Private VLAN

ARLS1- VLAN 300, PCB - VLAN 200 and PCC VLAN 100.

Configure VLANS

ALS1(Config)#vlan 300
ALS1(Config-Vlan)#Private-Vlan Primary
ALS1(Config-Vlan)#Private-Vlan association 200,100

DSL1(Config)# vlan 100
DSL1(Config-vlan)#Private-Vlan Isolated

DSL2(Config)#vlan 200
DSL2(Config-vlan)#Private-Vlan community

To see changes "show vlan private-vlan"

Configure Ports

ALS1(Config-if)#switchport private-vlan mapping 300 200,100
ALS1(Config-if)#switchport mode private-vlan promiscuous

DSL1(Config-if)#switchport private-vlan host-association 300 100
DSL1(Config-if)#switchport mode private-vlan host

DSL1(Config-if)#switchport private-vlan host-association 300 200
DSL2(Config-if)#switchport mode private-vlan host