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Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide
OL-10101-02
Using Rate Selection to Automatically Assign Profiles 12-14
Precedence 12-15
Profile Locking 12-15
Link Qualification and SNR Margins 12-16
Configuring LRE Link Persistence 12-19
Configuring LRE Link Monitor 12-19
Configuring LRE Interleave 12-19
Configuring Upstream Power Back-Off 12-20
Configuring CPE Toggle 12-21
Configuring Syslog Export 12-22
Upgrading LRE Switch Firmware 12-23
Configuring for an LRE Upgrade 12-23
Performing an LRE Upgrade 12-24
Global Configuration of LRE Upgrades 12-24
Controller Configuration of LRE Upgrades 12-24
LRE Upgrade Details 12-25
LRE Upgrade Example 12-26
Displaying LRE Status 12-27
CHAPTER
13 Configuring STP 13-1
Understanding Spanning-Tree Features 13-1
STP Overview 13-2
Spanning-Tree Topology and BPDUs 13-2
Bridge ID, Switch Priority, and Extended System ID 13-3
Spanning-Tree Interface States 13-4
Blocking State 13-5
Listening State 13-6
Learning State 13-6
Forwarding State 13-6
Disabled State 13-6
How a Switch or Port Becomes the Root Switch or Root Port 13-7
Spanning Tree and Redundant Connectivity 13-7
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