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Grow your career potential and become a Microsoft expert with the Microsoft Specialty Certification. See our available Microsoft courses at Global Knowledge.

Learn everything you need to know about IT and technology trade shows and how they provide additional opportunities to hear about new technologies, talk with vendors, develop new skills, take certification exams, connect with peers in the industry and have a good time. Read now >

Ideal for those involved in the development, administration, and change management of the DataStage environment and programs, this paper provides guidance on simplifying the DataStage change management process and helps you understand what's required to promote DataStage objects from one environment to another, or in the worst case, disaster recovery.

This white paper explains how Global Knowledge can help your organization build a more engaged, highly skilled workforce through IT training. It presents the findings of recent surveys, completed by more than 3,200 Global Knowledge students that have attended training within the past eight months. Learn the top benefits that organizations receive from training their employees, the expected productivity gain and much more.

Problem Solving - Root Cause Analysis using Kepner Tregoe

Co-authors Michael Scarborough and Ryan Ballmer discuss some key differences in the new Global Knowledge ITIL courseware.

Michael Scarborough and Ryan Ballmer, co-authors of Global Knowledge ITIL courseware, discuss how to become an ITIL expert.

Michael Scarborough and Ryan Ballmer, co-authors of Global Knowledge ITIL courseware, discuss why ITIL is important to businesses.

In this post I’ll focus on a topic that’s mentioned in the Cisco FIREWALL training class but isn’t emphasized there or in the online Cisco ASA documentation. When configuring failover on a pair of ASA security appliances, a situation can arise in which network disruption occurs due to the secondary ASA in a failover pair becoming active first and then the primary comes online second. Both the documentation and the courseware point out that this causes the secondary (and active ASA) to swap its interface MAC addresses with those of the primary. Being naturally skeptical about this behavior, I decided to investigate. The rest of this post illustrates my confirmation of this phenomenon.