
--------- ------ ---------- ------- ------------------- ----- ----
Fa0/1 auto off 0.0 n/a n/a 15.4
Fa0/2 auto off 0.0 n/a n/a 15.4
Fa0/3 auto on 12.9 IP Phone 7941 3 15.4
Fa0/4 auto on 12.9 IP Phone 7941 3 15.4
Fa0/5 auto on 12.9 IP Phone 7941 3 15.4
Fa0/6 auto off 0.0 n/a n/a 15.4
Fa0/7 auto off 0.0 n/a n/a 15.4
Fa0/8 auto on 12.9 IP Phone 7941 3 15.4
Fa0/9 auto on 12.9 IP Phone 7941 3 15.4
Fa0/10 auto on 12.9 IP Phone 7941 3 15.4
Fa0/11 auto on 12.9 IP Phone 7941 3 15.4
Fa0/12 auto on 12.9 IP Phone 7941 3 15.4
Fa0/13 auto off 0.0 n/a n/a 15.4
Fa0/14 auto on 12.9 IP Phone 7941 3 15.4
Fa0/15 auto off 0.0 n/a n/a 15.4
Fa0/16 auto off 0.0 n/a n/a 15.4
Fa0/17 auto off 0.0 n/a n/a 15.4
Fa0/18 auto off 0.0 n/a n/a 15.4
Fa0/19 auto off 0.0 n/a n/a 15.4
Fa0/20 auto off 0.0 n/a n/a 15.4
Interface Admin Oper Power Device Class Max
(Watts)
--------- ------ ---------- ------- ------------------- ----- ----
Fa0/21 auto off 0.0 n/a n/a 15.4
Fa0/22 auto off 0.0 n/a n/a 15.4
Fa0/23 auto off 0.0 n/a n/a 15.4
Fa0/24 auto off 0.0 n/a n/a 15.4
Fa0/25 auto off 0.0 n/a n/a 15.4
Fa0/26 auto off 0.0 n/a n/a 15.4
Fa0/27 auto off 0.0 n/a n/a 15.4
Fa0/28 auto off 0.0 n/a n/a 15.4
Fa0/29 auto off 0.0 n/a n/a 15.4
Fa0/30 auto off 0.0 n/a n/a 15.4
Fa0/31 auto off 0.0 n/a n/a 15.4
Fa0/32 auto off 0.0 n/a n/a 15.4
Fa0/33 auto off 0.0 n/a n/a 15.4
Fa0/34 auto off 0.0 n/a n/a 15.4
Fa0/35 auto off 0.0 n/a n/a 15.4
Fa0/36 auto on 12.9 IP Phone 7941 3 15.4
Fa0/37 auto off 0.0 n/a n/a 15.4
Fa0/38 auto on 5.0 IP Phone 7911 2 15.4
Fa0/39 auto off 0.0 n/a n/a 15.4
Fa0/40 auto off 0.0 n/a n/a 15.4
Fa0/41 auto off 0.0 n/a n/a 15.4
Fa0/42 auto off 0.0 n/a n/a 15.4
Fa0/43 auto off 0.0 n/a n/a 15.4
Fa0/44 auto on 12.9 IP Phone 7941 3 15.4
Fa0/45 auto off 0.0 n/a n/a 15.4
Fa0/46 auto on 12.9 IP Phone 7941 3 15.4
Fa0/47 auto off 0.0 n/a n/a 15.4
Fa0/48 auto off 0.0 n/a n/a 15.4
Temp#
when I tried the exact command you suggested: *power inline consumption
6300* on one port (My IP phone, of course) got the following out put: (
See the line in yellow color) and *IT WORKED !!!!!* though it took a
minute to power up:

Temp#show power in
Available:370.0(w) Used:153.2(w) Remaining:216.8(w)

............................... Output suppressed .....

As shown above, it showed up as *IeeePD*. When refreshed, it changed to*
IP Phone 7941*

When i tried the 2nd phone, it worked but I got the follwoing message:

Temp(config-if)#power inline consumption 6300
%CAUTION: Interface Fa0/5: Misconfiguring the 'power inline
consumption/allocation' command may cause damage to the switch and void
your warranty. Take precaution not to oversubscribe the power supply.
Refer to documentation.

