STP Flashcards
What are the basic functions of switch?
Filtering
Forwarding
Flooding
Blocking
What is STP?
Spanning Tree Protocol
Where does a Layer 2 loop occur?
When there a fault tolerant (parallel) links between switches
What does STP do?
Identifies parallel paths within a network and blocks one or more ports
What is the ROOT in STP?
The administrative Switch/Bridge
How does STP work?
ROOT Switch forwards on all ports BPDUs, servant devices than receive more than one BDPU will block a parallel port
What standards are associated with STP?
- 1d - STP
802. 1w - Rapid STP
When would a switch block?
STP to prevent L2 loop
When would a switch flood?
When it has no entry for the L2 destination address
When would a switch filter?
When it knows the L2 source and destination address and will send it just that address on a VLAN
When would a switch forward?
When not in a blocking state
What is BPDU?
Bridge Protocol Data Unit
What would you use to manage a switch remotely?
VLAN Interface (L3)
What would you use to directly manage a switch?
Console port
What is a VTY (Virtual Terminal)?
Used when remotely connecting to a switch or router
