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Cisco ME 3400 Ethernet Access Switch Command Reference
OL-9640-10
Chapter 2 Cisco ME 3400 Ethernet Access Switch Cisco IOS Commands
switchport private-vlan
A promiscuous port must be an NNI; UNIs or ENIs cannot be configured as promiscuous ports. To
configure a port as a UNI, enter the port-type uni interface configuration command.
If the port is in private-VLAN host or promiscuous mode but the VLANs do not exist, the command is
allowed, but the port is made inactive.
The secondary_vlan_list parameter cannot contain spaces. It can contain multiple comma-separated
items. Each item can be a single private-VLAN ID or a hyphenated range of private-VLAN IDs. The list
can contain one isolated VLAN and multiple community VLANs.
You can map a promiscuous port to only one primary VLAN. If you enter the switchport private-vlan
mapping command on a promiscuous port that is already mapped to a primary and secondary VLAN,
the primary VLAN mapping is overwritten.
You can add or remove secondary VLANs from promiscuous port private-VLAN mappings by using the
add and remove keywords.
Entering the switchport private-vlan association host command has the same effect as entering the
switchport private-vlan host-association interface configuration command.
Entering the switchport private-vlan association mapping command has the same effect as entering
the switchport private-vlan mapping interface configuration command.
Examples This example shows how to configure an interface as a private VLAN host port and associate it with
primary VLAN 20 and secondary VLAN 501:
Switch# configure terminal
Switch(config)# interface fastethernet 0/1
Switch(config-if)# switchport mode private-vlan host
Switch(config-if)# switchport private-vlan host-association 20 501
Switch(config-if)# end
This example shows how to configure an NNI as a private-VLAN promiscuous port and map it to a
private VLAN. The interface is a member of primary VLAN 20 and secondary VLANs 501 to 503 are
mapped to it.
Switch# configure terminal
Switch(config)# interface gigabitethernet0/1
Switch(config-if)# switchport mode private-vlan promiscuous
Switch(config-if)# switchport private-vlan mapping 20 add 501-503
Switch(config-if)# end
You can verify private-VLAN mapping by using the show interfaces private-vlan mapping privileged
EXEC command.
Related Commands Command Description
show interfaces private-vlan
mapping
Displays private VLAN mapping information for VLAN SVIs.?
show vlan private-vlan Displays all private VLAN relationships or types configured on the
switch.
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