Alcatel Carrier Internetworking Solutions Switch/Router 사용자 설명서

Page 22-6

Source devices sometimes generate more than one traffic type; for example, a device could 
generate 

IP

 traffic primarily but also generate a secondary stream of AppleTalk. When a 

device generates secondary traffic that does not match any existing 

VLAN

 policy, that traffic is 

grouped into the primary 

VLAN

 of which the device is a member.

To continue the example, if a device generates both 

IP

 and AppleTalk, and both an 

IP

 

VLAN

 

and an AppleTalk 

VLAN

 exist, that device is made a member of both 

VLAN

s and no problem 

occurs. If, however, an AppleTalk 

VLAN

 does not exist, all traffic from that device is grouped 

into the existing 

VLAN

 of which the device is a member – in this example, the 

IP

 

VLAN

. This 

can cause communication problems, as explained below. 

12345678

123456

In this example Device A is
assigned to default 

VLAN

 #1

because it does not match any
existing 

VLAN

 policy.

Devices B and C are assigned to

VLAN

 2 because they generate 

IP

traffic. The secondary AppleTalk
traffic Device C generates is also
grouped into 

VLAN

 2, since the

AppleTalk traffic does not match
any existing 

VLAN

 policy.

The result is that Devices A and
C are unable to communicate. 

 solves this problem. If

a n   A p p l e T a l k  

V L A N

  e x i s t s ,

Device A will be assigned to it
and removed from Default 

VLAN

#1. Device C will be assigned to
both the 

IP

 

VLAN

 and the Apple-

Talk 

VLAN

. Devices A and C can

then communicate.

no policies allowed

IP

 protocol 

VLAN

A s s i g n m e n t   o f   d e v i c e s   t o
default 

VLAN

 when they do not

match any policies is enabled.

IP

 traffic only

AppleTalk traffic only

IP

 and AppleTalk 

traffic