Cabletron Systems 802.1Q Manual De Usuario

Chapter 3: VLAN Configuration

1Q TRUNK – This mode sets the port for transmitting to another 
802.1Q aware device. In this mode, all frames are transmitted with 
a tag header included in the frame (excluding BPDUs). The switch 
will drop all untagged frames it receives on the 1Q Trunk port. The 
Port VLAN List for the port includes all VLANs.

1D TRUNK – This mode sets the port for transmitting to a legacy 
802.1D switch fabric. In this mode, all incoming frames are 
classified into the default VLAN and all frames are transmitted 
untagged. The switch expects to receive only untagged frames 
through the 1D Trunk port. This mode also updates the Port 
VLAN List and makes the port eligible to transmit frames for all 
VLANs. The 1D Trunk mode can be used in conjunction with the 
“Forward Default VLAN Out All Ports” parameter and the Default 
VLAN to allow all stations on a legacy portion of the network to 
access all stations or servers in the 802.1Q portion of the network.

When the desired operational mode for the port is displayed, use the 
arrow keys to highlight the SAVE command at the bottom of the 
screen. 

Press ENTER. The message “SAVED OK” displays.

The Port Assignment Configuration screen also enables the user to set 
each port’s VLAN ID (PVID) by stepping through a list of all configured 
VLANs. To assign a VLAN ID to a port in this manner, perform the 
following steps:

Use the arrow keys to highlight the VLAN ID field for the port 
combination you wish to change.

Use the SPACE bar or BACKSPACE key to step sequentially through 
the previously configured VLAN ID numbers. Only existing VLAN 
IDs will be displayed.

It may be necessary to use the NEXT and PREVIOUS 
commands to page through the available ports. For 
instructions, refer to