Asus GigaX2024SX - Manual (Page 129)

VLAN Configuration
IEEE 802.1Q VLANs
In large networks, routers are used to isolate broadcast traffic for each subnet into
switch provides a similar service at Layer 2 by using
group of network nodes into separate broadcast domains.
t traffic to the originating group, and can eliminate
This also provides a more secure and cleaner
ocated anywhere in the
ame physical segment.
hysical connections. VLANs can be
e sily organized to refle s Marketing or R&D),
VLANs provide greater network efficiency by reducing broadcast traffic, and allow
you to make network changes without having to update IP addresses or IP
subnets.VLANs inherently provide a high level of network security since traffic
must pass through a configured Layer 3 link to reach a different VLAN.
This switch supports the following VLAN features:
• Up to 255 VLANs based on the IEEE 802.1Q standard
• Distributed VLAN learning across multiple switches using explicit or implicit
tagging and GVRP protocol
• Port overlapping, allowing a port to participate in multiple VLANs
• End stations can belong to multiple VLANs
• Passing traffic between VLAN-aware and VLAN-unaware devices
• Priority tagging
Assigning Ports to VLANs
Before enabling VLANs for the switch, you must first assign each port to the VLAN
group(s) in which it will participate. By default all ports are assigned to VLAN 1 as
untagged ports. Add a port as a tagged port if you want it to carry traffic for one or
more VLANs, and any intermediate network devices or the host at the other end
of the connection supports VLANs. Then assign ports on the other VLAN-aware
network devices along the path that will carry this traffic to the same VLAN(s),
either manually or dynamically using GVRP. However, if you want a port on this
switch to participate in one or more VLANs, but none of the intermediate network
devices nor the host at the other end of the connection supports VLANs, then you
separate domains. This
VLANs to organize any
VLANs confine broadcas
broadcast storms in large networks.
network environment.
An IEEE 802.1Q VLAN is a group of ports that can be l
etwork, but communicate as though they belong to the s n
VLANs help to simplify network management by allowing you to move devices to
a ew VLAN without having to change any p
n
a
ct departmental groups (such a
usage groups (such as e-mail), or multicast groups (used for multimedia
ferencing). applications such as videocon
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