64 Sun GigaSwift Ethernet Adapter Installation and User’s Guide • February 2003
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.Several Sun products support multiple VLANs on a
per port or per interface basis, allowing very flexible network configurations.
FIGURE5-1 shows an example network that uses VLANs
.
FIGURE5-1 Example of Servers Supporting Multiple VLANs with TaggingAdapters
The example network has the following features:
■The physical LAN network consists of a switch, two servers, and five clients.
■The LAN is logically organized into three differentVLANs, each representing a
different IP subnet.
■VLAN1 is an IP subnet consisting of the Main Server, Client 3, and Client 5. This
represents an engineering group.
■VLAN2 includes the Main Server, Clients 1 and 2 via shared media segment, and
Client 5. This is a software development group.
■VLAN3 includes the Main Server, the Accounting Server and Client 4. This is an
accounting group.
VLAN 1
VLAN 2
VLAN 3
Accounting
Server
(VLAN 3)
Main Server
Adapter
Gigabit/Tagged
(All VLANs)
Shared Media Segment
Engineering/
Software PC 5
Adapter
Gigabit/Tagged
(VLAN 1 & 2)
Accounting
PC 4
(VLAN 3)
Engineering
PC 3
(VLAN 1)
Software
PC 2
(VLAN 2)
Software
PC 1
(VLAN 2)
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10/100 Base - TX Gigabit Ethernet