PLANET ISW-1022MPT - Manual (Page 87)

User’s Manual of ISW-1022M Series and ISW-1033MT
87
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.
Management VLAN ID:
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).
Link Type :
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.
Untagged VID:
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.
Tagged VID:
This column field is available when Link Type is set as Trunk Link and Hybrid
Link. Assign a number in the range between 1 an 4094.