The VIRL Book – A Guide to Cisco’s Virtual Internet Routing Lab (Cisco Lab)

Another great review by Yasir Irfan: The VIRL Book – A Guide to Cisco’s Virtual Internet Routing Lab. Learn to setup, troubleshoot and design complex topologies. Integrate VIRL with your network and other virtual machines. Best practices when used for certification studies or testing new network designs and much more.
http://bit.ly/virl-book

Introduction to Cisco VIRL – Virtual Internet Routing Lab & Other Simulation Tools

Create your own virtual Cisco Lab with ASA Firewalls, Nexus – Catalyst switches and Routers with the latest firmware. Use VIRL for certification study, troubleshooting, lab concept designs and more.
http://bit.ly/ciscovirl

Cisco Nexus 7000 Series Module Shutdown and Removal Procedure

Step-by-step instructions, photos and important tips on how to correctly shutdown and remove a Cisco Nexus 7000 series module. Avoid common mistakes and problems. Nexus 7010, 7018, 7009, 7004 switches covered.
http://bit.ly/nexus7000

Palo Alto Firewalls Security Zones – Tap Zone, Virtual Wire, Layer 2 and Layer 3 Zones

Understand the concept and different type of a security zones. Discover how Tap Zone, Virtual Wire, Layer 2 and Layer 3 zones are used and treated by the Firewall. How to create and configure a Security Zone.
http://bit.ly/2eeXMNE

Configuring Spanning Tree BPDUGuard and Errdisable Interface Automatic Recovery

Understand and configure Spanning Tree BPDU Guard and automatic recovery of a disabled port. Guard against STP topology changes and rogue switches.
http://bit.ly/2dF32aq