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Root Bridge vs. Designated Switch? http://forum.gns3.net/topic7701.html |
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Author: | Router47 [ Tue Nov 19, 2013 11:27 pm ] |
Post subject: | Root Bridge vs. Designated Switch? |
I know what the Root Bridge is but my study material has also been talking about something called a "Designated Switch" for a given LAN...that's DIFFERENT from the Root Bridge? What is this? |
Author: | rednectar [ Wed Nov 20, 2013 12:16 am ] |
Post subject: | Re: Root Bridge vs. Designated Switch? |
You need to learn about Spanning Tree - https://en.wikipedia.org/wiki/Spanning_Tree_Protocol might be a good start, but it is a bit dry Here is Spanning Tree in a nutshell
Build yourself a topology in GNS3 using 3 RouterSwitch devices. Connect them in a triangle making sure you use ports 1/x (the switch ports) and not ports 0/x (the router ports) and explore the spanning tree in action. At the same time, draw a diagram of what you have and follow the BPDUs, marking DESIGNATED_PORTS, ROOT_PORTS and ALTERNATE_PORTS (Blocking) as you go. |
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