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GRE Tunnel Theory and Configuration: CCNP Routing and Switching ROUTE 300-101: Aug 28, 2014; This lesson, excerpted from CCNP Routing and Switching ROUTE 300-101 Complete Video Course, discusses the theory behind a Generic Routing Encapsulation (GRE) tunnel and describes how a GRE tunnel can be combined with an IPsec tunnel to add security. it concludes by configuring and verifying a GRE tunnel.

High Availability Commands for CCNP BCMSN: Nov 30, 2007; This chapter provides information on and commands for Hot Standby Routing Protocol, Virtual Router Redundancy Protocol, and Gateway Load Balancing Protocol.

Hot Standby Router Protocol (HSRP) Configuration: Sep 23, 2013; In this article, networking consultant Sean Wilkins explains how Hot Standby Redundancy Protocol (HSRP) devices communicate together. The article then delves into the commands and configuration steps required to get HSRP up and operating between devices.

How Can I Possibly Learn Everything in the New ICND1?: May 2, 2013; Anthony Sequeira provides steps you can follow that should help you pursue excellence in entry-level Cisco certifications.

How Can I Possibly Learn Everything in the New ICND2?: May 2, 2013; Anthony Sequeira breaks down the ICND2 exam content, letter for letter, with a focus on scope that you should know.

How Does Cisco's Overhaul of the CCNP Certification Affect CCNP Candidates? An Interview with Wendell Odom: Feb 8, 2010; Linda Leung and Wendell Odom discuss the major changes in the new Cisco CCNP exams.

Identifying Cisco Network Threats: Dec 5, 2003; To become a Cisco Certified Security Professional you need to understand all kinds of threats to your network. Learn to identify threats by their origin and by their type.

Implementing Cisco IP Switched Networks (SWITCH) Foundation Learning Guide: Campus Network Architecture: Jun 4, 2015; This chapter from Implementing Cisco IP Switched Networks (SWITCH) Foundation Learning Guide: (CCNP SWITCH 300-115) covers implementing VLANs and trunks in campus switched architecture, understanding the concept of VTP and its limitation and configurations, and implementing and configuring EtherChannel.

Implementing Cisco IP Switched Networks (SWITCH) Foundation Learning Guide: Fundamentals Review: May 27, 2015; This chapter from Implementing Cisco IP Switched Networks (SWITCH) Foundation Learning Guide: (CCNP SWITCH 300-115) covers the following basic switching topics as a review to CCNA: hubs and switches, bridges and switches, switches of today, broadcast domains, MAC addresses, the basic Ethernet frame format, basic switching function, VLANs, the Spanning Tree Protocol, trunking, port channels, and multilayer switching (MLS).

Implementing Cisco IP Switched Networks (SWITCH) Foundation Learning Guide: Network Design Fundamentals: Jun 1, 2015; This chapter from Implementing Cisco IP Switched Networks (SWITCH) Foundation Learning Guide: (CCNP SWITCH 300-115) begins the journey of exploring campus network design fundamentals by focusing on a few core concepts around network design and structure and a few details about the architecture of Cisco switches.

Implementing Cisco Unified Communications Manager, Part 2 (CCNP Voice): Examining Remote-Site Redundancy Options: Aug 25, 2011; This chapter provides an overview of the different options with remote-site redundancy in CUCM multisite installations.

Implementing Cisco Unified Communications Manager: Digit Manipulation (CCNP Voice): Oct 1, 2011; This chapter describes digit manipulation tools that allow a CUCM administrator to implement flexibility and transparency in the dial plan of a company.

Implementing Cisco Unified Communications: Introducing Dial Plans: Jun 15, 2011; In this chapter Kevin Wallace describes the characteristics of a dial plan and associated components.

Implementing Device Mobility in Cisco Unified Communications Manager: Jun 10, 2009; This chapter describes Device Mobility, a new feature of CUCM allows CUCM endpoints to be dynamically reconfigured based on their actual location as determined by the IP address that is used by the device.

Inner Workings of the Domain Name System (DNS): Nov 24, 2015; When you type an address into a browser and hit Enter, you expect to arrive at the intended website. Without the Domain Name System (DNS), that wouldn't happen. Whether simple or very complex, networks worldwide rely on the DNS to connect client and target. Sean Wilkins, co-author of CCNA Routing and Switching 200-120 Network Simulator, explains how DNS connects one person or server with another, and why you need to know about this undervalued service.

Integrated IS-IS Commands for CCNP BSCI: Dec 7, 2007; Learn the background of and commands for many IS-IS topics on the CCNP BSCI exam.

Interactive Cisco Career Certification Reading List: Jan 12, 2010; Certification expert Tim Warner provides a visual breakdown of the available Cisco certifications as well as selected reading lists for each.

Intermediate System-to-Intermediate System (IS-IS) Basics for the Cisco BSCI Exam: Nov 13, 2003; This Flash Cards excerpt gives you the basic facts about IS-IS you need to know for the Cisco BSCI exam.

Interview with CCNA Authors Lynn Maynes and Gary Heap: Jan 24, 2003; Here's what Gary Heap and Lynn Maynes, both CCIEs, have to say about their CCNA book and the CCNA exam.