Configuring Broadband Access Aggregation Features Roadmap

This roadmap lists the features documented in the Broadband Access Aggregation Configuration Guide and maps them to the modules in which they appear.

Roadmap History

This roadmap was first published on May 2, 2005, and was last updated on January 14, 2008.

Feature and Release Support

Table 3 lists the broadband access aggregation features supported in Cisco IOS Releases 12.2S, 12.2T, 12.3, 12.3T and 12.4T. Only features that were introduced or modified in Cisco IOS Releases 12.2(1) or 12.0(3)S or later releases appear in the table. Not all features may be supported in your Cisco IOS software release.

Table 3 lists broadband access aggregation feature support for the following Cisco IOS software release trains:

•Cisco IOS Releases 12.2T, 12.3, 12.3T and 12.4T

Note Table 3 lists only the Cisco IOS software release that introduced support for a given feature in a given Cisco IOS software release train. Unless noted otherwise, subsequent releases of that Cisco IOS software release train also support that feature.

Table 3 Supported Configuring Broadband Access Aggregation Features 

Release
Feature Name
Feature Description
Where Documented
Cisco IOS Releases 12.2T, 12.3, 12.3T and 12.4T

12.4(4)T

PPPoE Circuit-Id Tag Processing

The PPPoE Circuit-Id Tag Processing feature provides a way to extract a Circuit-Id tag from the digital subscriber line (DSL) as an identifier for the authentication, authorization, and accounting (AAA) access request on an Ethernet interface, thereby simulating ATM-based broadband access, but using cost-effective Ethernet instead. The tag is useful for troubleshooting the network, and is also used in RADIUS authentication and accounting processes.

PPPoE Circuit-Id Tag Processing

12.3(4)T

PPPoE Relay

The PPPoE Relay feature enables an L2TP access concentrator (LAC) to relay active discovery and service selection functionality for PPP over Ethernet (PPPoE), over a Layer 2 Tunneling Protocol (L2TP) control channel, to an L2TP network server (LNS) or tunnel switch (multihop node).

Enabling PPPoE Relay Discovery and Service Selection Functionality

12.3(4)T

PPPoE Service Selection

The PPPoE Service Selection feature uses service tags to enable a PPP over Ethernet (PPPoE) server to offer PPPoE clients a selection of services during call setup. The customer chooses one of the services offered, and the service is provided when the PPPoE session becomes active.

Offering PPPoE Clients a Selection of Services During Call Setup

12.3(2)T

Configuration Limit Removal and ATM Support

The Configuration Limit Removal and ATM Support feature provides two enhancements to PPP over Ethernet (PPPoE) over IEEE 802.1Q virtual local area network (VLAN) functionality:

•It removes the requirement for each PPPoE VLAN to be created on a subinterface. Removal of this requirement increases the number of VLANs that can be configured on a router to 4000 VLANs per interface.

•It adds ATM permanent virtual circuit (PVC) support for PPPoE over VLAN traffic that uses bridged RFC 1483 encapsulation.

Providing Protocol Support for Broadband Access Aggregation of PPPoE Sessions

12.3(2)T

PPPoE Session Recovery After Reload

The PPPoE Session Recovery After Reload feature enables the aggregation device to attempt to recover PPPoE sessions that failed because of reload by notifying customer premises equipment (CPE) devices about the PPPoE session failures.

Providing Protocol Support for Broadband Access Aggregation of PPPoE Sessions

12.3(2)T

DHCP Lease Limit per ATM RBE Unnumbered Interface

This feature limits the number of Dynamic Host Configuration Protocol (DHCP) leases per subinterface offered to DHCP clients connected from an ATM routed bridge encapsulation (RBE) unnumbered interface or serial unnumbered interface of the DHCP server or DHCP relay agent.

Providing Connectivity Using ATM Routed Bridge Encapsulation

12.3(11)T

Configurable MAC Address for PPPoE

This feature configures the MAC address on ATM permanent virtual circuits (PVCs) in a broadband access (BBA) group to use a different MAC address for PPP over Ethernet over ATM (PPPoEoA).

Providing Protocol Support for Broadband Access Aggregation of PPPoE Sessions

12.2.(1) DC

12.2(8)T

PPPoE Session Count MIB

This feature provides the ability to use Simple Network Management Protocol (SNMP) to monitor in real time the number of PPP over Ethernet sessions configured on permanent virtual circuits (PVCs) and on a router.

Monitoring PPPoE Sessions with SNMP

12.2(4)T
12.2(4)T3

PPPoA/PPPoE Autosense for ATM PVCs

This feature enables a router to distinguish between incoming PPP over ATM (PPPoA) and PPP over Ethernet (PPPoE) over ATM sessions and to create virtual access based on demand for both PPP types.

Preparing for Broadband Access Aggregation

and

Providing Protocol Support for Broadband Access Aggregation of PPPoE Sessions

and

Providing Protocol Support for Broadband Access Aggregation of PPP over ATM Sessions

12.2(4)B
12.2(13)T

Dynamic Subscriber Bandwidth Selection (DBS)

This feature enables wholesale service providers to sell different classes of service to retail service providers by controlling bandwidth at the ATM Virtual Circuit (VC) level. ATM Quality of Service (QoS) parameters from the subscriber domain are applied to the ATM PVC on which a PPPoE or PPPoA session is established.

