Owner's Manual

240 | Chapter 9. VLANs
NETGEAR 8800 User Manual
• Ethernet, LLC SAP, or LLC/SNAP Ethernet protocol type
• A combination of these criteria
Port-Based VLANs
In a port-based VLAN, a VLAN name is given to a group of one or more ports on the switch.
At boot-up, all ports are members of the port-based VLAN default. Before you can add any
port to another port-based VLAN, you must remove it from the default VLAN, unless the new
VLAN uses a protocol other than the default protocol any. A port can be a member of only
one port-based VLAN.
On the NETGEAR switch in Figure 6, ports 9 through 14 are part of VLAN Marketing; ports
25 through 29 are part of VLAN Sales; and ports 21 through 24 and 30 through 32 are in
VLAN Finance.
Figure 6. Example of a Port-Based VLAN on an NETGEAR Switch
For the members of different IP VLANs to communicate, the traffic must be routed by the
switch, even if the VLANs are physically part of the same I/O module. This means that each
VLAN must be configured as a router interface with a unique IP address.
Spanning Switches with Port-Based VLANs
To create a port-based VLAN that spans two switches, you must do two things:
1. Assign the port on each switch to the VLAN.
2. Cable the two switches together using one port on each switch per VLAN.
Figure 7 illustrates a single VLAN that spans a BlackDiamond switch and another NETGEAR
switch. All ports on the system 1 switch belong to VLAN Sales. Ports 1 through 29 on the
system 2 switch also belong to VLAN Sales. The two switches are connected using slot 8,
port 4 on system 1 (the BlackDiamond switch), and port 29 on system 2 (the other switch).
EX_060
Sales
Finance
Marketing