Web Management Guide-R04

Table Of Contents
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5 VLAN Configuration
This chapter includes the following topics:
IEEE 802.1Q VLANs – Configures static and dynamic VLANs.
IEEE 802.1Q Tunneling – Configures QinQ tunneling to maintain customer-
specific VLAN and Layer 2 protocol configurations across a service provider
network, even when different customers use the same internal VLAN IDs.
L2PT Tunneling – Configures Layer 2 Protocol Tunneling for the specified
protocol.
Protocol VLANs
8
– Configures VLAN groups based on specified protocols.
IP Subnet VLANs
8
– Maps untagged ingress frames to a specified VLAN if the
source address is found in the IP subnet-to-VLAN mapping table.
MAC-based VLANs
8
– Maps untagged ingress frames to a specified VLAN if the
source MAC address is found in the IP MAC address-to-VLAN mapping table.
VLAN Translation – Maps VLAN IDs between the customer and the service
provider.
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
8. If a packet matches the rules defined by more than one of these functions, only one of them is
applied, with the precedence being MAC-based, IP subnet-based, protocol-based, and then
native port-based.