- Preparing for Broadband Access Aggregation
- Providing Protocol Support for Broadband Access Aggregation of PPPoE Sessions
- PPPoE Session Limit Local Override
- PPPoE Circuit-Id Tag Processing
- Configuring PPP over Ethernet Session Limit Support
- PPP-Max-Payload and IWF PPPoE Tag Support
- PPPoE QinQ Support
- PPPoE Session Limiting on Inner QinQ VLAN
- PPPoE Agent Remote-ID and DSL Line Characteristics Enhancement
- Enabling PPPoE Relay Discovery and Service Selection Functionality
- Configuring Cisco Subscriber Service Switch Policies
- Per Session Queueing and Shaping for PPPoEoVLAN Using RADIUS
- 802.1P CoS Bit Set for PPP and PPPoE Control Frames
- PPPoE Smart Server Selection
- Monitoring PPPoE Sessions with SNMP
- PPPoE on ATM
- PPPoE on Ethernet
- Remote Access MPLS VPNs
- Broadband High Availability Stateful Switchover
- Broadband High Availability In-Service Software Upgrade
- Controlling Subscriber Bandwidth
- PPPoE Service Selection
PPPoE on Ethernet
The PPPoE on Ethernet feature adds support to Point-to-Point Protocol over Ethernet (PPPoE) by adding direct connection to actual Ethernet interfaces. PPPoE provides service-provider digital subscriber line (DSL) support. This Ethernet specification can be used by multiple hosts on a shared Ethernet interface to open PPP sessions to multiple destination with one or more bridging modems.
Finding Feature Information
Your software release may not support all the features documented in this module. For the latest feature information and caveats, see the release notes for your platform and software release. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the Feature Information Table at the end of this document.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.
Prerequisites for PPPoE on Ethernet
Before you can configure the PPPoE on Ethernet feature, you need to configure a virtual private dialup network (VPDN) group using the accept dialin command, enable PPPoE, and specify a virtual template for PPPoE sessions.
Restrictions for PPPoE on Ethernet
Information About PPPoE on Ethernet
Benefits of Using PPPoE on Ethernet
Broadband Remote Access
For a bridged-Ethernet topology, the PPPoE on Ethernet feature allows access providers to maintain session abstraction associated with PPP networks.
PPPoE
PPPoE provides the ability to connect a network of hosts over a simple bridging access device to a remote access concentrator where each host utilizes its own PPP stack. It also gives users a familiar interface.
PPPoE provides service-provider DSL support. In service-provider DSL deployments, PPPoE leverages Ethernet scale curves and it uses an embedded base.
How to Enable and Configure PPPoE on Ethernet
- Enabling PPPoE on Ethernet in a VPDN Group
- Limiting PPPoE Sessions from a MAC Address
- Creating and Configuring a Virtual Template
- Specifying an Ethernet Interface
- Enabling PPPoE on an Ethernet Interface
- Monitoring and Maintaining VPDN Groups
Enabling PPPoE on Ethernet in a VPDN Group
To configure the physical interface that will carry the PPPoE session and link it to the appropriate virtual template interface, you need to complete the following steps.
DETAILED STEPS
| Command or Action | Purpose | |
|---|---|---|
|
|
|
Enables virtual private dial-up networking. |
|
|
|
Associates a VPDN group to a customer or VPDN profile. |
|
|
|
Creates an accept dial-in VPDN group. |
|
|
|
Specifies the VPDN group to be used to establish PPPoE sessions. |
|
|
|
Specifies which virtual template will be used to clone virtual access interfaces. |
Limiting PPPoE Sessions from a MAC Address
To set the limit of sessions to be sourced from a MAC address, use the following command in VPDN configuration mode:
| Command |
Purpose |
|---|---|
Router(config-if)# pppoe session-limit per-mac
number
|
Sets the limit of sessions to be sourced from a MAC address. |
Creating and Configuring a Virtual Template
Other optional configuration commands can be added to the virtual template configuration. For example, you can enable the PPP authentication on the virtual template using the ppp authentication chap command. See the " Virtual Interface Template Service " chapter in the Cisco IOS Dial S>olutions Configuration Guide for more information about configuring the virtual template.
Although Cisco Express Forwarding switching is supported, flow, and optimum switching are not; these configurations are ignored on the PPPoE virtual access interface. Cisco Express Forwarding is enabled by default for IP. All other protocol traffic will be processed switched.
