Advanced Control Suite User’s Guide
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 Telesyn Gigabit Ethernet adapter in your server, depending on the amount of available memory in your system.
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. The adapters support multiple VLANs on a
VLAN 1
VLAN 2
Accounting | Main Server |
Server | (All VLANs) |
| |
| VLAN Tagged |
VLAN 3
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Shared Media Segment
PC 1 | PC 2 | PC 3 | PC 4 | PC 5 |
Software Dept. | Software Dept. | Engineering | Accounting | Engineering/Software |
Figure 34. Example of Servers Supporting Multiple VLANs with Tagging
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