CIS 26B Module 5

2. a loop-prevention network protocol
5. port closest to the root bridge
7. enabled, by default
8. All ports on the root bridge are
9. STP prevents loops from occurring
10. a switch port transitions to this state after the listening state
13. switch with the lowest BID will become
15. port transitions from blocking to forwarding state immediately
16. immediately puts the switch port in an errdisabled state upon receipt of any BPDU
18. responsible for calculating and maintaining a loop-free logical topology
20. discarding or blocking state to prevent loops
24. root bridge elected for each spanning tree instance
26. IEEE 802.1D standard
27. a switch port is considered part of the active topology
29. The default is 2 seconds

1. switch does not have the destination MAC address
3. A bridge priority of 0
4. limits the number of times a Layer 3 networking device can retransmit a packet
6. high number of broadcasts overwhelming the network
9. decimal value 32768
11. Cisco switches running IOS 15.0 or later
12. Link Failure Causes
14. "brain" of the STP network
17. IEEE-802.1w
19. invented STP
21. time that a switch waits before attempting to change the STP topology
22. used to elect the root bridge, root ports, designated ports
23. evolution of STP that provides faster convergence than STP
25. the time that is spent in the listening and learning state
28. identifies which switch sent the BPDU