Sun Microsystems Gigabit Ethernet MMF/UTP Adapter - Manual (Page 92)

58 Sun PCI-Express Dual Gigabit Ethernet MMF/UTP Adapter Installation and User’s Guide • June 2006
Although VLANs are commonly used to create individual broadcast domains
and/or separate IP subnets, it can be 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.
FIGURE 5-1 shows an example network that uses VLANs.
FIGURE 5-1 Example of Servers Supporting Multiple VLANs With Tagging Adapters
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 different VLANs, each representing a different
IP subnet.
■ VLAN 1 is an IP subnet consisting of the Main Server, Client 3, and Client 5. This
represents an engineering group.
Software
PC 1
(VLAN 2)
VLAN 1
VLAN 2
VLAN 3
Software
PC 2
(VLAN 2)
Accounting
Server
(VLAN 3)
Main Server
Adapter
Gigabit/Tagged
(All VLANs)
Engineering
PC 3
(VLAN 1) Accounting
PC 4
(VLAN 3) Engineering/
Software PC 5
Adapter
Gigabit/Tagged
(VLAN 1 & 2)
Shared
Media
Segment