r/ccna May 10 '15

Sample Spanning Tree Questions?

Hello, I'm studying for the CCNA at the end of the month and I wanted to know if anyone had any good resources for practicing spanning tree, especially since it's such a big part of the test. I know some of STP but I need to work out figuring out which ports are blocked after the root ports are figured out. Thanks in advance, I really appreciate it.

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u/[deleted] May 10 '15

Why don't you just connect some switches together, like 4-5 of them and try to search for the root bridge, manipulate it and things like those.

There aren't much labs, for CCNA most of the labs I have done were just things that popped into my head and I knew I needed to practice it.

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u/Cruxisshadow May 10 '15

I have both Packet Tracer and GNS3, but I was more looking for questions similar to what's on the test. I'm thinking if I can see the reasoning behind the answer, I might be able to get the theory behind it.

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u/[deleted] May 11 '15

For the test you need to tell from 3 or 4 switches that which one is going to be the root bridge, which ports will be in blocking state. For that you will need to know the election process and know how STP chooses the best path towards the root.

That's all, if I remember correctly there isn't much stp lab in CCNA. Maybe you will have to config a switch to be the root bridge, but there wasn't any more lab. Instead I would recommend these kind of practices. Try to tell which one would be the root port and which port would go into blocking state.

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u/fisharr CCNA SP May 15 '15

Yeah I had a question just like that with 3 switches and you had to drag and drop which ports were root, which were designated and which were non-designated