GE MULTILINK 1601-9026-A3 - Manual (Page 46)

42 MULTILINK ETHERNET COMMUNICATIONS SWITCH – QUICKSTART GUIDE
QUICKSTART GUIDE
9 Tagged VLANs & Ring Only Mode
VLAN is short for "Virtual LAN." A VLAN creates separate network segments that can span
multiple Multilink switches. A VLAN is a group of ports designated by the switch as
belonging to the same broadcast domain. VLANs provide the capability of having multiple
networks co-existing on the same switch. Two advantages of VLANs are the separation of
traffic and security.
VLANs can be port based or tag based. Port based VLANs assigns a specific port or group
of ports to belong to a VLAN. When using tag based VLANs, a tag called a VLAN identifier is
sent as part of the message. This tag allows the message to move across multiple switches
whose ports are part of the same tagged VLAN.
Tagged VLANs and priority are used within IEC 61850 GOOSE messaging.
The objective of this exercise is to become familiar with the correct procedure to configure
tagged VLANs within the GE Multilink switches, to support the IEC61850 GOOSE peer to
peer messaging service.
9.0.1 Background:
The IEC 61850 Fixed GOOSE peer-to-peer communication service is an enhanced version
of IEC GSSE peer-to-peer service with the additional ability of assigning a priority and what
is called a "tag" to the multicast messages.
9.1 Configuring Tagged VLANs
FIGURE 15: Tagged Virtual LANs
VLAN 3
VLAN 2