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• Configuring PPPoE Interfaces    

Configuring PPPoE Interfaces

To configure PPPoE on an LN1000 router, perform the following tasks:

1. Configure PPPoE encapsulation for an Ethernet interface.
2. Specify the logical Ethernet interface as the underlying interface for the PPPoE session.
3. Configure the operational mode as server.
4. Identify the access concentrator by a unique name.
5. Optionally, specify how many seconds to wait before attempting to reconnect.
6. Provide a name for the type of service provided by the access concentrator.
7. Optionally, configure the maximum transmission unit (MTU) of the interface.
8. Optionally, configure the PPPoE interface address.
9. Optionally, configure the MTU size for the protocol family.
10. Optionally, disable the sending of keepalive messages on the logical interface.

Setting the Appropriate Encapsulation on the PPPoE Interface

For PPPoE on an Ethernet interface, you must configure encapsulation on the logical interface and use PPP over Ethernet encapsulation.

To configure logical interface encapsulation properties, include the encapsulation statement:

Configuring a PPPoE Underlying Interface

To configure the underlying Fast Ethernet, Gigabit Ethernet, and 10-Gigabit Ethernet interfaces, include the underlying-interface statement at the [edit interfaces pp0 unit logical-unit-number pppoe-options] hierarchy level:

Specify the logical Ethernet interface as the underlying interface.

Identifying the Access Concentrator

When configuring a PPPoE client, identify the access concentrator by a unique name by including the access-concentrator statement at the [edit interfaces interface-name unit logical-unit-number pppoe-options] hierarchy level:

Specify the access concentrator name.

Configuring the PPPoE Service Name

When configuring a PPPoE client, identify the type of service provided by the access concentrator—such as the name of the Internet service provider (ISP), class, or class of service—by including the service-name statement at the [edit interfaces interface-name unit logical-unit-number pppoe-options] hierarchy level:

Configuring the PPPoE Server Mode

When configuring a PPPoE server, identify the mode by including the server statement at the [edit interfaces interface-name unit logical-unit-number pppoe-options] hierarchy level:

Configuring the PPPoE Source and Destination Addresses

When configuring a PPPoE client or server, assign source and destination addresses—for example, 192.168.1.1/32 and 192.168.1.2. To assign the source and destination addresses, include the address and destination statements at the [edit interfaces pp0 family inet] hierarchy level:

Deriving the PPPoE Source Address from a Specified Interface

For a router supporting PPPoE, you can derive the source address from a specified interface—for example, the loopback interface, lo0.0—and assign a destination address—for example, 192.168.1.2. The specified interface must include a logical unit number and have a configured IP address. To derive the source address and assign the destination address, include the unnumbered-address and destination statements at the [edit interfaces pp0 family inet] hierarchy level:

Configuring the PPPoE IP Address by Negotiation

You can have the PPPoE client router obtain an IP address by negotiation with the remote end. This method might require the access concentrator to use a RADIUS authentication server. To obtain an IP address from the remote end by negotiation, include the negotiate-address statement:

Configuring the Protocol MTU PPPoE

You can configure the maximum transmission unit (MTU) size for the protocol family. Specify a range from 0 through 5012 bytes. Ensure that the size of the media MTU is equal to or greater than the sum of the protocol MTU and the encapsulation overhead. To set the MTU, include the mtu statement at the [edit interfaces pp0 family (inet | inet6 | mpls) ] hierarchy level: