H3C Technologies H3C S12500-X Series Switches - Manual (Page 8)

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Configuration procedure ······································································································································ 59
Verifying the configuration ··································································································································· 60
Configuring spanning tree protocols ························································································································ 61
STP ··················································································································································································· 61
STP protocol packets ············································································································································· 61
Basic concepts in STP ············································································································································ 62
Calculation process of the STP algorithm ··········································································································· 63
RSTP ················································································································································································· 68
MSTP ················································································································································································ 68
MSTP features ························································································································································ 68
MSTP basic concepts ············································································································································ 68
How MSTP works ·················································································································································· 72
MSTP implementation on devices ························································································································ 73
Protocols and standards ················································································································································ 73
Spanning tree configuration task lists ·························································································································· 73
STP configuration task list ····································································································································· 74
RSTP configuration task list ··································································································································· 74
MSTP configuration task list ································································································································· 75
Setting the spanning tree mode ···································································································································· 76
Configuring an MST region ·········································································································································· 77
Configuring the root bridge or a secondary root bridge ·························································································· 78
Configuring the current device as the root bridge of a specific spanning tree ·············································· 78
Configuring the current device as a secondary root bridge of a specific spanning tree ······························ 78
Configuring the device priority ····································································································································· 79
Configuring the maximum hops of an MST region ···································································································· 79
Configuring the network diameter of a switched network ························································································· 79
Configuring spanning tree timers ································································································································· 80
Configuration restrictions and guidelines ··········································································································· 80
Configuration procedure ······································································································································ 81
Configuring the timeout factor ······································································································································ 81
Configuring the BPDU transmission rate ······················································································································ 82
Configuring edge ports ················································································································································· 82
Configuration restrictions and guidelines ··········································································································· 82
Configuration procedure ······································································································································ 82
Configuring path costs of ports ···································································································································· 83
Specifying a standard for the device to use when it calculates the default path cost ··································· 83
Configuring path costs of ports ···························································································································· 84
Configuration example ········································································································································· 85
Configuring the port priority ········································································································································· 85
Configuring the port link type ······································································································································· 86
Configuration restrictions and guidelines ··········································································································· 86
Configuration procedure ······································································································································ 86
Configuring the mode a port uses to recognize and send MSTP packets ······························································· 86
Enabling outputting port state transition information ·································································································· 87
Enabling the spanning tree feature ······························································································································ 87
Performing mCheck ························································································································································ 88
Performing mCheck globally ································································································································ 88
Performing mCheck in interface view ················································································································· 88
Configuring Digest Snooping ······································································································································· 89
Configuration restrictions and guidelines ··········································································································· 89
Configuration procedure ······································································································································ 89
Digest Snooping configuration example ············································································································· 90
Configuring No Agreement Check ······························································································································ 91
Configuration prerequisites ·································································································································· 92