VLAN C
ONFIGURATION
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VLANs help to simplify network management by allowing you to
move devices to a new VLAN without having to change any
physical connections. VLANs can be easily organized to reflect
departmental groups (such as Marketing or R&D), usage groups
(such as e-mail), or multicast groups (used for multimedia
applications such as videoconferencing).
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 VLA N features:
• Up to 127 VLANs based on the IEEE 802.1Q standard
• Distributed VLAN learning across multiple swi tches using
explicit or implicit tagging and GVRP prot ocol
• 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 participat e. 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