Book Image

Implementing Cisco UCS Solutions

Book Image

Implementing Cisco UCS Solutions

Overview of this book

Cisco Unified Computing System(UCS) provides unique features for the contemporary data centres. Cisco UCS is a unified solution that consolidates computing, network and storage connectivity components along-with centralized management. Cisco UCS reduces TCO and improves scalability and flexibility. Stateless computing blade server's design simplifies the troubleshooting, and Cisco-patented extended memory technology provides higher virtualized servers consolidation results. A hands-on guide to take you through deployment in Cisco UCS. With real-world examples for configuring and deploying Cisco UCS components, this book will prepare you for the practical deployments of Cisco UCS data centre solutions. If you want to learn and enhance your hands-on skills with Cisco UCS solutions, this book is certainly for you. Starting with the description of Cisco UCS equipment options, this hands-on guide then introduces Cisco UCS Emulator which is an excellent resource to practically learn Cisco UCS components' deployment. You will also be introduced to all areas of UCS solutions with practical configuration examples. You will also discover the Cisco UCS Manager, which is the centralized management interface for Cisco UCS. Once you get to know UCS Manager, the book dives deeper into configuring LAN, SAN, identity pools, resource pools, and service profiles for the servers. The book also presents other administration topics including Backup, Restore, user's roles, and high availability cluster configuration. Finally, you will learn about virtualized networking, 3rd party integration tools and testing failure scenarios. You will learn everything you need to know for the rapidly growing Cisco UCS deployments in the real-world.
Table of Contents (19 chapters)
Implementing Cisco UCS Solutions
Credits
About the Authors
About the Reviewer
www.PacktPub.com
Preface
Index

Communication between VSM and VEM


There are two options for enabling communication between a VSM and a VEM: Layer 2 and Layer 3 (L2/L3). This is known as the Software Virtual Switch (SVS) mode.

Using Layer 2 connectivity

If the VSM and VEM are in the same Layer 2 domain, the best way to connect them is to use the Layer 2 connectivity mode which can be done through the following command line:

Nexus1000v(config-svs-domain)# svs mode L2

Using Layer 3 connectivity

If the VSM and the VEM are in different Layer 2 domains, the Layer 3 connectivity mode should be used. This can be achieved through the following command line:

Nexus1000v(config-svs-domain)# svs mode L3 

The following figure explains the Layer 3 connectivity in detail:

Using the Domain ID

The control information on a physical switch is normally transparent to the network module. This internal network is isolated by design. However, the N1KV control packets need to traverse the physical network between the VSM and the VEM.

Cisco N1KV uses...