VMware-vSphere5.5-Platform-Whats-New(19)

vSphere 5.5最新资料

What’s New in VMware vSphere 5.5 Platform After the packets are classified based on the qualifiers described in the “Traffic Filtering” section, users can choose to perform Ethernet (layer 2) or IP (layer 3) header–level marking. The markings can be configured at the port group level.

SR-IOV Enhancements

Single-root I/O virtualization (SR-IOV) is a standard that enables one PCI Express (PCIe) adapter to be presented as multiple, separate logical devices to virtual machines. In this release, the workflow of configuring the SR-IOV–enabled physical NICs is simplified. Also, a new capability is introduced that enables users to communicate the port group properties defined on the vSphere standard switch (VSS) or VDS to the

virtual functions.

The new control path through VSS and VDS communicates the port group–specific properties to the virtual functions. For example, if promiscuous mode is enabled in a port group, that configuration is then passed to virtual functions, and the virtual machines connected to the port group will receive traffic from other

virtual machines.

Enhanced Host-Level Packet Capture

Troubleshooting any network issue requires various sets of tools. In the vSphere environment, the VDS provides standard monitoring and troubleshooting tools, including NetFlow, Switched Port Analyzer (SPAN), Remote Switched Port Analyzer (RSPAN) and Encapsulated Remote Switched Port Analyzer (ERSPAN). In this release, an enhanced host-level packet capture tool is introduced. The packet capture tool is equivalent to the command-line tcpdump tool available on the Linux platform.

The following are some of the key capabilities of the packet capture tool:

• Available as part of the vSphere platform and can be accessed through the vSphere host command prompt • Can capture traffic on VSS and VDS

• Captures packets at the following levels

–Uplink

–Virtual switch port

–vNIC

• Can capture dropped packets

• Can trace the path of a packet with time stamp details

40GB NIC Support

Support for 40GB NICs on the vSphere platform enables users to take advantage of higher bandwidth pipes to the servers. In this release, the functionality is delivered via Mellanox ConnextX-3 VPI adapters configured in Ethernet mode.

T E C H N I C A L W H I T E P A P E R/19