3com 8807 User Guide

[SW8800] interface gigabitethernet2/1/1 

# Set the GigabitEthernet2/1/1 as a trunk port and allows VLANs 2, 6 through 50, 
and 100 to pass.

[3Com-GigabitEthernet2/1/1] port link-type trunk

 

[3Com-GigabitEthernet2/1/1] port trunk permit vlan 2 6 to 50 100 

# Create the VLAN 100.

[SW8800] vlan 100 

# Configure the default VLAN ID of GigabitEthernet2/1/1 as 100.

[3Com-GigabitEthernet2/1/1] port trunk pvid vlan 100 

Symptom 1: Default VLAN ID configuration fails.

Solution: Take the following steps:

■

Execute the display interface or display port command to check if the port 
is a trunk port or a hybrid port. If it is neither of them, configure it as a trunk or 
hybrid port.

■

Then configure the default VLAN ID.

Symptom 2: The port is in down status.

Solution: Please check

■

If the cable connection is correct and if the optical fiver cable is inversely 
connected.

■

If the shutdown command is used on the port.

■

If the right optical module is inserted.