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

Fabric Interconnect device failure and recovery


UCS Fabric Interconnects are deployed in a cluster configuration from the control plane perspective. A Fabric Interconnect pair is in active/standby configuration. The active Fabric Interconnect is called primary and the standby Fabric Interconnect is called subordinate.

All control plane communication is handled by the primary Fabric Interconnect that manages the main configuration database. The main configuration database is stored on the primary and replicated on the subordinate Fabric Interconnect. The primary sends updates to the subordinate when configuration changes occur through dedicated Ethernet links called L1/L2.

In a situation where the Fabric Interconnect running the primary instance fails, the subordinate Fabric Interconnect takes the role of primary instantaneously. Access to UCS Manager stops, and you need to log out and log back in. In a split brain situation, where both Fabric Interconnects try to come online as the primary...