Chapter 9
Spanning Tree Protocol Concepts
This chapter covers the following exam topics:
2.0 Network Access
2.4 Configure and verify (Layer 2/Layer 3) EtherChannel (LACP)
2.5 Interpret basic operations of Rapid PVST+ Spanning Tree Protocol
2.5.a Root port, root bridge (primary/secondary), and other port names
2.5.b Port states and roles
2.5.c PortFast
2.5.d Root Guard, loop guard, BPDU filter, and BPDU guard
Spanning Tree Protocol (STP) allows Ethernet LANs to have redundant links in a LAN while overcoming the known problems that occur when adding those extra links. Using redundant links in a LAN design allows the LAN to keep working even when some links fail or even when some entire switches fail. Proper LAN design should add enough redundancy ...
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