Cisco Nexus 7000 Design Manual page 44

FlexPod Implementation and Design
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Cisco Nexus 1000v Switch
The Cisco Nexus 1000v is a virtual Distributed Switch (vDS) that fully integrates into a VMware
vSphere enabled environment. The Cisco Nexus 1000v operationally emulates a physical modular
switch, with a Virtual Supervisor Module (VSM) providing control and management functionality to
multiple line cards. In the case of the Nexus 1000v, the ESXi nodes become modules in the virtual switch
when the Cisco Virtual Ethernet Module (VEM) is installed.
architecture.
Figure 19
Figure 20
vmnics are presented as Ethernet interfaces in the Cisco Nexus 1000v. In this example, the ESXi node
is the third module in the virtual distributed switch as the Ethernet interfaces are labeled as
module/interface #. The VEM takes configuration information from the VSM and performs Layer 2
switching and advanced networking functions, such as:
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VMware vSphere 5.1 on FlexPod with Nexus 7000 Using FCoE
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vSphere Virtual Machine File System (VMFS)—A high- performance cluster file system for ESXi
virtual machines.
vSphere High Availability (HA)—A feature that provides high availability for virtual machines. If
a server fails, the affected virtual machines are restarted on other available servers that have spare
capacity.
vSphere Distributed Resource Scheduler (DRS)—Allocates and balances computing capacity
dynamically across collections of hardware resources for virtual machines. This feature includes
distributed power management (DPM) capabilities that enable a data center to significantly reduce
its power consumption.
Cisco Nexus 1000v Architecture
shows a single ESXi node with a VEM registered to the Cisco Nexus 1000v VSM. The ESXi
PortChannels
Quality of service (QoS)
Figure 19 describes the Cisco Nexus 1000v