Call for Interest PoE-plus

1. TR41.4.4-04-11-018-LM Call for Interest PoE-plus Daniel Feldman danielf@powerdsine.com Yair Darshan yaird@powerdsine.com Ronen Heldman ronenh@powerdsine.com

2. Agenda • Why go beyond 802.3af? • Higher power • Support mission critical applications with simple additional management requirements. • Benefits and opportunities • Problems • General scope • Why now is the time?

3. Why go beyond 802.3af? • To power more products in the existing PoE markets • Markets where part of the PD’s require more than 12.95W • To benefit more markets from Power over Ethernet • Markets that require more than 12.95W for PD’s • Support mission critical application by adding some management requirements • Quickly recovering from failure • For markets which need 99.999% uptime  Customer demand 

4. Higher power applications

5. 802.11 Dual Band Market Forecast Waiting for IDC’s approval to show data. Source: IDC June 2004

6. Supporting 802.3af mission critical applications • Several PoE markets demand 99.999% uptime • Need high survivability in case of system failure • Banking • Medical • Security • Point of Sale • Enterprise Wireless Networking on VoWLAN applications for these markets

7. The 802.3ad precedent • 802.3ad: Link Aggregation Protocol • IEEE802.3 optional standard for the data link, covering • Redundancy • Increased data transmission between two nodes (“high data”) • Link aggregation sub-layer in which multiple physical links may be aggregated together to form a single logical link • Backwards compatible with single links • Increased reliability in the power domain • Addition of redundancy in the power links hence increased resiliency

8. Next generation PoE – Benefits & Opportunities • To power more products in the existing PoE markets • To benefit more markets from Power over Ethernet • Replaces high power external adaptors • To allow higher up time of 802.3af PDs

9. Problems • No standard for high power • Some vendors have started to develop proprietary solutions for high power applications • Potential interoperability issues with 1000BT, 10G • Can’t interconnect different equipment • Some vendors have started to develop redundancy support for mission critical applications • May need to define minimum management requirements

10. General scope of study • High Power • How much power is required • How much power is possible • Considering setting a limit for high power levels in PoE technology • Today the power delivery capability of the LAN infrastructure is not efficiently utilized • We don’t wish to open this issue again in the future • Distinction between • 802.3af PD’s and high power PD’s • Interoperation with 802.3 and other standards • Power redundancy management at port level

11. Now is the time • There is a demand for higher power support from PoE • Wireless AP, Security world, Video phones other emerging PoE markets • Avoid proliferation of proprietary non-interoperable solutions • Enable mission critical applications that require redundancy support • Banking, point of sale, medical, etc… • Proprietary solutions are already available in the market • 802.3 standards process is the best way to achieve a standard