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Private VLANs
Terms & Commands associated with Private VLANs
22
Computer Networking
Not Applicable
11/04/2012

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Term
show interfaces fa0/1 switchport
Definition
displays detailed switch port information
Term
show mac-address-table interface GigabitEthernet 0/1
vlan 1
Definition
Displaying MAC Address Table Information
Term
Isolated, Promiscuous, Community
Definition
The 3 types of ports found in a Private VLAN
Term
primary Private VLAN
Definition
A primary Private VLAN can be composed of many secondary Private VLANs with the secondary Private VLANs belonging to the same subnet of the primary Private VLAN.
Term
secondary Private VLAN
Definition
Every secondary Private VLAN is a child to a primary Private VLAN
and is mapped to one primary Private VLAN. End devices are attached to secondary Private VLANs.
Term
2 types of secondary Private VLANs
Definition
Community Private VLANs
Isolated Private VLANs
Term
Switch(config)# vlan pvlan-id
Definition
Enter VLAN global configuration mode to configure the Private VLANs
Term
Sw(config-vlan)# private-vlan {community | isolated | primary}
Definition
Configure the VLANs as a type of Private VLAN
Term
Switch(config)# vlan primary-vlan-id
Definition
The VLAN global configuration mode to configure primary VLAN
Term
Switch(config-vlan)# private-vlan association {secondary-vlan-list |
add secondary-vlan-list | remove secondary-vlan-list}
Definition
Associate the Layer 2 secondary VLAN to the primary
VLAN
Term
Switch(config)# interface vlan primary-vlan-id
Definition
Select the interface configuration mode for the primary VLAN
Term
Switch(config-if)# private-vlan mapping {secondary-vlan-list | add
secondary-vlan-list | remove secondary-vlan-list}
Definition
Map secondary VLANs to the Layer 3 VLAN interface of a primary VLAN to allow Layer 3 switching of Private VLAN ingress traffic
Term
Switch(config)# interface type slot/port
Definition
Select the LAN port interface to configure as the Private VLAN host or promiscuous port
Term
Switch(config-if)# switchport
Definition
Configure the LAN port for Layer 2 operation if the default behavior is a Layer 3 operation
Term
Sw(config-if)# switchport mode private-vlan {host | promiscuous}
Definition
Configure the Layer 2 port as a Private VLAN port either as host or promiscuous port
Term
Sw(config-if)# switchport private-vlan host-association primary-vlan-id secondary-vlan-id
Definition
To access Private VLAN ports,associate the community or isolated Private VLAN to the Private VLAN
Term
Switch(config-if)# switchport private-vlan mapping primary-vlan-id
{secondary-vlan-list | add secondary-vlan-list | remove secondary-vlan-list}
Definition
For promiscuous ports, configure the interface by mapping the port to the Private VLAN
Term
show interface type slot/port switchport
Definition
command commonly used to verify Private VLAN configuration
Term
show vlan private-vlan
Definition
command commonly used to verify Private VLAN configuration
Term
Sw(config-if)#switchport private-vlan association trunk primary_vlan_ID secondary_vlan_ID
Definition
command to configure a Layer 2 interface as a Private VLAN trunk port
Term
switchport private-vlan mapping [trunk]primary_vlan_IDsecondary_vlan_list
Definition
Configuring a Private VLAN Trunk...If the port is set to promiscuous, use the mapping command
Term
Sw(config-if)# switchport private-vlan trunk allowed vlan 10, 3,301-302
Definition
Command used to determine which VLANs are allowed on the trunk
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