Understanding IEEE 802.1p Priority .....................................................................................................................................................114
VLAN Description......................................................................................................................................................................................114
Notes about VLANs on the DGS-3400 Series.......................................................................................................................................115
IEEE 802.1Q VLANs .................................................................................................................................................................................115
802.1Q VLAN Tags...............................................................................................................................................................................116
Port VLAN ID .......................................................................................................................................................................................117
Tagging and Untagging .........................................................................................................................................................................117
Ingress Filtering.....................................................................................................................................................................................118
Default VLANs......................................................................................................................................................................................118
Port-based VLANs.................................................................................................................................................................................118
VLAN Segmentation .............................................................................................................................................................................119
VLAN and Trunk Groups......................................................................................................................................................................119
Protocol VLANs....................................................................................................................................................................................119
Static VLAN Entry .....................................................................................................................................................................................119
GVRP Settings............................................................................................................................................................................................123
Double VLANs...........................................................................................................................................................................................124
Regulations for Double VLANs ............................................................................................................................................................125
Double VLAN.............................................................................................................................................................................................126
PVID Auto Assign ......................................................................................................................................................................................128
MAC-based VLAN Settings .......................................................................................................................................................................129
Trunking..................................................................................................................................................................................... 130
Understanding Port Trunk Groups.........................................................................................................................................................130
Link Aggregation........................................................................................................................................................................................131
LACP Port Settings.....................................................................................................................................................................................134
IGMP Snooping ......................................................................................................................................................................... 137
IGMP Snooping Settings ............................................................................................................................................................................137
Router Port Settings....................................................................................................................................................................................138
ISM VLAN .................................................................................................................................................................................................140
Restrictions and Provisos.......................................................................................................................................................................140
Limited Multicast Address Range...............................................................................................................................................................142
MLD Snooping .......................................................................................................................................................................... 144
MLD Control Messages.........................................................................................................................................................................144
MLD Snooping Settings..............................................................................................................................................................................144
MLD Router Port Settings ..........................................................................................................................................................................146
Loopback Detection Global Settings.......................................................................................................................................... 148
Spanning Tree............................................................................................................................................................................ 150
802.1s MSTP .........................................................................................................................................................................................150
802.1w Rapid Spanning Tree.................................................................................................................................................................150
Port Transition States.............................................................................................................................................................................150
Edge Port ...............................................................................................................................................................................................151
P2P Port.................................................................................................................................................................................................151
802.1D/802.1w/802.1s Compatibility....................................................................................................................................................151
STP Bridge Global Settings ........................................................................................................................................................................152
MST Configuration Identification...............................................................................................................................................................155
MSTP Port Information ..............................................................................................................................................................................157
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