NSH-566 Modularized 24 (100Base-FX) + 2G Access Switch

Modularized 24+2G Switch
802.1q Tag-VLAN Application Example
Appendix B
An IEEE 802.1q VLAN is a group of ports that can be located anywhere in
the network, but communicate as though they belong to the same
physical segment. 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
video conferencing).
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. Figure 1 demonstrates a VLAN example with
two switches and four VLAN groups. Below are details and configuration
steps.
Figure 1. 802.1q Tag-VLAN example
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