Book Image

Implementing Cisco UCS Solutions - Second Edition

By : Anuj Modi, Prasenjit Sarkar
Book Image

Implementing Cisco UCS Solutions - Second Edition

By: Anuj Modi, Prasenjit Sarkar

Overview of this book

Cisco Unified Computer System (UCS) is a powerful solution for modern data centers and is responsible for increasing efficiency and reducing costs. This hands-on guide will take you through deployment in Cisco UCS. Using real-world examples of configuring and deploying Cisco UCS components, we’ll prepare you for the practical deployments of Cisco UCS data center solutions. If you want to develop and enhance your hands-on skills with Cisco UCS solutions, this book is certainly for you. We start by showing you the Cisco UCS equipment options then introduce Cisco UCS Emulator so you can learn and practice deploying Cisco UCS components. We’ll also introduce you to all the areas of UCS solutions through practical configuration examples. Moving on, you’ll explore the Cisco UCS Manager, which is the centralized management interface for Cisco UCS. Once you get to know UCS Manager, you’ll dive deeper into configuring LAN, SAN, identity pools, resource pools, and service profiles for the servers. You’ll also get hands-on with administration topics including backup, restore, user’s roles, and high availability cluster configuration. Finally, you will learn about virtualized networking, third-party integration tools, and testing failure scenarios. By the end of this book, you’ll know everything you need to know to rapidly grow Cisco UCS deployments in the real world.
Table of Contents (20 chapters)
Title Page
Credits
About the Authors
www.PacktPub.com
Customer Feedback
Preface

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 diagram 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 the...