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List of supplementary learning sources usable for "642-813 SWITCH - Implementing Cisco IP Switched Networks


Virtual LAN (VLAN)


Virtual Trunking Protocol (VTP)

Private VLAN


Chapter 3 STP

Spanning Tree Protocol (STP)

STP features

Configuring STP

 Rapid STP

  • Document ID: 24062: Understanding Rapid Spanning Tree Protocol (802.1w)
    • The 802.1D Spanning Tree Protocol (STP) standard was designed at a time when the recovery of connectivity after an outage within a minute or so was considered adequate performance. With the advent of Layer 3 switching in LAN environments, bridging now competes with routed solutions where protocols, such as Open Shortest Path First (OSPF) and Enhanced Interior Gateway Routing Protocol (EIGRP), are able to provide an alternate path in less time.

Multiple STP

  • Document ID: 24248: Understanding Multiple Spanning Tree Protocol (802.1s)
    • Multiple Spanning Tree (MST) is an IEEE standard inspired from the Cisco proprietary Multiple Instances Spanning Tree Protocol (MISTP) implementation. This document assumes that the reader is familiar with Rapid STP (RSTP) (802.1w), as MST heavily relies on this other IEEE standard.
  • MSTP Tutorial Part I: Inside a Region
    • Before we begin with MSTP (Multiple Spanning Trees Protocol), I would like to note that this tutorial is going to be is divided in two parts. The first part describes how MSTP works inside a single region (the definition of the term will follow later). The second part is dedicated to MSTP region interaction with other regions and different STP protocols (IEEE STP, RSTP and Cisco PVST+).
  • MSTP Tutorial Part II: Outside a Region
    • This post continues the previous article dedicated to MSTP operations inside a single region. Before reading any further, make sure you read and fully understand the first part of MSTP overview: MSTP Tutorial Part I: Inside a Region. The information there is critical to understand the new post.

 Chapter XY Securing L2

Monitoring SPAN and RSPAN


Chapter 5: Implementing high availability in a Campus Environments



Chapter 6: Securing ...

Blocking port




show tech -> Output Interpreter