3Com 4200G, 5500G, 4210 manual Protocol-Based Vlan, Precautions, Be disconnected

		Configuring Protocol-Based VLAN 23
	#
	interface Ethernet1/0/11
	port access vlan 101
	#
	interface Ethernet1/0/12
	port access vlan 201
Precautions	■ After you assign the servers and the workstations to different VLANs, they
	cannot communicate with each other. For them to communicate, you need to
	configure a Layer 3 VLAN interface for each of them on the switches.
	■ After you telnet to an Ethernet port on a switch to make configuration, do not
	remove the port from its current VLAN. Otherwise, your Telnet connection will
	be disconnected.
Configuring	Protocol-based VLAN, or protocol VLAN, is another approach to VLAN
Protocol-Based VLAN	implementation other than port-based VLAN. With protocol VLAN, the switch
	compares each packet received without a VLAN tag against the protocol templates
	based on the encapsulation format and the specified field. If a match is found, the
	switch tags the packet with the corresponding VLAN ID. Thus, the switch can
	assign packets to a VLAN by protocol.
Network Diagram	Figure 5 Network diagram for protocol-based VLAN configuration
	IP Server	AppleTalk Server

Eth1/0 /11 Eth1/0 /12

Eth 1/0/10

IP Host	AppleTalk Host
	Workroom

Networking and Configure the switch to automatically assign IP packets and Appletalk packets of Configuration the workroom to different VLANs, ensuring that the workstations can Requirements communicate with their respective servers properly.

Applicable Products

Product series	Software version	Hardware version
Switch 5500	Release V03.02.04	All versions
Switch 5500G	Release V03.02.04	All versions
Switch 4500	Release V03.03.00	All versions