DCICN 1.0: Redundant Switched Topology

Datacenter network engineers and learners embarking on a network administration or engineering career who wish to expand their skills in datacenter networks


Expected Duration
91 minutes

Most datacenter networks include redundant devices to avoid single points of failure. Although a redundant topology eliminates some problems, it can introduce other problems. Spanning Tree Protocol (STP) is a Layer 2 link management protocol that provides path redundancy while preventing undesirable loops in a switched network. This course identifies the problems that are caused by redundant switched-network topologies and the functionality of STP to prevent these problems. In this course, you’ll learn about situations in which spanning tree is used and then implement it on the network. This course is one of a series in the Skillsoft learning path that covers the objectives for Cisco exam 640-911: Introducing Cisco Datacenter Networking.


Building a Redundant Topology

  • start the course
  • identify the potential issues of a redundant switched topology
  • describe how multiple frame transmissions can cause problems
  • describe the issues that can occur with MAC database instability
  • describe how STP provides loop resolution
  • describe the function of the root bridge in the STP topology
  • identify the purpose of the extended function ID
  • describe root bridge selection
  • match the link speed to its default spanning-tree path cost
  • match the port role to its description

Spanning Tree Protocol

  • describe the Spanning Tree Protocol
  • identify the different Spanning Tree Protocols
  • match the port type to its description
  • describe the function of the 802.1w BPDU
  • describe the STP tuning options available
  • describe 802.1s MSTP
  • compare PVST and MSTP
  • describe the function LAN port channels
  • describe LAN port channel operation
  • verify a LAN port channel

Practice: Implementing Redundant Switched Topology

  • implement a redundant switched topology using the Spanning Tree Protocol





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