Alcatel Carrier Internetworking Solutions Switch/Router Manuale Utente

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while VLAN 2 traffic is allowed to pass. The reverse is true for Switch 1 and Switch 3 (i.e., 
VLAN 2 traffic is blocked, while VLAN 1 traffic is allowed to pass). 

Service commands are used in Ethernet modules to assign groups to 10/100 and Gigabit ports. 
The 

, 

, 

, and 

 commands create, delete, modify, and view trunk services created 

to handle 802.1Q traffic over an Ethernet backbone. This trunk service, coupled with the 
default bridging service, allows you to pass both tagged and untagged frames over the same 
port.

The following diagram shows the logical structure of the trunked 

802.1Q

 groups:

In the above diagram, Groups 2 and 3 have been trunked to the physical port with an

 802.1Q

 

trunking service.