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Cooper Bussmann 5073E-T Managed Ethernet Switch User Manual
59
Rev Version 1.1
802.1Q VLAN Mode—
If you choose 802.1Q VLAN mode (Figure 62), you can see the link type, untagged VID, and
tagged VID information of each port.
Figure 62 VLAN Configuration - 802.1Q VLAN
Operation Mode
Select the VLAN operation mode, or disable VLAN. The following fields appear when
you choose 802.1Q VLAN mode.
GVRP mode
GARP VLAN Registration Protocol or Generic VLAN Registration Protocol (GVRP) is
a protocol that facilitates control of virtual local area networks (VLANs) within a larger
network. GVRP conforms to the IEEE 802.1Q specification, which defines a method
of tagging frames with VLAN configuration data. This allows network devices to
dynamically exchange VLAN configuration information with other devices.
Management LAN ID
Set the VLAN group that can access the switch (only ports with this VLAN ID can
access the switch). The default “0” means devices on all ports can access the switch.
Link Type
There are four link types to choose from:
•
Access Link
—This link type only supports untagged VID. The access link is a
segment that provides the link path for one or more stations to the VLAN-aware
device. An access port (untagged port), connected to the access link, has an
untagged VID (also called PVID). When an untagged frame is received by the
access port, the switch inserts a four-byte tag into the frame. The contents of
the last 12-bits of the tag is untagged VID. When this frame is sent out through
any of the access ports of the same PVID, the switch will remove the tag from
the frame to restore it to what it was. Ports with the same untagged VID are
regarded as members of the same VLAN group.
NOTE Because the access port does understand a tagged frame, the column
field of Tagged VID is not available.
