Configuring SNMP trap function·····························································································································125

SNMP configuration example ·······································································································································127

Interface statistics ···················································································································································· 133

Overview ·········································································································································································133

Displaying interface statistics·········································································································································133

VLAN configuration ················································································································································ 135

Introduction to VLAN ················································································································································135

VLAN fundamentals··················································································································································135

VLAN types································································································································································136

Introduction to port-based VLAN·····························································································································137

Configuring a VLAN·······················································································································································138

Configuration task list···············································································································································138

Creating VLANs ························································································································································138

Selecting VLANs························································································································································139

Modifying a VLAN····················································································································································140

Modifying ports·························································································································································142

VLAN configuration example ········································································································································143

Configuration guidelines················································································································································148

VLAN interface configuration································································································································· 149

Configuring VLAN interfaces·········································································································································149

Configuration task list···············································································································································149

Creating a VLAN interface ······································································································································149

Modifying a VLAN interface····································································································································150

Voice VLAN configuration······································································································································ 153

OUI addresses···························································································································································153

Voice VLAN assignment modes ······························································································································153

Security mode and normal mode of voice VLANs ································································································155

Configuring the voice VLAN··········································································································································155

Configuration task list···············································································································································155

Configuring voice VLAN globally ···························································································································157

Configuring voice VLAN on a port·························································································································157

Adding OUI addresses to the OUI list····················································································································159

Voice VLAN configuration examples····························································································································160

Configuring voice VLAN on a port in automatic voice VLAN assignment mode ··············································160 Configuring a voice VLAN on a port in manual voice VLAN assignment mode···············································165

Configuration guidelines················································································································································171

MAC address configuration··································································································································· 172

Configuring MAC addresses·········································································································································173

Configuring a MAC address entry ·························································································································173

Setting the aging time of MAC address entries·····································································································175

MAC address configuration example···························································································································176

MSTP configuration················································································································································· 177

STP177

STP protocol packets ················································································································································177

Basic concepts in STP ···············································································································································177

How STP works ·························································································································································178

RSTP··················································································································································································184

MSTP ················································································································································································185

STP and RSTP limitations ··········································································································································185

MSTP features····························································································································································185

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