BCMSN Exam Cram™ 2 (Exam Cram 642-811)

Chapter 5. Enhancements to STP

Terms you'll need to understand:

• PortFast, UplinkFast, and BackboneFast

• BPDU Guard and filtering

• Rapid STP (RSTP)

• Alternate and backup port states for RSTP

• Edge port and link type

• Multiple Spanning Tree (MST) and regions

• Internal Spanning Tree (IST)

• EtherChannel

• Port Aggregation Protocol (PAgP) and Link Aggregation Control Protocol (LACP)

• BPDU skewing, Root Guard, Unidirectional Link Detection (UDLD), and Loop Guard

Techniques you'll need to master:

• Enabling PortFast, UplinkFast, and BackboneFast

• Using RSTP to scale Layer 2 networks

• Understand the differences between CST, PVST, and MST

• Configuring MST

• Understand the EtherChannel operation and configuration

• Understand when to use Root Guard, UDLD, and Loop Guard to prevent STP ...