Cisco Catalyst 3750-E - Page 20

Contents
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Catalyst 3750-E and 3560-E Switch Software Configuration Guide
OL-9775-08
Detecting Unidirectional Link Failure 19-7
MSTP and Switch Stacks 19-8
Interoperability with IEEE 802.1D STP 19-8
Understanding RSTP 19-9
Port Roles and the Active Topology 19-9
Rapid Convergence 19-10
Synchronization of Port Roles 19-11
Bridge Protocol Data Unit Format and Processing 19-12
Processing Superior BPDU Information 19-13
Processing Inferior BPDU Information 19-13
Topology Changes 19-13
Configuring MSTP Features 19-14
Default MSTP Configuration 19-14
MSTP Configuration Guidelines 19-15
Specifying the MST Region Configuration and Enabling MSTP 19-16
Configuring the Root Switch 19-18
Configuring a Secondary Root Switch 19-19
Configuring Port Priority 19-20
Configuring Path Cost 19-21
Configuring the Switch Priority 19-22
Configuring the Hello Time 19-23
Configuring the Forwarding-Delay Time 19-24
Configuring the Maximum-Aging Time 19-24
Configuring the Maximum-Hop Count 19-25
Specifying the Link Type to Ensure Rapid Transitions 19-25
Designating the Neighbor Type 19-26
Restarting the Protocol Migration Process 19-26
Displaying the MST Configuration and Status 19-27
CHAPTER 20 Configuring Optional Spanning-Tree Features 20-1
Understanding Optional Spanning-Tree Features 20-1
Understanding Port Fast 20-2
Understanding BPDU Guard 20-2
Understanding BPDU Filtering 20-3
Understanding UplinkFast 20-3
Understanding Cross-Stack UplinkFast 20-5
How CSUF Works 20-6
Events that Cause Fast Convergence 20-7
Understanding BackboneFast 20-7