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- IEEE 802.1d examples
- ====================
- These examples show the STP/RSTP capability of the Ethernet switch.
- STP and RSTP are network protocols that ensure a loop-free topology for any
- bridged Ethernet local area network. The basic function of STP/RSTP is
- to prevent bridge loops and the broadcast radiation that results from them.
- The protocols achieve this goal by disabling certain links to turn the
- topology in to a tree. The time needed by STP to make the topology
- loop-free is nearly 50s, while RSTP only needs 6s.
- The example network contains a network with several loops in it.
- After the STP/RSTP has done its job, the spanning tree and the root switch
- highlighted with light blue.
- Switch1RootByMAC
- ----------------
- The example shows without any configuration how Switch1 chosen to be the root, because it has the lowest MAC address.
- Also you can check how the shortest path will be chosen. Switch2 will route his traffic through Switch4 instead of Switch7,
- because it has shorter path to the root.
- Switch3RootByPriority
- ---------------------
- Now Switch3 will be the root because it has the lowest priority number.
- Switch7to4BySrcPriority
- -----------------------
- Switch7 will route his traffic through Switch4 instead of Switch3. They have the same long path, but Switch4 has better priority.
- LargeNet
- --------
- This example shows, how traffic runs through the network.
- Also Switch4 disappears at 60s and reappears at 120s, so you can check how the tree will rebuild itself.
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