GE -DSH-73 User Manual page 89

This page includes the following fields:
Object
Enable GVRP Protocol:
Management VLAN ID:
Link Type:
Untagged VID:
GE-DSH-73/DSH-82 and DSH-82-PoE User Manual
Description
GVRP (GARP VLAN Registration Protocol) 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. For example, having enabled GVRP on two switches, they
are able to automatically exchange the information of their VLAN
database. Therefore, the user doesn't need to manually configure
whether the link is trunk or hybrid, the packets belonging to the same
VLAN can communicate across switches. Tick this checkbox to enable
GVRP protocol. This checkbox is available while the VLAN Operation
Mode is in 802.1Q mode.
Only when the VLAN members, whose Untagged VID (PVID) equals to the
value in this column, will have the permission to access the switch. The
default value is '0' that means this limit is not enabled (all members in
different VLANs can access this switch).
There are 3 types of link type.
Access Link:
A segment which 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). After an untagged
frame gets into the access port, the switch will insert a four-byte tag in
the frame. The contents of the last 12-bit of the tag is untagged VID.
When this frame is sent out through any of the access port of the same
PVID, the switch will remove the tag from the frame to recover it to what
it was. Those ports of the same untagged VID are regarded as the same
VLAN group members.
Trunk Link:
A segment which provides the link path for one or more VLAN-aware
devices (switches). A Trunk Port, connected to the trunk link, has an
understanding of tagged frame, which is used for the communication
among VLANs across switches. Which frames of the specified VIDs will
be forwarded depends on the values filled in the Tagged VID column
field. Please insert a comma between two VIDs.
Hybrid Link:
A segment which consists of Access and Trunk links. The hybrid port has
both the features of access and trunk ports. A hybrid port has a PVID
belonging to a particular VLAN, and it also forwards the specified
tagged-frames for the purpose of VLAN communication across
switches.
This column field is available when Link Type is set as Access Link and
Hybrid Link. Assign a number in the range between 1 an 4094.
Chapter 5: Web-Based Management
85