Private-Vlan Mapping - Cisco Catalyst 3750 Command Reference Manual

Chapter 2 Catalyst 3750 Switch Cisco IOS Commands

private-vlan mapping

Use the private-vlan mapping interface configuration command on a switch virtual interface (SVI) on
the switch stack or on a standalone switch to create a mapping between a private-VLAN primary and
secondary VLANs so that both VLANs share the same primary VLAN SVI. Use the no form of this
command to remove private-VLAN mappings from the SVI.
This command is available only if the stack master is running the enhanced multilayer image (EMI). We
strongly recommend that the stack members also run the EMI when private VLANs are configured.
Syntax Description
secondary-vlan-list
add
remove
The switch must be in VTP transparent mode when you configure private VLANs.
Note
Defaults The default is to have no private VLAN SVI mapping configured.
Command Modes
Interface configuration
Command History Release
12.2(20)SE
Usage Guidelines
The SVI of the primary VLAN is created at Layer 3.
Configure Layer 3 VLAN interfaces (SVIs) only for primary VLANs. You cannot configure Layer 3
VLAN interfaces for secondary VLANs. SVIs for secondary VLANs are inactive while the VLAN is
configured as a secondary VLAN.
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.
Traffic that is received on the secondary VLAN is routed by the SVI of the primary VLAN.
78-16181-03
private-vlan mapping {[add | remove] secondary-vlan-list}
no private-vlan mapping
Specify one or more secondary VLANs to be mapped to the primary VLAN
SVI.
(Optional) Map the secondary VLAN to the primary VLAN SVI.
(Optional) Remove the mapping between the secondary VLAN and the
primary VLAN SVI.
Modification
This command was introduced.
private-vlan mapping
Catalyst 3750 Switch Command Reference
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