Reference Guide

784 | Private VLANs
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Place the Secondary VLANs in a Primary VLAN
A primary VLAN is a port-based VLAN that is specifically designated as a private VLAN. Doing so
enables the VLAN to be divided into secondary VLANs.
Private VLAN show Commands
2 Designate the VLAN as a community or isolated VLAN. private-vlan mode
{community | isolated}
INTERFACE VLAN
3 Add one or more host ports to the VLAN. {tagged | untagged}
interface
INTERFACE VLAN
Step Task Command Syntax Command Mode
1 Access INTERFACE VLAN mode for the VLAN
that you want to make the primary VLAN.
interface vlan vlan-id CONFIGURATION
2 Designate a VLAN as a primary VLAN. private-vlan mode primary INTERFACE VLAN
3 Map secondary VLANs to the primary VLAN. private-vlan mapping
secondary-vlan vlan-list
INTERFACE VLAN
4 Add promiscuous ports as tagged or untagged
interfaces. Add trunk ports as tagged.
{tagged | untagged} interface INTERFACE VLAN
5 Enable Proxy ARPing on the primary VLAN to
enable Layer 3 communication between hosts on
different secondary VLANs.
ip local-proxy-arp INTERFACE VLAN
Table 42-1. Private VLAN Commands
Task Command Syntax Command Mode
Display type and status of PVLAN
interfaces.
show interfaces private-vlan [interface interface] EXEC Privilege
Display PVLANs and/or interfaces
that are part of a PVLAN.
show vlan private-vlan [community | interface |
isolated | primary | primary_vlan | interface interface]
EXEC Privilege
Display primary-secondary VLAN
mapping.
show vlan private-vlan mapping
EXEC Privilege
Step Task Command Syntax Command Mode