iv
Configuring the mode a port uses to recognize/send MSTP packets ······································································ 85
Enabling outputting port state transition information ·································································································· 86
Enabling the spanning tree feature ······························································································································ 87
Configuration restrictions and guidelines ··········································································································· 87
Enabling the spanning tree feature (in STP/RSTP/MSTP mode) ······································································ 87
Enabling the spanning tree feature (in PVST mode) ·························································································· 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
Configuration procedure ······································································································································ 92
No Agreement Check configuration example···································································································· 93
Configuring TC snooping ·············································································································································· 93
Configuration restrictions and guidelines ··········································································································· 94
Configuration procedure ······································································································································ 94
Configuring protection functions ·································································································································· 94
Configuration prerequisites ·································································································································· 94
Enabling BPDU guard ··········································································································································· 94
Enabling root guard ·············································································································································· 95
Enabling loop guard ············································································································································· 96
Enabling TC-BPDU guard······································································································································ 97
Enabling BPDU drop ············································································································································· 97
Displaying and maintaining the spanning tree ··········································································································· 98
Spanning tree configuration examples ························································································································ 98
MSTP configuration example ······························································································································· 98
PVST configuration example ······························································································································ 102
Configuring BPDU tunneling ··································································································································· 106
Overview ······································································································································································· 106
Background ·························································································································································· 106
BPDU tunneling implementation ························································································································· 107
Enabling BPDU tunneling ············································································································································ 108
Configuration prerequisites ································································································································ 108
Configuration restrictions and guidelines ········································································································· 109
Configuration procedure ···································································································································· 109
Configuring destination multicast MAC address for BPDUs ···················································································· 109
BPDU tunneling configuration examples ···················································································································· 110
BPDU tunneling for STP configuration example ······························································································· 110
BPDU tunneling for PVST configuration example ····························································································· 111
Configuring VLANs ················································································································································· 113
Overview ······································································································································································· 113
VLAN fundamentals············································································································································· 113
VLAN types ·························································································································································· 114
Protocols and standards ····································································································································· 115
Configuring basic VLAN settings································································································································ 115
Configuration restrictions and guidelines ········································································································· 115
Configuration procedure ···································································································································· 115
Configuring basic settings of a VLAN interface ······································································································· 116
Configuration procedure ···································································································································· 116
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