Cisco Catalyst 3550 Series - Configuring VLAN Trunks; CHAPTER 16 Configuring STP; Enabling BPDU Filtering; Configuring MVR

Contents
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Catalyst 3550 Multilayer Switch Software Configuration Guide
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Specifying the Link Type to Ensure Rapid Transitions 17-22
Restarting the Protocol Migration Process 17-22
Displaying the MST Configuration and Status 17-23
CHAPTER 18 Configuring Optional Spanning-Tree Features 18-1
Understanding Optional Spanning-Tree Features 18-1
Understanding Port Fast 18-2
Understanding BPDU Guard 18-3
Understanding BPDU Filtering 18-3
Understanding UplinkFast 18-4
Understanding Cross-Stack UplinkFast 18-5
How CSUF Works 18-6
Events that Cause Fast Convergence 18-7
Limitations 18-8
Connecting the Stack Ports 18-8
Understanding BackboneFast 18-10
Understanding EtherChannel Guard 18-12
Understanding Root Guard 18-12
Understanding Loop Guard 18-13
Configuring Optional Spanning-Tree Features 18-14
Default Optional Spanning-Tree Configuration 18-14
Optional Spanning-Tree Configuration Guidelines 18-14
Enabling Port Fast 18-14
Enabling BPDU Guard 18-15
Enabling BPDU Filtering 18-16
Enabling UplinkFast for Use with Redundant Links 18-17
Enabling Cross-Stack UplinkFast 18-19
Enabling BackboneFast 18-20
Enabling EtherChannel Guard 18-20
Enabling Root Guard 18-21
Enabling Loop Guard 18-21
Displaying the Spanning-Tree Status 18-22
CHAPTER 19 Configuring DHCP Features 19-1
Understanding DHCP Features 19-1
DHCP Snooping 19-1
Option-82 Data Insertion 19-2
Configuring DHCP Features 19-3
Default DHCP Configuration 19-3