VMware Infrastructure 3 in a Cisco Network Environment

VMware Infrastructure 3 in a Cisco Network Environment May 28, 2008 Americas Headquarters Cisco Systems, Inc. 170 West Tasman Drive San Jose, CA 95134-1706 USA http://www.cisco.com Tel: 408 526-4000 800 553-NETS (6387) Fax: 408 527-0883 Text Part Number: OL-16503-01 ALL DESIGNS, SPECIFICATIONS, STATEMENTS, INFORMATION, AND RECOMMENDATIONS (COLLECTIVELY, "DESIGNS") IN THIS MANUAL ARE PRESENTED "AS IS," WITH ALL FAULTS. CISCO AND ITS SUPPLIERS DISCLAIM ALL WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OR ARISING FROM A COURSE OF DEALING, USAGE, OR TRADE PRACTICE. IN NO EVENT SHALL CISCO OR ITS SUPPLIERS BE LIABLE FOR ANY INDIRECT, SPECIAL, CONSEQUENTIAL, OR INCIDENTAL DAMAGES, INCLUDING, WITHOUT LIMITATION, LOST PROFITS OR LOSS OR DAMAGE TO DATA ARISING OUT OF THE USE OR INABILITY TO USE THE DESIGNS, EVEN IF CISCO OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. 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C O N T E N T S About the Document 1-1 Introduction 1-1 ESX Server Network and Storage Connectivity 1-2 ESX Server Networking Components 1-2 vmnics, vNICs and Virtual Ports 1-3 ESX Virtual Switch 1-4 Virtual Switch Overview 1-4 Port Groups 1-7 Layer 2 Security Features 1-10 Management 1-10 vSwitch Scalability 1-11 Incorrect Configurations with vSwitches 1-11 ESX LAN Networking 1-12 vSwitch Forwarding Characteristics 1-12 VLAN Tagging 1-15 Using NIC Teaming for Connectivity Redundancy 1-18 vSwitch Configuration 1-22 ESX Internal Networking 1-30 ESX Server Storage Networking 1-35 VMware ESX Server Storage Components 1-36 File System Formats 1-38 Multipathing and Path Failover 1-41 ESX Server Connectivity and Networking Design Considerations 1-44 LAN Connectivity 1-44 Preliminary Design Considerations 1-45 ESX Hosts with Two NICs 1-51 ESX Hosts with Four NICs 1-58 SAN Connectivity 1-66 FibreChannel Implementation Considerations 1-67 N-Port ID Virtualization 1-68 Performance Considerations 1-73 iSCSI Implementation Considerations 1-75 VMotion Networking 1-77 VMotion Migration on the same Subnet (Flat Networks) 1-79 VMware Infrastructure 3 in a Cisco Network Environment OL-16503-01 iii Contents ESX HA Cluster 1-82 Additional Resources 1-85 VMware Infrastructure 3 in a Cisco Network Environment iv OL-16503-01 VMware Infrastructure 3 in a Cisco Network Environment About the Document This document is a collaboration between Cisco and VMware. It documents a set of suggested best practices for deploying VMware Infrastructure (VI) 3.x and VMware ESX Server 3.x in a Cisco network environment. The document provides details regarding the internal constructs of the ESX Server and their relation to external Cisco network devices are discussed. This document is intended for network architects, network engineers, and server administrators interested in understanding and deploying VMware ESX Server 3.x hosts in a Cisco data center environment. Introduction Currently, there are efforts to consolidate and standardize the hardware and software platforms comprising the enterprise data center. IT groups are considering the data center facility, the servers it houses, and network components as a pool of resources rather than unrelated assets “siloed” to resolve specific business requirements. Server virtualization is a technique that allows the abstraction of server resources to provide flexibility and optimize usage on a standardized infrastructure. As a result, data center applications are no longer bound to specific hardware resources; thus making the application unaware of the underlying hardware, yet viewing the CPUs, memory, and network infrastructure as shared resource pools available via virtualization. Virtualization of network, storage, and server platforms has been maturing over time. Technologies such as virtual local area networks (VLANs), virtual storage area networks (VSANs), and virtual network devices are widely deployed in today’s enterprise data center. Mainframe legacy systems have been “virtualized” for many years, employing logical partitions (LPARs) to achieve greater resource utilization. The ability to break the link between physical hardware (such as CPU, memory, and disk) from an operating system provides new opportunities to consolidate beyond the physical level and to optimize resource utilization and application performance. Expediting this revolution is the introduction of more powerful x86 platforms built to support a virtual environment, namely the availability of multi-core CPU and the use of AMD Virtualization (AMD-V) and the Intel Virtualization Technology (IVT). Corporate Headquarters: Cisco Systems, Inc., 170 West Tasman Drive, San Jose, CA 95134-1706 USA Copyright © 2008 DCisco Systems, Inc. All rights reserved. ... - tailieumienphi.vn