Overview ························································································································································ 158

Methods of identifying IP phones ··················································································································· 158

Identifying IP phones through OUI addresses ······················································································· 158

Automatically identifying IP phones through LLDP ················································································ 159

Advertising the voice VLAN information to IP phones ··················································································· 159

IP phone access methods ······························································································································ 159

Connecting the host and the IP phone in series ···················································································· 159

Connecting the IP phone to the device ·································································································· 160

Voice VLAN assignment modes ···················································································································· 160

Automatic mode ····································································································································· 160

Manual mode ········································································································································· 161

Cooperation of voice VLAN assignment modes and IP phones ···························································· 161

Security mode and normal mode of voice VLANs ························································································· 162

Voice VLAN configuration task list ················································································································· 163

Configuring the QoS priority settings for voice traffic ····················································································· 163

Configuring a port to operate in automatic voice VLAN assignment mode ···················································· 164

Configuration restrictions and guidelines ······························································································· 164

Configuration procedure ························································································································· 164

Configuring a port to operate in manual voice VLAN assignment mode ······················································· 165

Configuration restrictions and guidelines ······························································································· 165

Configuration procedure ························································································································· 165

Enabling LLDP for automatic IP phone discovery ·························································································· 166

Configuration restrictions and guidelines ······························································································· 166

Configuration procedure ························································································································· 166

Configuring LLDP to advertise a voice VLAN ································································································ 166

Configuring CDP to advertise a voice VLAN ·································································································· 167

Displaying and maintaining voice VLANs ······································································································ 168

Voice VLAN configuration examples ·············································································································· 168

Automatic voice VLAN assignment mode configuration example ·························································· 168

Manual voice VLAN assignment mode configuration example ······························································ 170

Configuring MVRP ······················································································ 172

MRP ······························································································································································· 172

MRP implementation ······························································································································ 172

MRP messages ······································································································································ 172

MRP timers ············································································································································ 174

MVRP registration modes ······························································································································ 175

Protocols and standards ································································································································ 175

MVRP configuration task list ·························································································································· 175

Configuration restrictions and guidelines ······································································································· 175

Configuration prerequisites ···························································································································· 176

Enabling MVRP ·············································································································································· 176

Configuring an MVRP registration mode ······································································································· 176

Configuring MRP timers ································································································································· 177

Enabling GVRP compatibility ························································································································· 178

Displaying and maintaining MVRP ················································································································· 178

MVRP configuration example ························································································································ 178

Network requirements ···························································································································· 178

Configuration procedure ························································································································· 179

Verifying the configuration ······················································································································ 182

Configuring QinQ ························································································ 189

How QinQ works ···································································································································· 189

QinQ implementations ···························································································································· 190

Protocols and standards ························································································································ 190

Restrictions and guidelines ···························································································································· 191

Enabling QinQ ················································································································································ 191

Configuring transparent transmission for VLANs ··························································································· 191

Configuring the TPID for VLAN tags ·············································································································· 192