This blog was originally started to better help me understand the technologies in the CCIE R&S blueprint; after completing the R&S track I have decided to transition the blog into a technology blog.

CCIE #29033

This blog will continue to include questions, troubleshooting scenarios, and references to existing and new technologies but will grow to include a variety of different platforms and technologies. Currently I have created over 185 questions/answers in regards to the CCIE R&S track!! Note: answers are in the comment field or within "Read More" section.

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Friday, April 30, 2010

Question 59

What are the spanning-tree phases?

2 comments:

Unknown said...

There are five main phases for spanning-tree.

1. Disabled
2. Listening
3. Learning
4. Forwarding
5. Blocking

Packets Analyzed said...

Blocking — interface does not forward frames.

Listening — After blocking, but does not forward frames.

Learning — After Listening, Learns mac addresses but does not forward frames.

Forwarding — After Learning, forwards frames.

•Disabled— not participating in spanning-tree, ports is shutdown or link is down.

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