Spanning Tree Protocol 1
Terms
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- What is the Spanning Tree Protocol (STP) used for?
- to eliminate loops on Layer 2 networks
- How does STP learn about switch links?
- it monitors all switch ports
- How does STP respond to secondary links?
- it disables them until needed
- What piece of hardware is used to determine network topology?
- a root bridge
- How many root bridges can a network have?
- only one
- What are ports on a root bridge called?
- designated ports
- What state do designated ports operate in?
- forwarding state- they are able to send and receive traffic
- What do non-root bridges use to assess links?
- the Spanning Tree Algorithm (STA)
- What criteria does STA use to determine the cost of a link?
- the bandwidth of each hop
- What can you do if you disagree with the cost of a link?
- assign a cost manually
- What is a "root port"?
- the port on a non-root bridge with the lowest cost to the root bridge
- What port sends and receives traffic on a non-root bridge?
- the root port
- What is another name for a root port?
- a designated port
- What mode do root ports operate in?
- forwarding mode
- What is forwarding mode?
- a mode where a port can send and receive traffic
- What are non-root ports on non-root bridges considered?
- nondesignated- they neither send nor receive traffic
- What mode are nondesignated ports in?
- blocking mode- they neither send nor receive traffic