spannig tree
DESCRIPTION
TRANSCRIPT
![Page 1: Spannig tree](https://reader036.vdocument.in/reader036/viewer/2022062614/546c9635b4af9f8e2c8b520c/html5/thumbnails/1.jpg)
www.ciscopress.comCopyright 2003
CCNA 3 Chapter 8
Spanning Tree Protocol
By
Your Name
![Page 2: Spannig tree](https://reader036.vdocument.in/reader036/viewer/2022062614/546c9635b4af9f8e2c8b520c/html5/thumbnails/2.jpg)
www.ciscopress.comCopyright 2003
Objectives
• Redundant topologies
• Spanning Tree Protocol
![Page 3: Spannig tree](https://reader036.vdocument.in/reader036/viewer/2022062614/546c9635b4af9f8e2c8b520c/html5/thumbnails/3.jpg)
www.ciscopress.comCopyright 2003
RedundancyRedundant networking topologies are designed to ensure that networks continue to function in the presence of single points of failure.
![Page 4: Spannig tree](https://reader036.vdocument.in/reader036/viewer/2022062614/546c9635b4af9f8e2c8b520c/html5/thumbnails/4.jpg)
www.ciscopress.comCopyright 2003
Redundant Topologies
• A goal of redundant topologies is to eliminate network outages caused by a single point of failure.
• All networks need redundancy for enhanced reliability.
![Page 5: Spannig tree](https://reader036.vdocument.in/reader036/viewer/2022062614/546c9635b4af9f8e2c8b520c/html5/thumbnails/5.jpg)
www.ciscopress.comCopyright 2003
Redundant Switched Topologies
![Page 6: Spannig tree](https://reader036.vdocument.in/reader036/viewer/2022062614/546c9635b4af9f8e2c8b520c/html5/thumbnails/6.jpg)
www.ciscopress.comCopyright 2003
Broadcast Storms
![Page 7: Spannig tree](https://reader036.vdocument.in/reader036/viewer/2022062614/546c9635b4af9f8e2c8b520c/html5/thumbnails/7.jpg)
www.ciscopress.comCopyright 2003
Multiple Frames Transmission
![Page 8: Spannig tree](https://reader036.vdocument.in/reader036/viewer/2022062614/546c9635b4af9f8e2c8b520c/html5/thumbnails/8.jpg)
www.ciscopress.comCopyright 2003
MAC Database Instability
In a redundant switched network, it is possible for switches to learn the wrong information. A switch can learn that a MAC address is on a port when it is not.
![Page 9: Spannig tree](https://reader036.vdocument.in/reader036/viewer/2022062614/546c9635b4af9f8e2c8b520c/html5/thumbnails/9.jpg)
www.ciscopress.comCopyright 2003
Spanning Tree Protocol
![Page 10: Spannig tree](https://reader036.vdocument.in/reader036/viewer/2022062614/546c9635b4af9f8e2c8b520c/html5/thumbnails/10.jpg)
www.ciscopress.comCopyright 2003
Bridging Loops for Redundancy
![Page 11: Spannig tree](https://reader036.vdocument.in/reader036/viewer/2022062614/546c9635b4af9f8e2c8b520c/html5/thumbnails/11.jpg)
www.ciscopress.comCopyright 2003
Spanning Tree
![Page 12: Spannig tree](https://reader036.vdocument.in/reader036/viewer/2022062614/546c9635b4af9f8e2c8b520c/html5/thumbnails/12.jpg)
www.ciscopress.comCopyright 2003
Spanning-Tree Costs
![Page 13: Spannig tree](https://reader036.vdocument.in/reader036/viewer/2022062614/546c9635b4af9f8e2c8b520c/html5/thumbnails/13.jpg)
www.ciscopress.comCopyright 2003
Spanning-Tree Operation
• One root bridge per network.
• One root port per nonroot bridge.
• One designated port per segment.
• Nondesignated ports are unused.
![Page 14: Spannig tree](https://reader036.vdocument.in/reader036/viewer/2022062614/546c9635b4af9f8e2c8b520c/html5/thumbnails/14.jpg)
www.ciscopress.comCopyright 2003
Selecting the Root BridgeBridge protocol data unit (BPDU)
![Page 15: Spannig tree](https://reader036.vdocument.in/reader036/viewer/2022062614/546c9635b4af9f8e2c8b520c/html5/thumbnails/15.jpg)
www.ciscopress.comCopyright 2003
Spanning-Tree Port States
![Page 16: Spannig tree](https://reader036.vdocument.in/reader036/viewer/2022062614/546c9635b4af9f8e2c8b520c/html5/thumbnails/16.jpg)
www.ciscopress.comCopyright 2003
Spanning-Tree Recalculation
A switched internetwork has converged when all the switch and bridge ports are in either the forwarding or blocked state.
![Page 17: Spannig tree](https://reader036.vdocument.in/reader036/viewer/2022062614/546c9635b4af9f8e2c8b520c/html5/thumbnails/17.jpg)
www.ciscopress.comCopyright 2003
Rapid Spanning Tree Protocol
• Clarification of port states and roles
• Definition of a set of link types that can go to forwarding state rapidly
• Allowing switches, in a converged network, to generate their own BPDUs rather than relaying root bridge BPDUs
The Rapid Spanning Tree Protocol, IEEE 802.1w, will eventually replace the Spanning Tree Protocol, IEEE 802.1D.