Alcatel Carrier Internetworking Solutions Switch/Router 用户手册

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AutoTracker 

VLAN

s enable you to control communications between end stations in your 

network. You define policies that determine membership in the 

VLAN

 and AutoTracker auto-

matically locates ports or devices within the Group that fit the policies and places them into 
the 

VLAN

.

You can define physical policies or logical policies (or combinations thereof) to determine 
membership in AutoTracker 

VLAN

s. Physical policies consist of port rules: you define the 

VLAN

 members as one or more specific ports and 

VLAN

 membership is limited to the ports 

defined and the 

MAC

 addresses of devices connected to those ports.

Logical 

VLAN

 policies can consist of 

MAC

 address rules, protocol rules, network address rules, 

or user-defined rules. Ports are assigned to 

VLANs

 that have logical rules when the 

MPX

 exam-

ines frames that originate from devices connected to the Group’s set of ports. If a frame is 
received that matches a logical 

VLAN

 rule, the source device’s 

MAC

 address and the port to 

which the source device is connected are both made 

VLAN

 members.

The members of an AutoTracker 

VLAN

 thus consist of source devices originating frames that 

fit the 

VLAN

’s policies and the ports to which those source devices are connected. Instruc-

tions for creating AutoTracker 

VLANs

You can define a maximum of 32 AutoTracker policies of each type per Group. There is no 
restriction on the number of rules you can define per 

VLAN

, as long as the maximum number 

of policies for the Group is not exceeded.

A switch port – or a device connected to a switch port – can belong to more than one 

VLAN

 

simultaneously, as determined by the rules the port or device matches. A port or device is 
included in a 

VLAN

 if it matches any one rule.

You can define the following types of rules:

. Port policies enable you to define membership in the 

VLAN

 on the basis of ports. 

Members of the 

VLAN

 will consist of devices connected to specific ports on one switch or on 

multiple switches in the Group.

. 

MAC

 address policies enable you to define membership in the 

VLAN

 on 

the basis of devices’ 

MAC

 addresses. This is the simplest type of rule and provides the maxi-

mum degree of control and security. Members of the 

VLAN

 will consist of devices with 

specific 

MAC

 addresses. These devices may all be connected to one switch or they may be 

connected to different switches in the Group. A maximum of 10,240 MAC addresses are 
supported per policy.

. Protocol policies enable you to define membership in the 

VLAN

 on the basis 

of the protocol that devices use to communicate. All devices that communicate with the speci-
fied protocol become members of the 

VLAN

.

You can specify 

VLAN

 membership according to the following protocols: 

IP

, 

IPX

, AppleTalk, 

or 

DECN

et. In addition, you can specify membership according to Ethernet type, source and 

destination 

SAP

 (service access protocol) header values, or 

SNAP

 (sub-network access proto-

col) type.