Hope this is not going to damage the switch. What do you think?

I going to try the rest of the phones.

Thank you very much for the valuable input.

Regards,

Ananth Sarma

On 10/23/07, Mark Snow <msnow@ipexpert.com> wrote:
>
> Run this command and compare outputs:
>
> sh power inline
>
> You should see something similar to the below output - and check what
> the
> 1) Available Watts are 2) Used Watts and 3) How much Watts per device

> is in use in the Power column.
>
>
> Available:370.0(w) Used:63.0(w) Remaining:307.0(w)
>
>
> Interface Admin Oper Power Device Class Max
> (Watts)
> --------- ------ ---------- ------- ------------------- ----- ----
> Fa0/1 auto off 0.0 n/a n/a 15.4
> Fa0/2 auto on 6.3 IP Phone 7960 n/a 15.4
> Fa0/3 auto on 6.3 IP Phone 7960 n/a 15.4
> Fa0/4 auto off 0.0 n/a n/a 15.4
> Fa0/5 auto on 6.3 IP Phone 7960 n/a 15.4
> Fa0/6 auto off 0.0 n/a n/a 15.4
> Fa0/7 auto on 6.3 IP Phone 7960 n/a 15.4
> Fa0/8 auto off 0.0 n/a n/a 15.4
> Fa0/9 auto on 6.3 IP Phone 7960 n/a 15.4
> Fa0/10 auto off 0.0 n/a n/a 15.4
> Fa0/11 auto on 6.3 IP Phone 7960 n/a 15.4
> Fa0/12 auto off 0.0 n/a n/a 15.4
> Fa0/13 auto on 6.3 IP Phone 7960 n/a 15.4
> Fa0/14 auto off 0.0 n/a n/a 15.4
>
>
>
>
> The 7941, 7961 support both Cisco Inline Power which is 6.3 watts AND
> also the 802.3af standard which is 15.4 Watts.
> I believe that your phones will display using 15.4 or lesser watts -
> but more than 6.3 watts.
> Keep in mind as someone mentioned your total power budget on that
> switch is 370 watts.
>
>
> So you may need to limit it to each port as someone mentioned using
> this
> command:
> power inline consumption 6300
>
>
> Having never needed to limit the power on a 7941 and so thus not
> tested it
> - I don't know exactly what will happen - you may have interesting
> results
> - such as that your BLP button led's may not light - or screen
> brightness may be at 50% as is the case on the 7970's.
>
>
>
>
>
>
> Let us know!
>
>
>
> Mark Snow
> CCIE #14073 (Voice, Security)
> CCSI #31583
> Senior Technical Instructor - IPexpert, Inc.
> A Cisco Learning Partner - We Accept Learning Credits!
> Telephone: +1.810.326.1444
> Fax: +1.309.413.4097
> Mailto: msnow@ipexpert.com
>
> IPexpert - The Global Leader in Self-Study, Classroom-Based, Video On
> Demand and Audio Certification Training Tools for the Cisco CCIE R&S
> Lab, CCIE Security Lab, CCIE Service Provider Lab , CCIE Voice Lab and

