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Catalyst 3750-X and 3560-X Switch Command Reference
OL-29704-01
Chapter 2 Catalyst 3750-X and 3560-X Switch Cisco IOS Commands
switchport mode private-vlan
switchport mode private-vlan
Use the switchport mode private-vlan interface configuration command on the switch stack or on a
standalone switch to configure a port as a promiscuous or host private VLAN port. Use the no form of
this command to reset the mode to the appropriate default for the device.
switchport mode private-vlan {host | promiscuous}
no switchport mode private-vlan
Note This command is not supported on switches running the LAN base feature set.
Syntax Description
Defaults The default private-VLAN mode is neither host nor promiscuous.
The default switchport mode is dynamic auto.
Command Modes Interface configuration
Command History
Usage Guidelines A private-VLAN host or promiscuous port cannot be a Switched Port Analyzer (SPAN) destination port.
If you configure a SPAN destination port as a private-VLAN host or promiscuous port, the port becomes
inactive.
Do not configure private VLAN on ports with these other features:
• Dynamic-access port VLAN membership
• Dynamic Trunking Protocol (DTP)
• Port Aggregation Protocol (PAgP)
• Link Aggregation Control Protocol (LACP)
• Multicast VLAN Registration (MVR)
• Voice VLAN
A private-VLAN port cannot be a SPAN destination port.
While a port is part of the private-VLAN configuration, any EtherChannel configuration for it is inactive.
host Configure the interface as a private-VLAN host port. Host ports belong to
private-VLAN secondary VLANs and are either community ports or isolated
ports, depending on the VLAN that they belong to.
promiscuous Configure the interface as a private-VLAN promiscuous port. Promiscuous
ports are members of private-VLAN primary VLANs.
Release Modification
12.2(53)SE2 This command was introduced.
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