Cabletron Systems 802.1Q Manual De Usuario

Chapter 3: VLAN Configuration

In some instances it may be desirable to see which VLAN IDs and the 
associated ports that are currently assigned to a particular protocol. To 
display this information, proceed as follows:

Use the arrow keys to highlight the Protocol field at the bottom of the 
screen.

Press the SPACE bar to step to the appropriate protocol.

Press ENTER. The screen displays all VLAN IDs and associated ports 
currently assigned to the selected protocol. 

If there is more information than the screen can display, use the NEXT 
and PREVIOUS command at the bottom of the screen to display the 
information.

To assign all Ether Types associated with a Protocol Family to a 
VLAN ID, proceed as follows:

Ether type 
(Modifiable)

Enter the values of a new Ether type when CUSTOM is 
selected in the Protocol Type field.The value 0x0 will 
display, which can be modified. A protocol may have more 
that one Ether Type. Any Ether Type greater than 05dc 
(hex) and less than ffff (hex) may be entered.  The 
maximum number of Ether Types configured per switch is 
32. If an attempt is made to enter more that 32, an error 
message, “ETHER TYPE TABLE FULL” displays. 

To enter values of a particular Ether Type, refer to 

The list of Ether Type configurations is searched prior to the list 
of “Protocol Family” configurations when a frame is received on 
a switch.  This means that if Ether Type of 0x0800 is configured 
on port 10 with VID of 5 and IP is configured on port 10 with 
VID of 6, the incoming frame will receive the VID 5 as Ether 
Types have priority over “Protocol Family”.