SMC Networks SMC TigerStack III SMC6824MPE - Manual (Page 498)

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• 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.
Example
The following example shows how to add VLANs 1, 2, 5 and 6 to the
allowed list as tagged VLANs for port 1.
switchport forbidden vlan
Use this command to configure forbidden VLANs. Use the no form to
remove the list of forbidden VLANs.
Syntax
switchport forbidden vlan {add vlan-list | remove vlan-list}
no switchport forbidden 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
No VLANs are included in the forbidden list.
Command Mode
Interface Configuration (Ethernet, Port Channel)
Console(config)#interface ethernet 1/1
Console(config-if)#switchport allowed vlan add 1,2,5,6 tagged
Console(config-if)#