3Com 4.2.2 manual Configuring IP, Subnet-based Vlan

4-32CHAPTER 4: NETWORK CONFIGURATION TASKS

This removes the device from the policy.

Once a device or port is put into a policy, all open/unused ports are automatically placed into the default VLAN. You will notice a message on the NMS screen saying that VLAN move has taken place.

Verify that Automatic VLAN Auto-configuration is Activated.

1Move the PC from the port on the SuperStack II Switch 2700 to another open port on another SuperStack II 2700 (or another port on the same 2700) or SuperStack II 1000 (the destination device must also be assigned to the policy) and generate a few pings.

A message is displayed that the VLAN move completed successfully.

2Open the front panel view of the device and then check the VLAN colors. The port on the device where the PC is connected is now configured into the VLAN that its MAC address was mapped to. This VLAN configuration change may take a few seconds to be reflected in VLAN maps.

Configuring IP	This section describes the IP Subnet-based VLAN auto-configuration
Subnet-based VLAN	policy. If an endstation IP subnet address is pre-mapped to a VLAN, then
Auto-configuration	the edge devices configured for this policy will automatically configure
	the correct VLAN on the port that this station attaches based on the
	endstation’s IP Subnet Address.
	How Does IP Subnet-based VLAN Auto-configuration Compare to
	DHCP?
	When DHCP is enabled in the network, roving endstations can
	automatically query for and get an IP address and network access
	dynamically. The access to the network may not be optimal as the
	endstation is configured into the subnet of the building or location. Its
	services may be in another subnet or building. With IP Subnet-based
	VLANs, roving endstations can maintain their IP address and
	VLAN/Subnet and get optimal performance connectivity (layer 2
	connectivity) to their services (file services, print services).