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Configuration procedure ···································································································································· 156
Dynamically advertising server-assigned VLANs through LLDP ··············································································· 157
Overview ······························································································································································ 157
Example for using 802.1X to authenticate IP phones ····················································································· 157
Displaying and maintaining voice VLAN ·················································································································· 157
Voice VLAN configuration examples ························································································································· 158
Automatic voice VLAN mode configuration example ····················································································· 158
Manual voice VLAN assignment mode configuration example ····································································· 160
Configuring GVRP ··················································································································································· 162
Overview ······································································································································································· 162
GARP ···································································································································································· 162
GVRP ····································································································································································· 165
Protocols and standards ····································································································································· 165
GVRP configuration task list ········································································································································ 165
Configuring GVRP functions ········································································································································ 166
Configuration restrictions and guidelines ········································································································· 166
Configuration procedure ···································································································································· 166
Configuring the GARP timers ······································································································································ 167
Displaying and maintaining GVRP ····························································································································· 168
GVRP configuration examples ···································································································································· 168
GVRP normal registration mode configuration example ················································································· 168
GVRP fixed registration mode configuration example ···················································································· 170
GVRP forbidden registration mode configuration example ············································································ 171
Configuring QinQ ··················································································································································· 174
Overview ······································································································································································· 174
Background and benefits ···································································································································· 174
How QinQ works ················································································································································ 174
QinQ frame structure ·········································································································································· 175
Implementations of QinQ ··································································································································· 176
Modifying the TPID in a VLAN tag ···················································································································· 176
Protocols and standards ····································································································································· 177
QinQ configuration task list ········································································································································ 177
Configuring basic QinQ ············································································································································· 178
Enabling basic QinQ ·········································································································································· 178
Configuring VLAN transparent transmission ···································································································· 178
Configuring selective QinQ ········································································································································ 179
Configuring an outer VLAN tagging policy ····································································································· 179
Configuring an inner-outer VLAN 802.1p priority mapping ·········································································· 180
Configuring the TPID value in VLAN tags ·················································································································· 181
QinQ configuration examples ···································································································································· 181
Basic QinQ configuration example ··················································································································· 181
Selective QinQ configuration example ············································································································· 184
Configuring LLDP ····················································································································································· 187
Overview ······································································································································································· 187
Background ·························································································································································· 187
Basic concepts ····················································································································································· 187
How LLDP works ·················································································································································· 191
Protocols and standards ····································································································································· 192
LLDP configuration task list ·········································································································································· 192
Performing basic LLDP configuration ·························································································································· 192
Enabling LLDP ······················································································································································ 192
Setting the LLDP operating mode ······················································································································· 193
Setting the LLDP re-initialization delay ·············································································································· 193
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