Westermo U200 Operator manal - Manual (Page 30)

V4.5
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U/R/T200 series
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11 VLAN
A physical Ethernet network can be divided into several overlapping Virtual LANs (VLAN)
without having IEEE802.1q tagging or GVRP (Generic VLAN Registration Protocol) support
on the Ethernet end nodes. All Ethernet trunk ports are member of all of the seven “Standard
VLANs” and the four “Additional VLANs”. A trunk port means a switch port connected to
another switch; where a network redundancy protocol is running (e.g. FRNT). This means
that the VLAN tables on each switch are dynamically updated during a network topology
change. Thus, no VLAN user configuration is required on the trunk ports.
Figure 12, VLAN setup dialog