Руководство По Проектированию для Cisco Cisco Nexus 5010 Switch
Design Guide
Pod-based architecture can benefit from the fabric extender technology in two ways:
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Fabric extenders provide simplified cabling.
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Rack-and-roll deployment: The rack can be precabled and then attached to a Cisco Nexus 5000 Series from
which the fabric extender gets the code and the configuration.
which the fabric extender gets the code and the configuration.
For more details on how to design with the Cisco Nexus 5000 and 2000 Series at the access layer, see Chapter 6.
Cisco Nexus 1000V Series Overview
The Cisco Nexus 1000V Series Switches are virtual distributed switches providing Cisco NX-OS Software-based
switching for virtualized servers.
switching for virtualized servers.
The Cisco Nexus 1000V Switch is modeled as a chassis switch, with a data plane component called Virtual Ethernet
Modules (VEMs), which run on the individual virtualized servers and are managed by the equivalent of a supervisor,
called Virtual Supervisor Module (VSM). The VSM provides a centralized point of configuration for up to 64 VEMs.
Modules (VEMs), which run on the individual virtualized servers and are managed by the equivalent of a supervisor,
called Virtual Supervisor Module (VSM). The VSM provides a centralized point of configuration for up to 64 VEMs.
Figure 10 illustrates the abstraction model provided by the Cisco Nexus 1000V Series Switches. In this model, the
hardware switching function, provided by an access switch in this example, is the functional equivalent of a fabric in a
modular switch.
hardware switching function, provided by an access switch in this example, is the functional equivalent of a fabric in a
modular switch.
Figure 10.
Distributed Virtual Switches: Functional Model for Cisco Nexus 1000V Series Switches
This list provides information on some of the advantages of using a Cisco Nexus 1000V Switch for virtual machine
switching:
switching:
●
The ability for the network administrator to configure port profiles (port groups) with a Cisco NX-OS Software
command-line interface. These profiles appear on VWware vCenter as port groups that the server
administrator can choose from.
command-line interface. These profiles appear on VWware vCenter as port groups that the server
administrator can choose from.
●
The ability to configure network properties through port profiles without having to configure each VMware ESX
host in the same cluster independently. This means that all 64 VMware ESX hosts that are under the same
Cisco Nexus 1000V Switch are automatically configured when a new port profile is defined. The hosts are
therefore ready in case one virtual machine migrates from one VMware ESX host to a different one.
host in the same cluster independently. This means that all 64 VMware ESX hosts that are under the same
Cisco Nexus 1000V Switch are automatically configured when a new port profile is defined. The hosts are
therefore ready in case one virtual machine migrates from one VMware ESX host to a different one.
© 2010 Cisco Systems, Inc. All rights reserved. This document is Cisco Public Information.
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