Contents
xvi
Catalyst 3750 Switch Software Configuration Guide
78-16180-02
Understanding RSTP 18-6
Port Roles and the Active Topology 18-7
Rapid Convergence 18-8
Synchronization of Port Roles 18-9
Bridge Protocol Data Unit Format and Processing 18-10
Processing Superior BPDU Information 18-11
Processing Inferior BPDU Information 18-11
Topology Changes 18-11
Configuring MSTP Features 18-12
Default MSTP Configuration 18-13
MSTP Configuration Guidelines 18-13
Specifying the MST Region Configuration and Enabling MSTP 18-14
Configuring the Root Switch 18-15
Configuring a Secondary Root Switch 18-17
Configuring Port Priority 18-18
Configuring Path Cost 18-19
Configuring the Switch Priority 18-20
Configuring the Hello Time 18-20
Configuring the Forwarding-Delay Time 18-21
Configuring the Maximum-Aging Time 18-22
Configuring the Maximum-Hop Count 18-22
Specifying the Link Type to Ensure Rapid Transitions 18-23
Restarting the Protocol Migration Process 18-23
Displaying the MST Configuration and Status 18-24
CHAPTER
19 Configuring Optional Spanning-Tree Features 19-1
Understanding Optional Spanning-Tree Features 19-1
Understanding Port Fast 19-2
Understanding BPDU Guard 19-3
Understanding BPDU Filtering 19-3
Understanding UplinkFast 19-4
Understanding Cross-Stack UplinkFast 19-5
How CSUF Works 19-6
Events that Cause Fast Convergence 19-7
Understanding BackboneFast 19-7
Understanding EtherChannel Guard 19-10
Understanding Root Guard 19-10
Understanding Loop Guard 19-11
Configuring Optional Spanning-Tree Features 19-11
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