
AT-GS950/48 Web Interface User Guide
161
A tagged VLAN consists of the following:
“VLAN Index”
“VLAN Name”
“Tagged and Untagged Ports”
“Port VLAN Identifier (PVID)” on page 162
“General Rules for Creating a Tagged VLAN” on page 162
VLAN Index
You must assign a unique number to each tagged VLAN in a network. This
number is called the tagged VLAN ID. This number uniquely identifies a
tagged VLAN in the AT-GS950/48 switch and across the network.
VLAN Name
To create a tagged VLAN, you must give it a unique name. This name can
reflect the function of the network devices that are VLAN members, such
as Sales, Production, and Engineering.
Tagged and Untagged Ports
When you specify that a port is a member of a tagged VLAN, you need to
specify that it is tagged or untagged. By definition, the port is a static
member of a tagged VLAN when it is configured as either a tagged or
untagged port. You can have a combination of tagged and untagged ports
in the same VLAN.
Note
A port can also be dynamically assigned to a tagged VLAN within a
voice VLAN configuration which is a special configuration of a
tagged VLAN. For more information concerning static and dynamic
membership in a tagged VLAN, see “Overview” on page 274 in the
“Voice VLAN” chapter.
Packet transmission from a tagged port differs from packet transmission
from an untagged port. When a packet is transmitted from a tagged port,
the tagged information within the packet is maintained when it is
transmitted to the next network device. If the packet is transmitted from an
untagged port, the VLAN tag information is removed from the packet
before it is transmitted to the next network device.
The IEEE 802.1Q standard describes how tagging information within a
packet is used to forward or discard traffic throughout the switch. If the
incoming packet has a VLAN tag that matches one of the Group IDs of
which the port is a member, the packet is accepted and forwarded to the
appropriate port(s) within that VLAN. If the incoming packet’s VLAN tag
Содержание AT-GS950/48
Страница 10: ...Contents 10...
Страница 14: ...Figures 14...
Страница 16: ...List of Tables 16...
Страница 20: ...Preface 20...
Страница 22: ...22...
Страница 62: ...Chapter 2 System Configuration 62...
Страница 64: ...64...
Страница 108: ...Chapter 6 Static Port Trunking 108...
Страница 124: ...Chapter 8 Port Mirroring 124...
Страница 186: ...Chapter 13 Virtual LANs 186...
Страница 194: ...Chapter 14 GVRP 194...
Страница 210: ...210...
Страница 224: ...Chapter 16 SNMPv1 and v2c 224...
Страница 242: ...Chapter 17 SNMPv3 242...
Страница 258: ...Chapter 18 Access Control Configuration 258...
Страница 272: ...Chapter 19 RMON 272...
Страница 302: ...Chapter 21 Security 302...
Страница 324: ...Chapter 23 LLDP 324...
Страница 338: ...338...
Страница 356: ...Chapter 27 LED ECO Mode 356...
Страница 360: ...Chapter 28 Energy Efficient Ethernet 360...
Страница 370: ...Chapter 29 Rebooting the AT GS950 48 370...
Страница 392: ...Appendix A MSTP Overview 392...