ii
Configuring a port to operate in manual voice VLAN assignment mode ································································ 39
Configuration restrictions and guidelines ··········································································································· 39
Configuration procedure ······································································································································ 39
Displaying and maintaining voice VLAN ···················································································································· 40
Voice VLAN configuration examples ··························································································································· 40
Automatic voice VLAN mode configuration example ······················································································· 40
Manual voice VLAN assignment mode configuration example ······································································· 42
Configuring the MAC address table ························································································································ 45
Overview ········································································································································································· 45
How a MAC address table entry is created ······································································································· 45
Types of MAC address table entries ··················································································································· 46
MAC address table-based frame forwarding ···································································································· 46
Configuring static, dynamic, and blackhole MAC address table entries ································································ 46
Adding or modifying a static, dynamic, or blackhole MAC address table entry in system view ················ 47
Adding or modifying a static or dynamic MAC address table entry in interface view ································· 47
Configuring a multiport unicast MAC address table entry ························································································ 47
Configuring a multiport unicast MAC address table entry in system view ····················································· 48
Configuring a multiport unicast MAC address table entry in interface view ·················································· 48
Configuring the aging timer for dynamic MAC address entries ··············································································· 49
Configuration restrictions and guidelines ··········································································································· 49
Configuration procedure ······································································································································ 49
Configuring the MAC learning limit ····························································································································· 49
Configuring the MAC learning limit on ports ····································································································· 49
Configuring the MAC learning limit on a VLAN ································································································ 50
Enabling MAC address migration log notifying ········································································································· 50
Displaying and maintaining the MAC address table ································································································· 51
MAC address table configuration example ················································································································ 51
Network requirements ··········································································································································· 52
Configuration procedure ······································································································································ 52
Configuring spanning tree protocols ························································································································ 54
STP ··················································································································································································· 54
STP protocol packets ············································································································································· 54
Basic concepts in STP ············································································································································ 55
Calculation process of the STP algorithm ··········································································································· 56
RSTP ················································································································································································· 61
PVST ················································································································································································· 61
MSTP ················································································································································································ 62
STP, RSTP, and PVST limitations ·························································································································· 62
MSTP features ························································································································································ 62
MSTP basic concepts ············································································································································ 62
How MSTP works ·················································································································································· 66
Implementation of MSTP on devices ···················································································································· 67
Protocols and standards ················································································································································ 67
Spanning tree configuration task lists ·························································································································· 67
Configuration restrictions and guidelines ··········································································································· 67
STP configuration task list ····································································································································· 68
RSTP configuration task list ··································································································································· 68
PVST configuration task list··································································································································· 69
MSTP configuration task list ································································································································· 70
Setting the spanning tree mode ···································································································································· 72
Configuring an MST region ·········································································································································· 72
Configuration restrictions and guidelines ··········································································································· 72
Configuration procedure ······································································································································ 72
