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Catalyst 3550 Multilayer Switch Software Configuration Guide
78-11194-03
Learning State 10-7
Forwarding State 10-8
Disabled State 10-8
STP Address Management 10-8
STP and IEEE 802.1Q Trunks 10-8
VLAN-Bridge STP 10-9
STP and Redundant Connectivity 10-9
Accelerated Aging to Retain Connectivity 10-10
Understanding Advanced STP Features 10-10
Understanding Port Fast 10-10
Understanding BPDU Guard 10-11
Understanding UplinkFast 10-12
Understanding Cross-Stack UplinkFast 10-13
How CSUF Works 10-14
Events that Cause Fast Convergence 10-15
Limitations 10-16
Connecting the Stack Ports 10-16
Understanding BackboneFast 10-18
Understanding Root Guard 10-20
Understanding EtherChannel Guard 10-20
Configuring Basic STP Features 10-21
Default STP Configuration 10-21
Disabling STP 10-22
Configuring the Root Switch 10-22
Configuring a Secondary Root Switch 10-24
Configuring STP Port Priority 10-26
Configuring STP Path Cost 10-27
Configuring the Switch Priority of a VLAN 10-28
Configuring the Hello Time 10-29
Configuring the Forwarding-Delay Time for a VLAN 10-29
Configuring the Maximum-Aging Time for a VLAN 10-30
Configuring STP for Use in a Cascaded Stack 10-30
Displaying STP Status 10-31
Configuring Advanced STP Features 10-32
Configuring Port Fast 10-32
Configuring BPDU Guard 10-33
Configuring UplinkFast for Use with Redundant Links 10-34
Configuring Cross-Stack UplinkFast 10-35
Configuring BackboneFast 10-36