HP 8000M User Manual
Page 128
6-52
Configuring the Switch
Port-Based Virtual LANs (VLANs)
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Figure 6-35. Example of Routing Between VLANs via an External Router
Overlapping (Tagged) VLANs.
A port on the Switches 1600M/2424M/
4000M/8000M can be a member of more than one VLAN if the device to which
they are connected complies with the 802.1Q VLAN standard. For example, a
port connected to a central server using a network interface card (NIC) that
complies with the 802.1Q standard can be a member of multiple VLANs,
allowing members of multiple VLANs to use the server. Although these VLANs
cannot communicate with each other through the server, they can all access
the server over the same connection from the switch. Where VLANs overlap
in this way, VLAN “tags” are used to distinguish between traffic from different
VLANs.
Figure 6-36. Example of Overlapping VLANs Using the Same Server
External
Router
VLAN_2
VLAN_1
Port 1
Port 8
Port 2
Port 3
Port 4
Port 5
Port 6
Port 7
Switch with Two
VLANs Configured