Controlling Subscriber Bandwidth

12.2(2)T

DHCP Option 82 Support for Routed Bridge Encapsulation

This feature provides support for the Dynamic Host Configuration Protocol (DHCP) relay agent information option when ATM routed bridge encapsulation (RBE) is used.

Providing Connectivity Using ATM Routed Bridge Encapsulation

12.2(15)T

PPPoE Connection Throttling

This feature limits PPPoE connection requests to help prevent intentional denial-of-service attacks as well as unintentional PPP authentication loops. This feature implements session throttling on the PPPoE server to limit the number of PPPoE session requests that can be initialized from a MAC address or virtual circuit during a specified period of time.

Providing Protocol Support for Broadband Access Aggregation of PPPoE Sessions

12.2(15)T

PPPoE Profiles

The PPPoE profiles feature configures PPP over Ethernet profiles that contain configuration information for a group of PPPoE sessions.

Providing Protocol Support for Broadband Access Aggregation of PPPoE Sessions

12.2(15)B
12.3(4)T

PPPoE Session Limit per NAS Port

The PPPoE Session Limit per network access server (NAS) Port feature enables you to limit the number of PPP over Ethernet (PPPoE) sessions on a specific permanent virtual circuit (PVC) or VLAN configured on an L2TP access concentrator (LAC).

Establishing PPPoE Session Limits per NAS Port

12.2(15)B
12.2(4)T

Upstream PPPoX Connection Speed Transfer at LAC

The Upstream PPPoX Connection Speed Transfer at LAC feature allows the transfer of the upstream PPPoX session speed value at the L2TP access concentrator (LAC).

Configuring Upstream Connection Speed Transfer

12.2(13)T
12.2(15)B
12.2(33)SRC

Configuration Enhancements for Broadband Scalability

This feature reduces the amount of memory that is used per terminated PPP session by creating virtual access subinterfaces. Depending on the configuration of the source virtual template, virtual access subinterface may be available. This feature also introduces a command to determine if a virtual template is compatible with virtual access subinterfaces.

Preparing for Broadband Access Aggregation

12.2(13)T

Subscriber Service Switch

The Subscriber Service Switch feature provides flexibility on where and how many subscribers are connected to available services and how those services are defined. The primary focus of the Subscriber Service Switch is to direct PPP from one point to another using a Layer 2 subscriber policy.

Configuring Cisco Subscriber Service Switch Policies

12.2(1)DX
12.2(2)DD
12.2(4)B
12.2(4)T
12.2(13)T

PPP over Ethernet (PPPoE) Session Limit

The PPP over Ethernet (PPPoE) Session Limit feature enables you to limit the number of PPPoE sessions that can be created on a router or on an ATM permanent virtual circuit (PVC), PVC range, virtual circuit (VC) class, or Ethernet subinterface for configuration created using Cisco IOS Release 12.2 and older releases.

Providing Session Limit Support for Legacy Configurations

12.1(1)T

PPP over ATM

PPP over ATM enables a high-capacity central site router with an ATM interface to terminate multiple remote PPP connections. PPP over ATM provides security validation per user, IP address pooling, and service selection capability.

Providing Protocol Support for Broadband Access Aggregation of PPP over ATM Sessions

12.0(7)XE
12.1(5)T
12.2(2)DD
12.2(4)B
12.2(8)T
12.2(13)T

VLAN Range

Using the VLAN Range feature, you can group VLAN subinterfaces together so that any command entered in a group applies to every subinterface within the group. This capability simplifies the configuration process and reduces command parsing.

Providing Protocol Support for Broadband Access Aggregation of PPPoE Sessions


CCDE, CCENT, Cisco Eos, Cisco Lumin, Cisco Nexus, Cisco StadiumVision, Cisco TelePresence, Cisco WebEx, the Cisco logo, DCE, and Welcome to the Human Network are trademarks; Changing the Way We Work, Live, Play, and Learn and Cisco Store are service marks; and Access Registrar, Aironet, AsyncOS, Bringing the Meeting To You, Catalyst, CCDA, CCDP, CCIE, CCIP, CCNA, CCNP, CCSP, CCVP, Cisco, the Cisco Certified Internetwork Expert logo, Cisco IOS, Cisco Press, Cisco Systems, Cisco Systems Capital, the Cisco Systems logo, Cisco Unity, Collaboration Without Limitation, EtherFast, EtherSwitch, Event Center, Fast Step, Follow Me Browsing, FormShare, GigaDrive, HomeLink, Internet Quotient, IOS, iPhone, iQuick Study, IronPort, the IronPort logo, LightStream, Linksys, MediaTone, MeetingPlace, MeetingPlace Chime Sound, MGX, Networkers, Networking Academy, Network Registrar, PCNow, PIX, PowerPanels, ProConnect, ScriptShare, SenderBase, SMARTnet, Spectrum Expert, StackWise, The Fastest Way to Increase Your Internet Quotient, TransPath, WebEx, and the WebEx logo are registered trademarks of Cisco Systems, Inc. and/or its affiliates in the United States and certain other countries.

All other trademarks mentioned in this document or website 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. (0809R)

Any Internet Protocol (IP) addresses used in this document are not intended to be actual addresses. Any examples, command display output, and figures included in the document are shown for illustrative purposes only. Any use of actual IP addresses in illustrative content is unintentional and coincidental.

© 2008 Cisco Systems, Inc. All rights reserved.