Users Guide

Port Characteristics 661
Configuring a Port in General Mode
Use the following commands to configure an interface with full 802.1q
support and configure the VLAN membership information for the interface.
General mode allows the configuration of the full range of VLAN tagging,
including configuring a port with no default or native VLAN. In general, it is
recommended that operators use either trunk or access mode as their default
behaviors better match operator expectations.
Command Purpose
configure Enter global configuration mode.
interface interface Enter interface configuration mode for the specified
interface. The interface variable includes the interface type
and number, for example tengigabitethernet 1/0/3.
A range of interfaces can be specified using the interface
range command. For example, interface range
tengigabitethernet 1/0/8-12 configures interfaces 8, 9, 10,
11, and 12.
switchport mode general Configure the interface as a tagged and untagged Layer-2
VLAN interface.
switchport general
allowed vlan
[add|remove] vlan-list
{tagged|untagged}
Configure the VLAN membership for the port. This
command can also be used to change the egress tagging for
packets without changing the VLAN assignment.
• add vlan-list — List of VLAN IDs to add. Separate
nonconsecutive VLAN IDs with a comma and no spaces.
Use a hyphen to designate a range of IDs.
(Range: 1–
4093)
• remove vlan-list — List of VLAN IDs to remove. Separate
nonconsecutive VLAN IDs with a comma and no spaces.
Use a hyphen to designate a range of IDs.
• tagged — Sets the port to transmit tagged packets for the
VLANs. If the port is added to a VLAN without specifying
tagged or untagged, the default is untagged.
• untagged — Sets the port to transmit untagged packets
for the VLANs.