Cisco Catalyst Blade Switch 3020 for HP Software Configuration Guide, Rel. 12.2(25)SEF1

Contents
xiii
Cisco Catalyst Blade Switch 3020 for HP Software Configuration Guide
OL-8915-01
CHAPTER 13 Configuring STP 13-1
Understanding Spanning-Tree Features 13-1
STP Overview 13-2
Spanning-Tree Topology and BPDUs 13-3
Bridge ID, Switch Priority, and Extended System ID 13-4
Spanning-Tree Interface States 13-4
Blocking State 13-6
Listening State 13-6
Learning State 13-6
Forwarding State 13-6
Disabled State 13-7
How a Switch or Port Becomes the Root Switch or Root Port 13-7
Spanning Tree and Redundant Connectivity 13-8
Spanning-Tree Address Management 13-8
Accelerated Aging to Retain Connectivity 13-8
Spanning-Tree Modes and Protocols 13-9
Supported Spanning-Tree Instances 13-9
Spanning-Tree Interoperability and Backward Compatibility 13-10
STP and IEEE 802.1Q Trunks 13-10
Configuring Spanning-Tree Features 13-10
Default Spanning-Tree Configuration 13-11
Spanning-Tree Configuration Guidelines 13-12
Changing the Spanning-Tree Mode. 13-13
Disabling Spanning Tree 13-14
Configuring the Root Switch 13-14
Configuring a Secondary Root Switch 13-16
Configuring Port Priority 13-16
Configuring Path Cost 13-18
Configuring the Switch Priority of a VLAN 13-19
Configuring Spanning-Tree Timers 13-20
Configuring the Hello Time 13-20
Configuring the Forwarding-Delay Time for a VLAN 13-21
Configuring the Maximum-Aging Time for a VLAN 13-21
Configuring the Transmit Hold-Count 13-22
Displaying the Spanning-Tree Status 13-22