Re: [c-nsp] 3560g PoE issue
Hi Gary, As i seen in sh power inline o/p few alcatel IP phones are class 0 while others class 2. Is this creating the problem ? Also as per my observation all phones are working but suddenly after an hour or day few phones gets power-off while others are working. So after restarting the switch, all IP Phones starts working. O/P of sh power inline is below Salessh power inline Available:370.0(w) Used:224.0(w) Remaining:146.0(w) Interface Admin Oper Power Device Class Max (Watts) - -- -- --- --- - Gi0/1 auto off0.0 n/a n/a 15.4 Gi0/2 auto on 7.0 Ieee PD 2 15.4 Gi0/3 auto off0.0 n/a n/a 15.4 Gi0/4 auto on 7.0 Ieee PD 2 15.4 Gi0/5 auto off0.0 n/a n/a 15.4 Gi0/6 auto on 7.0 Ieee PD 2 15.4 Gi0/7 auto off0.0 n/a n/a 15.4 Gi0/8 auto on 7.0 Ieee PD 2 15.4 Gi0/9 auto off0.0 n/a n/a 15.4 Gi0/10auto on 7.0 Ieee PD 2 15.4 Gi0/11auto on 7.0 Ieee PD 2 15.4 Gi0/12auto on 7.0 Ieee PD 2 15.4 Gi0/13auto off0.0 n/a n/a 15.4 Gi0/14auto on 15.4Ieee PD 0 15.4 Gi0/15auto on 15.4Ieee PD 0 15.4 Gi0/16auto off0.0 n/a n/a 15.4 Gi0/17auto on 7.0 Ieee PD 2 15.4 Gi0/18auto off0.0 n/a n/a 15.4 Gi0/19auto off0.0 n/a n/a 15.4 Interface Admin Oper Power Device Class Max (Watts) - -- -- --- --- - Gi0/20auto on 7.0 Ieee PD 2 15.4 Gi0/21auto off0.0 n/a n/a 15.4 Gi0/22auto off0.0 n/a n/a 15.4 Gi0/23auto on 7.0 Ieee PD 2 15.4 Gi0/24auto off0.0 n/a n/a 15.4 Gi0/25auto off0.0 n/a n/a 15.4 Gi0/26auto off0.0 n/a n/a 15.4 Gi0/27auto on 7.0 Ieee PD 2 15.4 Gi0/28auto off0.0 n/a n/a 15.4 Gi0/29auto off0.0 n/a n/a 15.4 Gi0/30auto on 7.0 Ieee PD 2 15.4 Gi0/31auto on 7.0 Ieee PD 2 15.4 Gi0/32auto off0.0 n/a n/a 15.4 Gi0/33auto off0.0 n/a n/a 15.4 Gi0/34auto on 15.4Ieee PD 0 15.4 Gi0/35auto on 7.0 Ieee PD 2 15.4 Gi0/36auto on 7.0 Ieee PD 2 15.4 Gi0/37auto on 15.4Ieee PD 0 15.4 Gi0/38auto on 7.0 Ieee PD 2 15.4 Gi0/39auto on 7.0 Ieee PD 2 15.4 Gi0/40auto off0.0 n/a n/a 15.4 Gi0/41auto off0.0 n/a n/a 15.4 nterface Admin Oper Power Device Class Max (Watts) - -- -- --- --- - Gi0/42auto on 7.0 Ieee PD 2 15.4 Gi0/43auto on 7.0 Ieee PD 2 15.4 Gi0/44auto on 15.4Ieee PD 0 15.4 Gi0/45auto off0.0 n/a n/a 15.4 Gi0/46auto on 7.0 Ieee PD 2 15.4 Gi0/47auto off0.0 n/a n/a 15.4 Gi0/48auto on 7.0 Ieee PD 2 15.4 --- On Sat, 12/12/09, Buhrmaster, Gary g...@slac.stanford.edu wrote: From: Buhrmaster, Gary g...@slac.stanford.edu Subject: RE: [c-nsp] 3560g PoE issue To: 'Nilesh Sawant' nilesh555...@yahoo.com Date: Saturday, December 12, 2009, 5:12 AM What could be the issue ? If all of the devices on that switch are class 3, you are only going to get 24 active PoE ports. If all the phones are class 3, any phone connected after the first 24 will fail to power on (and if some are class 2, and some class 3, you will get something between 24 and 48). Some Alcatel phones (the new, nicer ones) are class 3. ___ cisco-nsp mailing
Re: [c-nsp] 3560g PoE issue
As i seen in sh power inline o/p few alcatel IP phones are class 0 while others class 2. Is this creating the problem ? Note that all of your class '0' (unrecognized?) devices are being allocated 15.4 watts. That reduces the number of other devices you can use. When your failures occur, look at the total power allocated and I suspect you will find you are simply out of allocatable power. The power supply of that switch is not capable of providing a full 15.4 watts to every port at the same time. ___ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
Re: [c-nsp] 3560g PoE issue
