VLAN Configuration

12.8.2 Switch Without VLANs

When the switch is powered up, the switch uses its default settings to switch frames like an 802.1Q switch. In this default configuration, all ports are a member of the default VLAN (VLAN 1) including the virtual Host Data Port of the switch, so any port can be used to manage the device as shown in Figure 12-3.

Figure 12-3 Switch Management with Only Default VLAN

802.1Q Switch

1

2

3

Host

Data

Port

4

5

6

NOTE: All ports, including the virtual Host Data Port, are members of the default VLAN. Therefore, any station shown may be used as the management station.

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12.8.3 Switch with VLANs

If the switch is to be configured for multiple VLANs, it may be desirable to configure a management-only VLAN. This allows a management station connected to the management VLAN to manage all ports on the switch and make management secure by preventing management via ports assigned to other VLANs.

NOTE: The switch’s virtual Host Data Port, like any other port, has VLAN membership that is configurable. For manageability of the device to be maintained, this port must be a member of the same VLAN as the port to which the management station is connected.

Figure 12-4shows an example of a switch configured with port 1 on the Management VLAN port and the other users belonging to VLANs A, B, and C.

12-12VLAN Operation and Network Applications

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Enterasys Networks 2E253, 2H253, 2H252, 2H258 manual Switch Without VLANs, Switch with VLANs