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Articles
Articles: Renewing Cisco Certifications without sitting for a Cisco Exam. Covers CCNA, CCNP, CCIE, CCDE and all Specialist Levels	Read
Articles: Introduction to Cisco VIRL – Virtual Internet Routing Lab & Other Simulation Tools	Read
Articles: Fix Cisco VPN Client Break After Windows 10 Anniversary Update 1607 – 'This App Can’t Run on This PC'	Read
Articles: Install & Fix Cisco VPN Client on Windows 10 (32 & 64 Bit). Fix Reason 442: Failed to enable Virtual Adapter	Read
Articles: How to Fix Cisco VPN Client Error 51 – Unable to Communicate with the VPN Subsystem	Read
Articles: Introducing The Cisco Technical Support Mobile App (Apple iOS, Android Smartphones). Open, Monitor & Manage TAC Cases, RMAs, Products, Podcasts & More!	Read
Articles: Comparing Cisco VPN Technologies – Policy Based vs Route Based VPNs	Read
Articles: Unified Communications Components - Understanding Your True Unified Communications Needs	Read
Articles: Cisco VPN Client & Windows 8 (32bit & 64bit) - Reason 442: Failed To Enable Virtual Adapter - How To Fix It	Read
Articles: Comparing DMVPN Single Tier and Dual Tier Headend Architectures - IPSec VPN & mGRE Termination	Read
Articles: Dynamic Multipoint VPN (DMVPN) Deployment Models & Architectures	Read
Articles: Understanding Cisco Dynamic Multipoint VPN - DMVPN, mGRE, NHRP	Read
Articles: Troubleshooting Cisco VPN Client Windows 7 - How To Fix Reason 442: Failed to Enable Virtual Adapter	Read
Articles: Cisco SmartCare Update - Next Generation Appliance	Read
Articles: The Cisco Smart Care Service & Appliance	Read
Articles: WEB SSL VPN - The Next Wave Of Secure VPN Services	Read

How To Stop CallManager (CUCM) 7, 8, 9, 10.5 with…

Cisco Unified CallManager (CUCM) and its Voice Gateway relies on the telecommunication provider (telco) to send the correct call details for every in…

Cisco Routers

How To Configure DNS Server On A Cisco Router

The DNS protocol is used to resolve FQDN (Fully Qualified Domain Names) to IP addresses around the world. This allows us to successfully find and con…

Cisco Firewalls

Converting Cisco Firepower from Platform mode to…

This article explains how to configure a Cisco Firepower 2100 series device to operate in Appliance mode. We’ll show you how to switch from Platform…

Cisco Firewalls

Upgrading - Uploading AnyConnect Secure Mobility…

This article will show how to download and upload the newer AnyConnect 4.x VPN clients to your Cisco ASA Firewall appliance (5500 & 5500-X Series…

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Data Center Articles:

The Complete Cisco Nexus vPC Guide. Features & Ad…

Cisco virtual Port Channel (vPC) is a virtualization technology, launched in 2009, which allows links that are physically connected to two different…

Introduction to Cisco Nexus Switches – Nexus Prod…

This article introduces the Cisco Nexus product family (Nexus 9000, Nexus 7000, Nexus 5000, Nexus 3000, Nexus 2000, Nexus 1000V and MDS 9000). We exp…

NEXUS NX-OS: Useful Commands, CLI Scripting, Hint…

Whether you’re new to Cisco Nexus switches or have been working with them for years this article will show how to get around the Nexus NX-OS usi…

Nexus 7000/7700 Software Upgrade via ISSU. Comple…

This article shows how to perform an ISSU (In-Service Software Upgrade) on a Nexus Data Center switch (7000 and 7700 models) and avoid service and ne…