Cisco 3020 - Catalyst Blade Switch Release Note page 43

Command Modes Interface configuration
Command History Release
12.2(40)SE1
Usage Guidelines The switch must be in VTP transparent mode when you configure private VLANs.
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.
A secondary VLAN can be mapped to only one primary SVI. IF you configure the primary VLAN as a
secondary VLAN, all SVIs specified in this command are brought down.
If you configure a mapping between two VLANs that do not have a valid Layer 2 private-VLAN
association, the mapping configuration does not take effect.
Examples
This example shows how to map the interface of VLAN 20 to the SVI of VLAN 18:
Switch# configure terminal
Switch# interface vlan 18
Switch(config-if)# private-vlan mapping 20
Switch(config-vlan)# end
This example shows how to permit routing of secondary VLAN traffic from secondary VLANs 303 to
305 and 307 through VLAN 20 SVI:
Switch# configure terminal
Switch# interface vlan 20
Switch(config-if)# private-vlan mapping 303-305, 307
Switch(config-vlan)# end
You can verify your setting by entering the show interfaces private-vlan mapping privileged EXEC
command.
Related Commands Command
show interfaces private-vlan
mapping
OL-14130-02
Modification
This command was introduced.
Description
Display private-VLAN mapping information for the VLAN SVIs.
Release Notes for the Cisco Catalyst Blade Switch 3020 for HP, Cisco IOS Release 12.2(40)SE1 and Later
Documentation Updates
43