It’s a new innovation from Cisco Systems which happens to the industry’s first 60-watt Power over Ethernet technology which Cisco called Universal Power over Ethernet (UPOE).

Cisco Universal Power over Ethernet (UPOE) can offer twice the power per port of products from competing switch vendors – providing both power and network access to a greater range of devices through a single standard Ethernet cable. This can surely help to lower the total cost of IT operations. By using Cisco’s new UPOE line card and UPOE splitter, any device requiring up to 60-watt power can now be powered by Cisco’s Catalyst 4500E Switches. This includes Cisco IP phones, personal telepresence systems, compact switches and Cisco wireless access points.

[kml_flashembed movie="http://www.youtube.com/v/RASdhbNdFQU" width="425" height="350" wmode="transparent" /]

Currently Cisco is working with IEEE and third-party device manufacturers to standardize UPOE in next-generation, network-enabled devices. Which for sure may lead to new PoE standard from IEEE?

Currently  Samsung zero client desktop virtualization devices and BT IP turrets have integrated Cisco UPOE technology into their devices to allow customers the immediate advantage of using their existing Cisco network to power these solutions. This is good sign for this emerging technology. Cisco also tested many devices using UPOE technology like Oracle Sun ray clients.

Currently the Cisco Universal Power over Ethernet is available with a new line card on the Cisco Catalyst 4500E switch. The Single Cisco Catalyst Switch 4500E chassis can support up to 120 UPOE ports. The OPOE is utilizes the existing UTP Cabling standard Cat 5e or higher and RJ 45 connectors for deployment. This helps the customers to make use of their existing cabling infrastructure.

Cisco Systems introduces sleek and quit switches which are fanless and can also support POE pass-through. The compact Switches are available in two models 2960 and 3560 in a “C” version model. The main advantage of the 2960 and 3560 C series Switches are it can be deployed in  warehouses, conference rooms, classrooms, hotel rooms, cruise cabins, gaming floors, labs, doctor’s offices, and call centers.

The compact factor might help you to

• Dramatically reduce cabling costs: Eliminate the need for up to eleven expensive 100-meter cables and their wiring complexities.
• Deploy your switch anywhere at any time: The Catalyst Compact Switches are sleek and quiet (fanless) and can be placed on or mounted underneath desktops and countertops or on a wall.
• Eliminate the need for power outlets for your switch and devices: With Power over Ethernet (PoE) pass-through, you can deploy IP applications in locations without access to power outlets. The compact switch draws power from the single cable that connects it to the wiring closet.

One of greatest advantage of these compact switches is it protects the network data as the all the packets between the switch and the end device are encrypted right at the source.

An amazing series of Switches specially designed for SMBs. ]]> http://itknowledgeexchange.techtarget.com/network-technologies/cisco-systems-introduces-compact-switches/feed/ 0 http://itknowledgeexchange.techtarget.com/network-technologies/ciscos-enhance-poe-worked-for-power-more-than-20-watts/ http://itknowledgeexchange.techtarget.com/network-technologies/ciscos-enhance-poe-worked-for-power-more-than-20-watts/#comments Tue, 06 Jul 2010 06:13:57 +0000 Yasir Irfan http://itknowledgeexchange.techtarget.com/network-technologies/ciscos-enhance-poe-worked-for-power-more-than-20-watts/ In one of my previous articles I was talking about the POE compatibility issues between Cisco Catalyst 3750 E Switches and Cisco Aironet 1250 Series Access Point, I was getting following error.

Jun 21 08:30:28.447: %CDP_PD-2-POWER_LOW: All radios disabled – NEGOTIATED WS-C3

750E-48PD (8843.e17f.f60d)

Jun 21 08:31:28.451: %CDP_PD-2-POWER_LOW: All radios disabled – NEGOTIATED WS-C3

750E-48PD (8843.e17f.f60d)

After some research I figured out Cisco 3750 E Switch is capable of enhance POE , which can provide POE power of 20 Watts compared to standard 15.4 Watts per port, I updated the IOS for one my Cisco Catalyst 3750 E Switch from 12.2(35)SE5 to 12.2(53)SE2

 Once the IOS update was done I used the following command on the particular port to provide 20 watts of power

ITKE-AS01(config-if)# power inline port max 20000

Then AP Started working normally and all the wireless radios were up and running as demonstrated below.

After posting my article I did a little search on Cisco.com and I found the following white paper

“Cisco Enhanced PoE

To support new and emerging technology, many of Cisco’s customers have an immediate requirement for PoE in excess of 15.4W per port. For example, Cisco has introduced a new wireless access point compliant with the IEEE 802.11n draft 2.0 standards. This wireless access point, the Cisco Aironet® 1250 Series Access Point, supports two radios, which use MIMO and other new technologies to increase the throughput, reliability, and predictability of the wireless network. However, to function at full capability, the Cisco Aironet 1250 requires 18.5W of PoE.

