L2 Features; Vlan; Vlan Description; Notes About Vlans On The Dgs-3400 Series - D-Link xStack DGS-3400 Series Reference Manual
Web ui reference guide for layer 2+ managed gigabit ethernet switch
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Also See for xStack DGS-3400 Series:
- Reference manual (629 pages) ,
- Cli reference manual (540 pages) ,
- Cli manual (463 pages)
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L2 Features
VLAN
Trunking
IGMP Snooping
MLD Snooping
Loop-back Detection Global Settings
Spanning Tree
Forwarding & Filtering
LLDP
Q-in-Q
ERPS
DULD Settings
NLB Multicast FDB Settings
The following section will aid the user in configuring security functions for the Switch. The Switch includes various functions for
VLAN, Trunking, IGMP Snooping, MLD Snooping, Loopback Detection Global Settings, Spanning Tree, Forwarding &
Filtering, LLDP and Q-in-Q all discussed in detail in the following section.
VLAN
VLAN Description
A Virtual Local Area Network (VLAN) is a network topology configured according to a logical scheme rather than the physical
layout. VLANs can be used to combine any collection of LAN segments into an autonomous user group that appears as a single
LAN. VLANs also logically segment the network into different broadcast domains so that packets are forwarded only between
ports within the VLAN. Typically, a VLAN corresponds to a particular subnet, although not necessarily.
VLANs can enhance performance by conserving bandwidth, and improve security by limiting traffic to specific domains.
A VLAN is a collection of end nodes grouped by logic instead of physical location. End nodes that frequently communicate with
each other are assigned to the same VLAN, regardless of where they are physically on the network. Logically, a VLAN can be
equated to a broadcast domain, because broadcast packets are forwarded to only members of the VLAN on which the broadcast
was initiated.
Notes about VLANs on the DGS-3400 Series
No matter what basis is used to uniquely identify end nodes and assign these nodes VLAN membership, packets cannot cross
VLANs without a network device performing a routing function between the VLANs.
®
The xStack
DGS-3400 Series supports IEEE 802.1Q VLANs and Port-based VLANs. The port untagging function can be used to
remove the 802.1Q tag from packet headers to maintain compatibility with devices that are tag-unaware.
The Switch's default is to assign all ports to a single 802.1Q VLAN named "default."
The "default" VLAN has a VID = 1.
The member ports of Port-based VLANs may overlap, if desired.
®
DGS-3400 Series Layer 2 Gigabit Ethernet M anaged Sw itch
151
Section 3
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