3Com Switch 7750 Configuration Guide Guide

Configuring a Protocol-Based VLAN 97
# Add the port to VLAN 7, and add VLAN 7 to the list of untagged VLANs
permitted to pass through the port.
[SW7750-Ethernet1/0/7] port hybrid vlan 7 untagged
# Associate the port with the two indexes of VLAN 7.
[SW7750-Ethernet1/0/7] port hybrid protocol-vlan vlan 7 1 2