Vlans overview – Allied Telesis AT-2972T/2 User Manual
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AT-29xx Series Gigabit Ethernet Adapters Installation Guide
109
VLANs Overview
VLANs allow you to split your physical LAN into logical subparts, to create
logical segmentation of workgroups, and to enforce security policies
among each logical segment. Each defined VLAN behaves as its own
separate network, with its traffic and broadcasts isolated from the others,
increasing bandwidth efficiency within each logical group. Up to 64 VLANs
(63 tagged and 1 untagged) can be defined for each Allied Telesis Gigabit
Ethernet adapter on your server, depending on the amount of available
memory in your system. See Figure 14.
Although VLANs are commonly used to create individual broadcast
domains and/or separate IP subnets, it is sometimes useful for a server to
have a presence on more than one VLAN simultaneously. Allied Telesis
Gigabit Ethernet adapters support multiple VLANs on a per-port or per-
team basis, allowing very flexible network configurations.
Figure 14. Example of Servers Supporting Multiple VLANs with Tagging
Note
You can incorporate VLANs using the BACS utility, which is
available on the Allied Telesis website.
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AT-2931SX Adapter
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