Recently a posted a question to Twitter about connecting two Cisco Catalyst switches. One switch has already booted and has the following configuration: The other switch is connected to Gi1/0/48 and has just been powered on. It has no configuration
Introduction This post is inspired by a post at IEOC about Uplinkfast and TCN which can be found here. Before we get to those parts, let’s recap how Ethernet and STP work together. Spanning Tree The Spanning Tree Algorithm builds
Time to bust another myth! Supposedly PAgP runs in silent mode by default in both desirable and auto mode. So what does silent mode do? “Use the silent mode when the switch is connected to a device that is not
RSTP synchronization is not widely understood and often oversimplified. This post describes how it really works in detail to give you the full picture.
The Catalyst 2960 is a very common switch in any environment that has Cisco devices. A couple of years ago the 2960 got stacking via the 2960-S model. It also got the ability to do static routes which was a
To be a CCIE we need a good grasp of switching and STP. This post by Petr Lapukhov (again) is one of the best I’ve ever seen on STP. This post describes PVST+ in detail. Read it here.
Sorry for the lack of updates lately but I spent the whole last week skiing and recharging my batteries and now I’m back fully motivated to continue my path to the lab. This time we will be talking about Integrated
Private VLANs is a method to segment devices at layer 2 that are in the same IP network. Different VLANs are used but they share a common IP network. The most common scenario for a private VLAN is a residential