Simple definition
A protocol that avoids Ethernet loops between Interswitches.
Technical definition
Spanning Tree Protocol builds a logical topology without loop by blocking some redundant paths, and then can reactivate them when a main link falls.
What is it used for ?
Keep red data between Inters without causing a storm of,82.
Practical example
Two switch links linked by multiple links can use STP to prevent a level 2 loop.
Common issues
- Network loop
- R.A. Bridge wrongly chosen
- Ports that change frequently in state
Related terms
Key takeaway: This entry explains the general operation of the term. Exact settings may vary depending on software, vendors and environments.