Network convergence – role in I/O virtualization What is a converged network? A single network capable of transmitting both Ethernet and storage traffic What is required to converge Fibre Channel? Encapsulate FC frames into Ethernet Frames –Fibre Channel over Ethernet (FCoE) Enhance Ethernet to ensure reliability in congested networks –Converged Enhanced Ethernet (CEE) a.k.a. “lossless” Ethernet

CEE – Detailed description 2 Ethernet DCB Data Center Bridging (DCB) −Set of new/enhanced protocols that support multiple traffic classes over any standard IEEE 802 network −Support lossy and lossless traffic classes −Part of the IEEE set of standards (LAN Bridging/Switching) −Amendments to IEEE 802.1Q, Virtual Bridged Local Area Networks o 802.1Qbb – Priority-based Flow Control (PFC) o 802.1Qaz – Enhanced Transmission Selection (ETS) DCB Capability Exchange Protocol (DCBX) o 802.1Qau – Congestion Notification (QCN) DCB + Converged Enhanced Ethernet (CEE) −CEE is new Ethernet infrastructure that implements DCB −The term “CEE” was coined by an ad hoc industry group that put together the original proposals for DCB to the IEEE −There are hardware and software changes required for CEE, so legacy Ethernet gear is not designed for converged traffic

Industry path to convergence Enabled Networks 1 hop Multi-hop2 hop Enclosure & Top-of-rack Top-of-rack enclosure aggregation End-of-row rack aggregation End-to-end CEE/FCoE CEE FCoE Final Ratified SpecSpec Next Gen Products Congestion management CEE configuration protocol INCITS T11.3 FC-BB-5 IEEE 802.1Qau (QCN) & Qbb (PFC) IEEE 802.1Qaz (ETS and DCBX)

What Are The Key Components Of An End-to-end, Converged Network? Converged Network Adapter (CNA) Converge traffic at the server Replaces NICs, HBAs Switches & Interconnects Converge traffic over CEE. Split to connect to legacy networks or connect to new FCoE switches and targets Replace traditional Ethernet and FC switches Target Storage Natively connects to FCoE/CEE networks Replace traditional FC storage

What is HP doing about FCoE and CEE? HP will deliver the converged edge –Converging the fabric further with FCoE and iSCSI –Even fewer interconnects to buy –Even fewer interconnects to power –Low power and lower costs CNA’s cards for backward compatibility LOM Change Cost Energy Time