What is broadband remote access server (BRAS)?
Broadband Remote Access Server (BRAS) • BRAS are an essential part of broadband topologies to control subscriber access • BRAS is the access point for subscribers, through which they connect to the broadband network.
What is Cisco IOS XR 64-bit BNG functionality?
Added the support for Cisco IOS XR 64-bit BNG functionality. Broadband Network Gateway (BNG) is the access point for subscribers, through which they connect to the broadband network.
What is an access network provider (ANP)?
In the Access Network Provider model, a network carrier (also called the wholesaler) owns the edge network infrastructure, and provides the broadband connection to the subscriber. However, the network carrier does not own the broadband network.
Which routers are supported by the Broadband Network Gateway (BNG)?
The Broadband Network Gateway (BNG) functionality is supported on Cisco IOS XR 64-bit ASR 9000 Series Routers, in addition to the Cisco IOS XR 32-bit ASR 9000 Series Routers.
Finding Feature Information
Your software release may not support all the features documented in this module. For the latest caveats and feature information, see Bug Search Tool and the release notes for your platform and software release.
Prerequisites for the PPPoE Agent Remote-ID and DSL Line Characteristics Enhancement
It is recommended that you be familiar with the following documents before configuring this feature:
Information About the PPPoE Agent Remote-ID and DSL Line Characteristics Enhancement
Broadband DSLAM and Broadband Remote Access Server (BRAS) vendors need to provide Fast or Gigabit Ethernet-based networks as an alternative to an ATM access network, with a DSLAM bridging the ATM-DSL local loop to the Fast or Gigabit Ethernet-based broadband access network and allowing Fast or Gigabit Ethernet-based connectivity to the BRAS.
How to Configure the PPPoE Agent Remote-ID and DSL Line Characteristics Enhancement
This task describes how to configure the PPPoE Agent Remote-ID and DSL Line Characteristics Enhancement feature. When this feature is configured, BRAS will process the incoming PADR frames and send the Remote-ID field of the incoming tag to the RADIUS server as a VSA.
Configuration Examples for PPPoE Agent Remote-ID and DSL Line Characteristics Enhancement
In the following example, outgoing PADO and PADS packets will retain the incoming Vendor-Specific Circuit-ID tag:
Additional References
The following sections provide references related to the PPPoE Agent Remote-ID and DSL Line Characteristics Enhancement feature.
Feature Information for PPPoE Agent Remote-ID and DSL Line Characteristics Enhancement
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.
How to enable PPP over Ethernet?
To enable PPP over Ethernet (PPPoE) sessions on an Ethernet interface or subinterface, use the pppoe enable command in the appropriate configuration mode. To disable PPPoE, use the no form of this command.
How to define a range of ATM permanent virtual circuits?
To define a range of ATM permanent virtual circuits (PVCs), use the range pvc command in interface configuration mode or subinterface configuration mode. To delete the range of ATM PVCs, use the no form of this command.
How to assign a subscriber profile to a PPP over Ethernet?
To assign a subscriber profile to a PPP over Ethernet (PPPoE) profile, use the service profile command in BBA group configuration mode. To remove a subscriber profile assignment from a PPPoE profile, use the no form of this command.
How to specify IP address of DHCP relay agent?
To specify the IP address of an interface on the DHCP relay agent that will be sent to the DHCP server via the agent remote ID option, use the rbe nasip command in global configuration mode. To remove the specification, use the no form of this command.
How to specify delay based on PPP over Ethernet?
To specify the delay based on the PPP over Ethernet (PPPoE) tag circuit ID client, use the pppoe server circuit-id delay command in BBA group configuration mode. To remove the delay, use the no form of this command.
How to track attributes received in authorization from Radius?
To track attributes received in authorization from RADIUS, verify the permitted Network Control Program (NCP), reject the current NCP negotiation, and override the local dual-stack configuration, use the ppp ncp override local command in global configuration mode. To disable the configuration, use the no form of this command.
How to verify if IPv6 prefix is unique?
To verify if the IPv6 prefix delegation is unique using a PP-enabled interface, and to disconnect the session if the peer IPv6 prefix is duplicated, use the ppp ipv6cp address unique command in interface configuration mode. To disable the configuration, use the no form of this command.
What is the purpose of a BNG router?
The goal of the BNG architecture is to enable the BNG router to interact with peripheral devices (like CPE) and servers (like AAA and DHCP), in order to provide broadband connectivity to subscribers and manage subscriber sessions. The basic BNG architecture is shown in this figure.
What chassis is A99-RP-SE on?
A99-RP-SE and A99-RP2-SE on the Cisco ASR 9912 and the Cisco ASR 9922 chassis.
How many subscribers does BNG Smart Licensing support?
BNG Smart Licensing supports Geo redundancy and non-Geo redundancy subscriber sessions. One license supports of 8000 subscribers or a fraction of it. For example, 9000 subscribers need two licenses.
Does Cisco IOS XR 64 bit use BNG?
Unlike the Cisco IOS XR 32-bit BNG, the Cisco IOS XR 64-bit BNG does not use the BNG pie, asr9k-bng-px.pie . Instead, it uses the mini.iso or the full.iso image that combines all service packages including the BNG service package for the Cisco IOS XR 64-bit ASR9000 Series Router. Also, a .rpm package is available separately for the BNG services.
Can BNG connect to more than one DHCP server?
BNG can connect to more than one DHCP server to have fail over redundancy in the addressing process. The DHCP server contains an IP address pool, from which it allocates addresses to the CPE. During the interaction between BNG and the DHCP server, BNG acts as a DHCP relay or DHCP proxy.
