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4.6
VLAN
A Virtual LAN (VLAN) is a “logical” grouping of nodes for the purpose of limiting a
broadcast domain to specific members of a group without physically grouping the
members together. That means, VLAN allows you to isolate network traffic so
that only members of VLAN could receive traffic from the same VLAN members.
Basically, creating a VLAN from a switch is the logical equivalent of physically
reconnecting a group of network devices to another Layer 2 switch, without
actually disconnecting these devices from their original switches.
PMI Industrial Ethernet Switch supports 802.1Q VLAN. 802.1Q VLAN is also
known as Tag-Based VLAN. This Tag-Based VLAN allows VLAN to be created
across different switches. IEEE 802.1Q tag-based VLAN makes use of VLAN
control information stored in a VLAN header attached to IEEE 802.3 packet
frames. This tag contains a VLAN Identifier (VID) that indicates which VLAN a
frame belongs to. Since each switch only has to check a frame’s tag, without the
need to dissect the contents of the frame, this also saves a lot of computing
resources within the switch.
Summary of Contents for PMI-110-F2G
Page 1: ...1 PMI 110 F2G User s Manual Version 3 0 Industrial Managed PoE Switch ...
Page 5: ...1 5 2 Westermo Private MIB 234 5 3 Revision History 235 ...
Page 19: ...15 ...
Page 168: ...164 4 8 3 DSCP Queue Mapping 4 8 4 CLI Commands of the Traffic Prioritization ...
Page 193: ...189 ...
Page 234: ...230 Note No CLI command for this feature ...
Page 240: ...236 ...