Powering the Cisco Aironet 1250, with its 18.5W power requirement, from a switch that supports only the IEEE 802.3af standard decreases network efficiency, because network managers must either add more equipment and cable to provide the additional power needed or resort to utilizing only one radio in the Cisco Aironet 1250. Although the Cisco Aironet 1250 could easily receive full power from an IEEE 802.3at-compliant PSE, that standard has not yet been ratified.

That is why Cisco developed Cisco Enhanced PoE, Cisco’s extension to the IEEE 802.3af standard that delivers as much as 20W per port of inline power for devices that support Cisco Discovery Protocol (CDP). Cisco Enhanced PoE is offered on Catalyst 3750-E and Catalyst 3560-E switches starting in February 2008 with Cisco IOS® Software Release 12.2(44)SE. The Catalyst 6500 Series10/100/100 PoE linecards support Enhanced PoE with 12.2(33)SXH2 or later and the Catalyst 4500 E-Series support Enhanced PoE with 12.2(44)SG or later. When, for example the Cisco Aironet 1250 is connected to a Catalyst switch supporting Cisco Enhanced PoE, the access point can use Cisco Discovery Protocol to request a power level from the switch that is higher than the 15.4 Watts described in the IEEE 802.3af standard. After the Catalyst switch receives the Cisco Discovery Protocol message for higher power, it will grant the increased wattage to the Cisco Aironet 1250.

Cisco Enhanced PoE is by no means a replacement for or in competition with the IEEE 802.3at (PoE+) standard. It is simply a means of delivering PoE in excess of 15.4W per port to those customers who must immediately implement technologies requiring it and cannot wait for the 802.3at standard to be finalized.”

To read the complete white paper click this link. Also I am thankful to all those gentlemen who posted their comments and tried to provide a solution. The current IOS version of the Cisco Catalyst 3750 E Catalyst Switch I have  is 12.2(35)SE5, let me upgrade the IOS and see whether I can enjoy the enhance power capabilities of 3750 E Switch.

Jun 21 08:30:28.447: %CDP_PD-2-POWER_LOW: All radios disabled – NEGOTIATED WS-C3

750E-48PD (8843.e17f.f60d)

Jun 21 08:31:28.451: %CDP_PD-2-POWER_LOW: All radios disabled – NEGOTIATED WS-C3

750E-48PD (8843.e17f.f60d)

And when we checked the Cisco 1252 Aironet Access Point from the Internet Explorer we got this message.

Looking at the logs and graphical view I figured out the Cisco 1252 Aironet Access Point shut downed its radio interface as it was not getting the sufficient power.

Normally the Cisco 1252 Aironet Access Point requires more than 16 watts of power, whereas the Cisco 3750 E Switch is capable of providing maximum of 15.4 watts.

I am trying to find out a way to resolve these issues. The moment I get any resolution I will update you all folks.

In this article we will see how a Cisco Catalyst Switch 3750 – POE switch can be configured to support the Nortel IP phone and the power modes supported by the Cisco 3750 Switch.

The Cisco Catalyst Switches 3750-24PS and 3750-48PS support 370 Watts of inline power, and by default, the power mode of a port is set to auto.

Use the command show power inline to check the inline power configuration and status as demonstrated below

ITKE-AS01#sh power inline

Module Available Used Remaining

(Watts) (Watts) (Watts)

—— ——— ——– ———

1 370.0 114.8 255.2

Interface Admin (Watts) Power Class Max

Oper Device

——— —— ———- ——- ——————- —– —-

Gi1/0/1 auto on 15.4 Ieee PD 3 15.4

Gi1/0/2 static on 15.4 Ieee PD n/a 15.4

There are three modes of PoE configuration on Cisco Catalyst 3750 Switch.

1) Auto (Default, recommended with Nortel IP phones)

The switch automatically detects if the connected device requires power. If the switch

discovers a powered device connected to the port it grants power.

2) Static

The switch pre-allocates power to the port and guarantees that power will be available for the port even when no powered device is connected, the switch allocates the port configured maximum wattage. Any powered device that uses less than or equal to the maximum wattage is guaranteed to be powered when it is connected to the static port. However if the powered-device IEEE class is greater than the maximum wattage, the switch does not supply power to it.

3) (Never) Off

The switch disables powered-device detection and never powers the PoE port. Use this mode only when you want to make sure power is never applied to a PoE-capable port.