SMC Networks TigerAccess SMC7816M - Manual (Page 332)

VLAN C
ONFIGURATION
13-2
Web – Click VLAN, System Mode. Select the required mode, click Apply.
Figure 13-1 Selecting the System Mode
CLI – This example sets the switch to operate in QinQ mode.
IEEE 802.1Q VLANs
In large networks, routers are used to isolate broadcast traffic for each
subnet into separate domains. This switch provides a similar service at
Layer 2 by using VLANs to organize any group of network nodes into
separate broadcast domains. VLANs confine broadcast traffic to the
originating group, and can eliminate broadcast storms in large networks.
This also provides a more secure and cleaner network environment.
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
videoconferencing).
Console(config)#system mode qinq 20-13
Console(config)#