What is a Bpdu and what is its purpose?

Related questions

1. What is STP and how it works?
2. What is the difference between STP RSTP MSTP?
3. What is configuration Bpdu?
4. Is Rstp Cisco proprietary?
5. What is Loop Guard?
6. What is the size of the VLAN field inside an 802.1 Q frame?
7. What is Hello time STP?
8. What is Uplinkfast?
9. What is the use of Bpdu filter?
10. How does a Bpdu Guard work?

Tags

1. #spanning
2. #addresses
3. #across
4. #bpdus
5. #within
6. #bridge
7. #switches
8. #messages
9. #where
10. #priorities
11. #extended
12. #ensure
13. #packets
14. #protocol
15. #topology
16. #costs
17. #intended
18. #contain
19. #exchanged
20. #information
21. #acronym
22. #ports