Contents
22
Software Configuration GuideāRelease IOS XE 3.9.xE and IOS 15.2(5)Ex
Enabling Per-VLAN Rapid Spanning Tree 23-20
Specifying the Link Type 23-21
Restarting Protocol Migration 23-21
About MST 23-22
IEEE 802.1s MST 23-22
IEEE 802.1w RSTP 23-23
RSTP Port Roles 23-24
RSTP Port States 23-24
MST-to-SST Interoperability 23-24
Common Spanning Tree 23-25
MST Instances 23-26
MST Configuration Parameters 23-26
MST Regions 23-26
MST Region Overview 23-26
Boundary Ports 23-27
IST Master 23-27
Edge Ports 23-27
Link Type 23-28
Message Age and Hop Count 23-28
MST Configuration Restrictions and Guidelines 23-28
Configuring MST 23-28
Enabling MST 23-29
Configuring MST Instance Parameters 23-30
Configuring MST Instance Port Parameters 23-31
Restarting Protocol Migration 23-32
Displaying MST Configurations 23-32
About MST-to-PVST+ Interoperability (PVST+ Simulation) 23-35
Configuring PVST+ Simulation 23-36
About Detecting Unidirectional Link Failure 23-40
Configuring Flex Links and MAC Address-Table Move Update 24-1
About Flex Links 24-1
Flex Links 24-1
VLAN Flex Links Load Balancing and Support 24-2
Flex Links Failover Actions 24-3
MAC Address-Table Move Update 24-3
Configuring Flex Links 24-5
Default Configuration 24-5
Configuration Guidelines 24-5