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VLAN C
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switchport allowed vlan
Use this command to configure VLAN groups on the selected interface.
Use the no form to restore the default.
Syntax
• switchport allowed vlan {add vlan-list [tagged | untagged] |
remove vlan-list}
no switchport allowed vlan
• add vlan-list - List of VLAN identifiers to add.
• remove vlan-list - List of VLAN identifiers to remove.
• vlan-list - Separate nonconsecutive VLAN identifiers with a comma
and no spaces; use a hyphen to designate a range of IDs. Do not
enter leading zeros. (Range: 1-4094)
Default Setting
All ports are assigned to VLAN 1 by default.
The default frame type is untagged.
Command Mode
Interface Configuration (Ethernet, Port Channel)
Command Usage
• If switchport mode is set to trunk, then you can only assign an
interface to VLAN groups as a tagged member.
• Frames are always tagged within the switch. The tagged/untagged
parameter used when adding a VLAN to an interface tells the switch
whether to keep or remove the tag from a frame on egress.
• If none of the intermediate network devices nor the host at the other
end of the connection supports VLANs, the interface should be added
to these VLANs as an untagged member. Otherwise, it is only
necessary to add at most one VLAN as untagged, and this should
correspond to the native VLAN for the interface.
• If a VLAN on the forbidden list for an interface is manually added to
that interface, the VLAN is automatically removed from the forbidden
list for that interface.