v

VLAN interface configuration example ············································································································· 116

Configuring port-based VLANs ··································································································································· 118

Introduction to port-based VLAN ······················································································································· 118

Assigning an access port to a VLAN ················································································································ 119

Assigning a trunk port to a VLAN······················································································································ 120

Assigning a hybrid port to a VLAN ··················································································································· 121

Port-based VLAN configuration example ·········································································································· 122

Configuring MAC-based VLANs ································································································································ 124

Introduction to MAC-based VLAN ····················································································································· 124

Configuration restrictions and guidelines ········································································································· 126

Configuration procedure ···································································································································· 126

MAC-based VLAN configuration example ······································································································· 129

Configuring protocol-based VLANs ··························································································································· 131

Introduction to protocol-based VLAN ················································································································ 131

Configuration restrictions and guidelines ········································································································· 131

Configuration procedure ···································································································································· 132

Protocol-based VLAN configuration example ··································································································· 133

Configuring IP subnet-based VLANs ·························································································································· 135

Configuration procedure ···································································································································· 135

IP subnet-based VLAN configuration example ································································································· 136

Displaying and maintaining VLAN ···························································································································· 138

Configuring an isolate-user-VLAN ·························································································································· 140

Overview ······································································································································································· 140

Configuration restrictions and guidelines ·················································································································· 141

Configuration procedure ············································································································································· 141

Displaying and maintaining isolate-user-VLAN ········································································································· 142

Isolate-user-VLAN configuration example ·················································································································· 143

Network requirements ········································································································································· 143

Configuration procedure ···································································································································· 143

Verifying the configuration ································································································································· 144

Configuring a voice VLAN ····································································································································· 146

Overview ······································································································································································· 146

Methods of identifying IP phones ······························································································································· 146

OUI addresses ····················································································································································· 146

Automatically identifying IP phones through LLDP ··························································································· 147

Configuring a device to advertise voice VLAN information to IP phones ······························································ 147

How a device advertises voice VLAN information ·························································································· 147

How a device obtains voice VLAN information ······························································································· 147

IP phone access methods ············································································································································ 148

Connecting the host and the IP phone in series ······························································································· 148

Connecting the IP phone to the device separately ·························································································· 148

Configuring a voice VLAN on a port ························································································································· 148

Voice VLAN assignment modes ························································································································· 148

Security mode and normal mode of voice VLANs ··························································································· 150

Configuration prerequisites ································································································································ 151

Configuring QoS priority settings for voice traffic on an interface ································································ 151

Configuring a port to operate in automatic voice VLAN assignment mode ················································· 152

Configuring a port to operate in manual voice VLAN assignment mode ····················································· 153

Enabling LLDP to automatically discover IP phones ·································································································· 154

Configuration prerequisites ································································································································ 154

Configuration procedure ···································································································································· 155

Configuring LLDP to advertise a specific voice VLAN ······························································································ 155

Configuration guidelines ···································································································································· 155