Configuring IPv4 over PPPoE Without VLANs

To configure PPPoE over an Ethernet interface without VLANs:

  1. Specify a Fast Ethernet, Gigabit Ethernet, or 10-Gigabit Ethernet interface.
    host1(config)#interface fastEthernet 4/1
  2. Specify PPPoE as the encapsulation method on the interface.
    host1(config-if)#pppoe
  3. Create a PPPoE subinterface.
    host1(config-if)#pppoe subinterface fastEthernet 4/1.1
  4. Specify PPP as the encapsulation method on the interface.
    host1(config-subif)#encapsulation ppp
  5. (Optional) Configure an access concentrator (AC) name on the PPPoE interface.
    host1(config-subif)#pppoe acname CYM9876
  6. (Optional) Set up the router to prevent a client from establishing more than one session using the same MAC address.

    When the duplicate protection feature is enabled, multiple IWF PPPoE sessions (sent from PPPoE clients to the PPPoE access concentrator) that contain the same MAC address are still processed and can access network services until the maximum number of PPPoE sessions configured per major interface (configured using the pppoe sessions command) is reached.

    host1(config-subif)#pppoe duplicate-protection
  7. Assign an IP address and mask.
    host1(config-if)#ip address 192.6.129.5 255.255.255.0
  8. (Optional) Configure additional PPPoE subinterfaces by completing Steps 3 through 7 using unique numbering.

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