 Note |
The PPP reliable link that uses Link Access Procedure, Balanced (LAPB) is not supported. |
To create and configure a virtual template, use the following commands beginning in global configuration mode:
DETAILED STEPS
| Command or Action | Purpose | |
|---|---|---|
|
|
|
Creates a virtual template, and enters interface configuration mode. |
|
|
|
Enables IP without assigning a specific IP address on the LAN. |
|
|
|
Sets the maximum transmission unit (MTU) size for the interface. |
Specifying an Ethernet Interface
After you create a virtual template for PPPoE on Ethernet, specify a multipoint or point-to-point interface. To specify an Ethernet multipoint interface, use the following commands in global configuration mode:
| Command |
Purpose |
|---|---|
Router# interface ethernet
interface-number
|
Specifies the Ethernet interface using the appropriate format of the interface ethernet command. |
Enabling PPPoE on an Ethernet Interface
To enable PPPoE on Ethernet interfaces, use the following command in global configuration mode:
| Command |
Purpose |
|---|---|
Router# pppoe enable
|
Specifies the VPDN group to be used for establishing PPPoE sessions. |
Monitoring and Maintaining VPDN Groups
To monitor and maintain VPDN groups, use the following commands in EXEC mode:
| Command |
Purpose |
|---|---|
Router# show vpdn |
Displays information about active Level 2 Forwarding (L2F) Protocol tunnel and message identifiers in a VPDN. |
Router# show vpdn session packet |
Displays PPPoE session statistics. |
Router# show vpdn session all |
Displays PPPoE session information for each session ID. |
Router# show vpdn tunnel |
Displays PPPoE session count for the tunnel. |
Configuration Examples for PPPoE on Ethernet
PPPoE on Ethernet Example
The following are examples of the vpdn enable and interface virtual-template commands:
vpdn enable vpdn-group 1 accept dialin protocol pppoe virtual template 1 pppoe limit per-mac <number> interface virtual-template 1 ip address 10.100.100.100 255.255.255.0 mtu 1492
For PPPoE virtual template interfaces, the mtu command must be configured because Ethernet has a maximum payload size of 1500 bytes, the PPPoE header is 6 bytes, and PPP Protocol ID is 2 bytes.
Note |
Dial-out mode will not be supported. |
Enabling PPPoE on an Ethernet Interface Example
The following example enables PPPoE on an Ethernet interface:
interface ethernet1/0 pppoe enable
Additional References
The following sections provide references related to the PPPoE on Ethernet feature.
Related Documents
| Related Topic |
Document Title |
|---|---|
| Configuring PPPoE on ATM |
PPPoE over ATM |
| Configuring PPPoE on cable interfaces |
|
| Configuring PPPoE on IEEE 802.1Q encapsulation |
PPPoE Over IEEE 802.1Q VLANs |
Standards
| Standard |
Title |
|---|---|
| No new or modified standards are supported by this feature, and support for existing standards has not been modified by this feature. |
-- |
MIBs
| MIB |
MIBs Link |
|---|---|
| No new or modified MIBs are supported by this feature, and support for existing MIBs has not been modified by this feature. |
To locate and download MIBs for selected platforms, Cisco IOS XE releases, and feature sets, use Cisco MIB Locator found at the following URL: |
RFCs
| RFC |
Title |
|---|---|
| RFC 2516 |
A Method for Transmitting PPPoE |
| RFC 4813 |
Multiprotocol Encapsulation over ATM Adaptation Layer 5 |
Technical Assistance
| Description |
Link |
|---|---|
| The Cisco Support website provides extensive online resources, including documentation and tools for troubleshooting and resolving technical issues with Cisco products and technologies. To receive security and technical information about your products, you can subscribe to various services, such as the Product Alert Tool (accessed from Field Notices), the Cisco Technical Services Newsletter, and Really Simple Syndication (RSS) Feeds. Access to most tools on the Cisco Support website requires a Cisco.com user ID and password. |
Feature Information for PPPoE on Ethernet
The following table provides release information about the feature or features described in this module. This table lists only the software release that introduced support for a given feature in a given software release train. Unless noted otherwise, subsequent releases of that software release train also support that feature.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.
| Table 1 | Feature Information for PPPoE on Ethernet |
| Feature Name |
Releases |
Feature Information |
|---|---|---|
| PPPoE on Ethernet |
Cisco IOS XE Release 2.5 |
This feature was introduced on Cisco ASR 1000 Series Aggregation Services Routers. The PPPoE on Ethernet feature adds support to Point-to-Point Protocol over Ethernet (PPPoE) by adding direct connection to actual Ethernet interfaces. PPPoE provides service-provider digital subscriber line (DSL) support. This Ethernet specification can be used by multiple hosts on a shared Ethernet interface to open PPP sessions to multiple destination with one or more bridging modems. |
Cisco and the Cisco logo are trademarks or registered trademarks of Cisco and/or its affiliates in the U.S. and other countries. To view a list of Cisco trademarks, go to this URL: www.cisco.com/go/trademarks. Third-party trademarks mentioned are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company. (1110R)
Any Internet Protocol (IP) addresses and phone numbers used in this document are not intended to be actual addresses and phone numbers. Any examples, command display output, network topology diagrams, and other figures included in the document are shown for illustrative purposes only. Any use of actual IP addresses or phone numbers in illustrative content is unintentional and coincidental.
Feedback