routerjockey

Nexus 1000v – Out of Ports on a Virtual Switch?

Yesterday, work presented an interesting issue I wanted to share with everyone. While configuring a new virtual machine one of our systems engineers was presented with an issue he …

BGP Essentials – The Art of Path Manipulation

Most enterprise networks use BGP to peer with their Internet Service Providers if they want to be multi-homed. Many factors come into play when determining how traffic should flow, …

Introduction to the Nexus 1000V

The Nexus 1000V is a software-based Cisco NX-OS switch that integrates into VMware vSphere 4 and operates inside the VMware ESX hypervisor. With the 1000V your virtual servers have …

OSPF Graceful Shutdown

Striving to reach that last 9? Looking for a way to increase your uptime while still being able to do maintenance on your network? Wish you could shutdown your OSPF neighbors like …

ASA v8.4

Less than a year after changing the rules with ASA version 8.3, Cisco has released a new OS version 8.4. Since I won’t be covering the release notes word for word, you can find …

IOS Embedded Packet Capture

Tired of setting up SPAN sessions? Need to do some packet analysis? Since IOS 12.4(20)T Cisco has made