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Learn how Cisco ACI can be implemented to secure data center applications.

Understand how Cisco Intent-Based Networks and SDN technologies will transform your network to be the cornerstone of your digital success. Watch this recorded webinar today!

This paper helps you prepare to pass the latest version of the Cisco Certified Network Associate (CCNA) Routing and Switching exam.

This recorded webinar will discuss how Operational Technology Networks are transforming Enterprise Networks and discuss the unique challenges and solutions.

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.

In light of the recent tragic events in Haiti, it might be a good time to review some of the requirements for a well designed Uninterruptible Power Source (UPS) to be included in all of our critical network installations. As a CCNA, we are called upon to help maintai...

What is Network Time Protocol (NTP)? Well, it’s a network protocol used to synchronize clocks between computing systems over a packet switched network. It’s been around since the mid-1980s and was developed by David Mills at the University of Delaware; it is one of the oldest protocols still around on the Internet. NTP replaced other time synchronization technologies that didn’t have some capabilities to adjust time based on location of the time source or time server relative to the receiver or adjusting to the variation of delay found on typical data networks.

I recently came across an opportunity to use a relatively new feature in Cisco Unified Communications Manager (CUCM). Suppose you are the telecom administrator at a community hospital. During business hours, the Facilities Department is staffed and team members simpl...

Get an overview of Cisco Collaboration Systems Release (CSR) 10.6 with a focus on Cisco Unified Communications Manager (CUCM) supported features.

Learn to install, configure, and deploy ISE with enhanced labs written for ISE version 2.7 Patch 2 (Exclusive)