Contents
xiv
Cisco IE 3000 Switch Software Configuration Guide
OL-13018-01
CHAPTER
15 Configuring Voice VLAN 15-1
Understanding Voice VLAN 15-1
Cisco IP Phone Voice Traffic 15-2
Cisco IP Phone Data Traffic 15-2
Configuring Voice VLAN 15-3
Default Voice VLAN Configuration 15-3
Voice VLAN Configuration Guidelines 15-3
Configuring a Port Connected to a Cisco 7960 IP Phone 15-4
Configuring Cisco IP Phone Voice Traffic 15-5
Configuring the Priority of Incoming Data Frames 15-6
Displaying Voice VLAN 15-6
CHAPTER
16 Configuring STP 16-1
Understanding Spanning-Tree Features 16-1
STP Overview 16-2
Spanning-Tree Topology and BPDUs 16-3
Bridge ID, Switch Priority, and Extended System ID 16-4
Spanning-Tree Interface States 16-4
Blocking State 16-6
Listening State 16-6
Learning State 16-6
Forwarding State 16-6
Disabled State 16-7
How a Switch or Port Becomes the Root Switch or Root Port 16-7
Spanning Tree and Redundant Connectivity 16-8
Spanning-Tree Address Management 16-8
Accelerated Aging to Retain Connectivity 16-8
Spanning-Tree Modes and Protocols 16-9
Supported Spanning-Tree Instances 16-9
Spanning-Tree Interoperability and Backward Compatibility 16-10
STP and IEEE 802.1Q Trunks 16-10
Configuring Spanning-Tree Features 16-10
Default Spanning-Tree Configuration 16-11
Spanning-Tree Configuration Guidelines 16-12
Changing the Spanning-Tree Mode. 16-13
Disabling Spanning Tree 16-14
Configuring the Root Switch 16-14
Configuring a Secondary Root Switch 16-16
Configuring Port Priority 16-16