VLAN Support on a PPPoE Interface

History

Release	Modification
5.6.0	PPPoE VLAN support introduced

VLAN support on a PPPoE interface is enabled by configuring the target-interface as <base-eth-interface>.<vlan-id>. For example, if the DSL modem is connected to the Ethernet interface eth0 on the system, and the ISP requires using VLAN tag 1 for the PPPoE connection, the target-interface to configure is eth0.1.

Example Configuration:

device-interface pppoe-dev
    name pppoe-dev
    type pppoe
    target-interface eth0.1
    pppoe
        user-name username
        password password
        authentication-protocol chap
    exit
    enabled true
    network-interface pppoe-intf
        name pppoe-intf
        source-nat true
    exit

note

PPPoE interfaces are natively Linux interfaces. The SSR uses a set of scripts (running in Linux) to manage the PPPoE interface and leverages KNI, iptable rules, and network namespace to exchange packets with the PPPoE interface.

For additional information about configuring PPPoE interfaces, see Configuring PPPoE.

To further illustrate the use of the PPPoE VLAN tag, the following configuration snippet shows the difference between a non-VLAN tagged interface and two tagged interfaces.

device-interface pppoe-dev-1
    name pppoe-dev-1
    description "PPPoE device NOT using VLAN"
    type pppoe
    target-interface eth1
    pppoe
        user-name user1
        password password1
        authentication-protocol chap
    exit
    network-interface pppoe-intf-1
        name pppoe-intf-1
        source-nat true
    exit
exit
device-interface pppoe-dev-2
    name pppoe-dev-2
    description "PPPoE device using VLAN 0"
    type pppoe
    target-interface eth1.0
    pppoe
        user-name user2
        password password2
        authentication-protocol chap
    exit
    network-interface pppoe-intf-2
        name pppoe-intf-2
        source-nat true
    exit
exit
device-interface pppoe-dev-3
    name pppoe-dev-3
    description "PPPoE device using VLAN 100"
    type pppoe
    target-interface eth1.100
    pppoe
        user-name user3
        password password3
        authentication-protocol chap
    exit
    network-interface pppoe-intf-3
        name pppoe-intf-3
        source-nat true
    exit
exit