H3C Technologies H3C S5120 Series Switches User Manual
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Table of Contents
1 MSTP Configuration ··································································································································1-1
Overview ·················································································································································1-1
Introduction to STP ·································································································································1-1
Why STP ·········································································································································1-1
Protocol Packets of STP··················································································································1-1
Basic Concepts in STP····················································································································1-2
How STP works ·······························································································································1-3
Introduction to RSTP·······························································································································1-9
Introduction to MSTP ······························································································································1-9
Why MSTP ······································································································································1-9
Basic Concepts in MSTP···············································································································1-10
How MSTP Works ·························································································································1-14
Implementation of MSTP on Devices ····························································································1-14
Protocols and Standards ···············································································································1-15
MSTP Configuration Task List ··············································································································1-15
Configuring MSTP·································································································································1-16
Configuring an MST Region ··········································································································1-16
Configuring the Root Bridge or a Secondary Root Bridge ····························································1-17
Configuring the Work Mode of an MSTP Device ··········································································1-18
Configuring the Priority of a Device·······························································································1-19
Configuring the Maximum Hops of an MST Region······································································1-19
Configuring the Network Diameter of a Switched Network ···························································1-20
Configuring Timers of MSTP ·········································································································1-20
Configuring the Timeout Factor·····································································································1-22
Configuring the Maximum Port Rate ·····························································································1-22
Configuring Ports as Edge Ports ···································································································1-23
Configuring Path Costs of Ports ····································································································1-23
Configuring Port Priority ················································································································1-26
Configuring the Link Type of Ports ································································································1-26
Configuring the Mode a Port Uses to Recognize/Send MSTP Packets········································1-27
Enabling the Output of Port State Transition Information······························································1-28
Enabling the MSTP Feature ··········································································································1-28
Performing mCheck·······················································································································1-29
Configuring the VLAN Ignore Feature···································································································1-30
Configuration Procedure················································································································1-30
Configuration Example ··················································································································1-30
Configuring Digest Snooping·········································································································1-31
Configuring No Agreement Check·································································································1-33
Configuring Protection Functions ··································································································1-35
Displaying and Maintaining MSTP ········································································································1-38
MSTP Configuration Example···············································································································1-39