Configuring Dynamic PPPoE over Static PPPoE with Ethernet and S-VLAN Interface Columns

Figure 1 shows dynamic PPPoE subinterface columns over PPPoE major interfaces using S-VLANs over Ethernet.

Figure 1: Dynamic PPPoE over Static PPPoE with S-VLAN Interface Columns

To configure an S-VLAN subinterface to support a dynamic PPPoE subinterface:

1. Specify a Fast Ethernet, Gigabit Ethernet, or 10-Gigabit Ethernet interface.
   host1(config)#interface fastEthernet 4/1
2. Specify VLAN as the encapsulation method.
   host1(config-if)#encapsulation vlan

   This command creates the VLAN major interface.

3. Create a VLAN subinterface by adding a subinterface number to the interface identifier.
   host1(config-if)#interface fastEthernet 3/1.1
4. Assign an S-VLAN ID and a VLAN ID for the subinterface.
   host1(config-if)#svlan id 3 300
5. Assign an S-VLAN Ethertype.
   host1(config-if)#svlan ethertype 9200
6. Specify PPPoE as the encapsulation method on the interface.
   host1(config-subif)#encapsulation pppoe

   This command creates the PPPoE major interface.

7. Assign a profile.
   host1(config-subif)#pppoe profile pppoeProfile3

   The default encapsulation type, any, applies to any autoconfigured encapsulation that does not have a specific profile assignment.

8. Configure the interface to detect and accept dynamic PPPoE subinterfaces.
   host1(config-subif)#pppoe auto-configure