Also, if you *KNOW* that those phones are not using 15.4watts you can setup the power consumption on each port: int range gi0/1 - 48 power inline consumption 7700 -- Tim On Sat, Dec 12, 2009 at 2:13 PM, Buhrmaster, Gary g...@slac.stanford.edu wrote: As i seen in sh power inline o/p few alcatel IP phones are class 0 while others class 2. Is this creating the problem ? Note that all of your class '0' (unrecognized?) devices are being allocated 15.4 watts. That reduces the number of other devices you can use. When your failures occur, look at the total power allocated and I suspect you will find you are simply out of allocatable power. The power supply of that switch is not capable of providing a full 15.4 watts to every port at the same time. ___ cisco-nsp mailing list cisco-...@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/ ___ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
[c-nsp] 3560g PoE issue
Hi, I am observing the problem with 48 ports 3560G in LAN infrastructure. We have alcatel IP phone which are connected to 3560G switches. Sometimes these IP phone are not getting power up , after restarting the switch IP phone gets power up. As per cisco theory it's deliver average 7.7w on all 48 ports or 15.4 w on 24 ports. i tried shut, no shut after IP phones gets power down, also tries to allocate 10-14w power on that particular interface, but no use. What could be the issue ? Regards, Nilesh ___ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
Re: [c-nsp] 3560g PoE issue
Nilesh Sawant wrote: Hi, I am observing the problem with 48 ports 3560G in LAN infrastructure. We have alcatel IP phone which are connected to 3560G switches. Sometimes these IP phone are not getting power up , after restarting the switch IP phone gets power up. As per cisco theory it's deliver average 7.7w on all 48 ports or 15.4 w on 24 ports. i tried shut, no shut after IP phones gets power down, also tries to allocate 10-14w power on that particular interface, but no use. What could be the issue ? Not sure about Alcatel, but we have seen a similar issue with some Polycom phones. The Polycom phones have the capability of adding sidecar units with additional display and buttons for DSS/BLF and the like. Even with no sidecars installed, the phones default to having the sidecar power enabled and as such request the full 15.4 watts from the switch. The Cisco switch will detect the requested power as 15.4 and deny power to additional phones once the aggregate power limit is reached based on this calculation. A configuration setting on the phone allows one to disable sidecar power and once this is done the phone requests a more reasonable six watts. In this mode all ports can be used. Keep in mind that TTBOMK power calculations in the switch are done by layer 2 messages indicating desired power from the connected device and not by an ammeter in the switch measuring actual power consumption. Check your Alcatel phones and see if they are capable of powering accessories that you aren't using. If so and you can disable this capability the phones may then negotiate with the switch to deliver less power and allow the use of more/all ports. -- Jay Hennigan - CCIE #7880 - Network Engineering - j...@impulse.net Impulse Internet Service - http://www.impulse.net/ Your local telephone and internet company - 805 884-6323 - WB6RDV ___ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
