7.12 VLAN
VLAN(Virtual LAN) is a method to restrict communication between switch ports.
At layer 2, the network is partioned into multiple, distinct, mutually isolated
broadcast domains.
This switch supports 802.1Q VLAN, Private VLAN, MAC-based VLAN,
Protocol-based VLAN, IP Subnet-based VLAN, and Voice VLAN for different
VLAN applications.
7.12.1 802.1Q VLAN
IEEE 802.1Q is the networking standard that supports Virtual LANs (VLANs) on
an Ethernet network. The standard defines a system of VLAN tagging for
Ethernet frames and the accompanying procedures to be used by bridges and
switches in handling such frames.
Portions of the network which are VLAN-aware (i.e., IEEE 802.1Q conformant)
can include VLAN tags. Traffic on a VLAN-unaware (i.e., IEEE 802.1D
conformant) portion of the network will not contain VLAN tags. When a frame
enters the VLAN-aware portion of the network, a tag is added to represent the
VLAN membership of the frame's port or the port/protocol combination,
depending on whether port-based or port-and-protocol-based VLAN
classification is being used. Each frame must be distinguishable as being within
exactly one VLAN. A frame in the VLAN-aware portion of the network that does
not contain a VLAN tag is assumed to be flowing on the native (or default)
VLAN.
Configuration by Web
:
[Configuration] -> [VLANs]
Click “
?
” at this web page to get details of the settings.
Configuration by Command
:
Add/Delete a VLAN :
(config)# vlan <vlan_list>
(config)# no vlan <vlan_list>
Ethertype for Custom S-ports :
(config)# vlan ethertype s-custom-port <0x0600-0xffff>
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