> CCIE Storage Lab Certifications.
>
>
> On Oct 22, 2007, at 4:16 PM, A.G. Ananth Sarma (GMail) wrote:
>
>
> Hi Andrew / Mark,
>
> Thanks for the useful input. I will try andrew's suggestions.
>
> Mark: The phones ate Cisco IP Pphone 7941.
>
> Thanks again for any further input,
>
> Regards
>
> Ananth
>
>
> On 10/22/07, Mark Snow <msnow@ipexpert.com> wrote:
> >
> > Specifically what model of phones do you have plugged into this
> > 3560-48 PWR switch?
> >
> >
> > Mark Snow
> > CCIE #14073 (Voice, Security)
> > CCSI #31583
> > Senior Technical Instructor - IPexpert, Inc.
> > A Cisco Learning Partner - We Accept Learning Credits!
> > Telephone: +1.810.326.1444
> > Fax: +1.309.413.4097
> > Mailto: msnow@ipexpert.com
> >
> > IPexpert - The Global Leader in Self-Study, Classroom-Based, Video
> > On Demand and Audio Certification Training Tools for the Cisco CCIE
> > R&S Lab, CCIE Security Lab, CCIE Service Provider Lab , CCIE Voice
> > Lab and CCIE Storage Lab Certifications.
> >
> >
> > On Oct 22, 2007, at 1:52 PM, A.G. Ananth Sarma (GMail) wrote:
> >
> > > Guys,
> > >
> > > Thanks for the vlauble input. The actual issue here is the phones
> > > beyond 25th comes up but takes a lot of time say around 8 ~ 10
> > > minutes.
> > >
> > > Is this really a power issue? Are there any workaround to speed up

> > > the process?
> > >
> > > Regards,
> > >
> > > Ananth
> > >
> > >
> > > On 10/22/07, Daniel Fischer <Daniel.Fischer@gmx.net> wrote:
> > >>
> > >> Hi
> > >> the total power budget of a 48 port 3560 poe switch only allows
> > >> 24 poe devices in the highest power class (15.4Watts) per switch.

> > >> If your phones are in the highest class you need to spread them
> > >> among your switches to
> > > stay
> > >> within the 24 poe port threshold. You could also replace the 48
> > >> port switches with 24 port models to solve your power problem.
> > >>
> > >> Daniel
> > >>
> > >>
> > >> -------- Original-Nachricht --------
> > >>> Datum: Mon, 22 Oct 2007 07:53:48 +0300
> > >>> Von: "A.G. Ananth Sarma (GMail)" <ananth.sarma@gmail.com>
> > >>> An: "Cisco certification" < ccielab@groupstudy.com>
> > >>> Betreff: Voice Query - Unable to use all the ports on 3560 to
> > >>> connect
> > >> IP Phones
> > >>
> > >>> Guys sorry or posting this here. Still I wonder if someone can
> > >>> help me
> > >> in
> > >>> this?
> > >>>
> > >>> We have implemented IP Telephony in our company. We use 3560 PoE
> > >>> - 48
> > >>> port switches.
> > >>>
> > >>> When connecting more than 25 IP phones, it takes lot of time to
> > >>> boot the IP Phones and sometimes they do not come up.
> > >>>
> > >>> The configuration of ports are all same. Is there a known power
> > >>> issue here?
> > >>> Our Cisco dealer says so. Is there any way to tweak the config
> > >>> to accommodate at least 40 ~ 45 IP phones. At present we spread
> > >>> the load in to many 3560 switches with maximum of 25 phones on
> > >>> each.
> > >>>
> > >>> Thanks in in advance.
> > >>>
> > >>>
> > >>>
> > >>>
> > >>> Regards,
> > >>>
> > >>> A.G. Ananthasubramania Sarma
> > >>>
> > >>> ________________________________________________________________
> > >>> ____
> > >>> ___
> > >>> Subscription information may be found at:
> > >>> http://www.groupstudy.com/list/CCIELab.html
> > >>
> > >> --
> > >> Psssst! Schon vom neuen GMX MultiMessenger gehvrt?
> > >> Der kanns mit allen: http://www.gmx.net/de/go/multimessenger
> > >
> > > __________________________________________________________________
> > > ____
> > > _
> > > Subscription information may be found at:
> > > http://www.groupstudy.com/list/CCIELab.html
> >
> >
>
>
>
>

--
Regards,
A.G. Ananthasubramania Sarma
Tel:  (00971) 2 6315826 (R)
Mob: (00971)50-6115913/8120527
Email:
ananth.sarma@gmail.com
agsarma@eim.ae

Next message: Brian Dennis: "Re: native vlan"
Previous message: Ramil Gruela: "Re: Can you help me about VoIP ? I need your help"
Maybe in reply to: Darren: "RE: Voice Query - Unable to use all the ports on 3560 to"
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