MSTP features ························································································································································ 66
MSTP basic concepts ············································································································································ 66
How MSTP works ·················································································································································· 70
Protocols and standards ················································································································································ 71
Configuring the spanning tree ······································································································································ 76
Setting the spanning tree mode ··························································································································· 76
Configuring an MST region ································································································································· 76
Configuring the device priority ···························································································································· 78
Configuring the timeout factor ····························································································································· 81
Configuring edge ports ········································································································································· 82
Configuring path costs of ports ···························································································································· 83
Configuring the port priority ································································································································ 85
Configuring the port link type ······························································································································ 86
Performing mCheck ··············································································································································· 89
Configuring Digest Snooping ······························································································································· 89
Configuring No Agreement Check······················································································································ 92
Configuring TC snooping ····································································································································· 94
MSTP configuration example ······························································································································· 99
PVST configuration example ······························································································································ 103
BPDU tunneling configuration ································································································································ 107
Introduction to BPDU tunneling ··································································································································· 107
Background ·························································································································································· 107
BPDU tunneling implementation ························································································································· 108
Configuring BPDU tunneling ······································································································································· 109
Configuration prerequisites ································································································································ 109
Enabling BPDU tunneling ···································································································································· 110
VLAN configuration ················································································································································ 114
Overview ······································································································································································· 114
VLAN ···································································································································································· 114
VLAN fundamentals············································································································································· 114
VLAN types ·························································································································································· 115
Protocols and standards ····································································································································· 116
Configuring basic VLAN settings································································································································ 116
VLAN interface overview ···································································································································· 117
Configuration procedure ···································································································································· 117
iii