Smc-networks SMC TigerAccess SMC7824M/FSW Instrukcja Użytkownika Pobierz pdf (Strona 259)

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101

12-1

HAPTER

VLAN C

ONFIGURATION

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).

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

1 2 ... 254 255 256 257 258 259 260 261 262 263 264 ... 747 748

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