CSC BNG Workshop

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Comunidade de Suporte da Cisco - Webcast ao Vivo: ASR 9000 BNG Concept and Configuration

Transcript of CSC BNG Workshop

  • 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential Presentation_ID 1

    Comunidade de Suporte da Cisco -

    Webcast ao Vivo:

    ASR 9000

    BNG Concept and Configuration

    Bruno Novais

    High Touch Engineer

    CCIE R&S# 37673

  • 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential Presentation_ID 2

    Webcast com Especialistas em Tecnologia da Comunidade Cisco

    Especialista de hoje:

    Bruno Novais, High Touch Engineer na Cisco do Brasil

    Bruno Novais

  • 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential Presentation_ID 3

    Webcast com Especialistas em Tecnologia da Comunidade Cisco

    Especialista ajudante de hoje:

    Gustavo Coutinho, Engenheiro de Suporte da Cisco do Brasil

    Gustavo Coutinho

  • 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential Presentation_ID 4

    Obrigado por estar com a gente hoje!

    Durante a apresentao, sero feitas

    algumas perguntas para o pblico.

    D suas respostas, participe!

  • 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential Presentation_ID 5

    Obrigado por estar com a gente hoje!

    Se voc quiser baixar uma cpia da apresentao de hoje, basta

    clicar no link abaixo ou ir at a Comunidade de Suporte e buscar

    este webcast na aba Canto dos especialistas.

    Atualizar

  • 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential Presentation_ID 6

    Primeira Pergunta

    Qual sua experincia com BNG?

    a) Bsica. J tive alguns contatos, porm no entendo muito sobre a soluo em si.

    b) Eu tenho conhecimento avanado

    c) Estou em processo de aprendizado.

    d) No conheo esta soluo.

  • 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential Presentation_ID 7

    ASR 9000 BNG Concept and Configuration Bruno Novais High Touch Engineer CCIE R&S# 37673

  • 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential Presentation_ID 8

    History of Broadband: Recap ASR 9000 BNG Overview Configuration Example: PPPoE Subscriber Example: IPoE Subscriber Troubleshooting

  • 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential Presentation_ID 9

    History of Broadband: Recap ASR 9000 BNG Overview Configuration Example: PPPoE Subscriber Example: IPoE Subscriber Troubleshooting

  • 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential Presentation_ID 10

    Broadband ForumProvider Networks Segmentation POP Point Of

    Presence

    Broadband Forum Divides Networks Entities in Three

    Groups

    Content Providers

    ISP

    Corporate Networks

    Customer

    Premises NAP NSP

    Network

    Access

    Provider

    Network

    Service

    Provider

    Provides connectivity to Service Providers

    Encompasses:

    Access network (DSL or else) Aggregation and core networks

    Implements services:

    Internet Connectivity

    Business Access

    Application specific content hosting

    Handles authentication and address assignment

    Can Be Same Operator

  • 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential Presentation_ID 11

    Broadband.Once Upon a Time

    NAP core network can be ATM end to end or a combination of ATM and IP based interfaces toward NSPs (ATM VC terminated on a Broadband Access Server (BAS) in NAP)

    PPP is subscriber access protocol with PPPoA stack ATM VC (typically PVC) required for each subscriber PPP session toward a NSP service

    PPP can be terminated at NSP or inside NAP network depending on architecture

    Content Providers

    ISP

    Corporate Networks

    ATMoDSL ATM ATM or FR or IP

    PVC PPP

    PPPoA PPPoA/L2TP/IP

    PPP PPP/IP

    L2TP PPP

    IP

    BRAS

  • 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential Presentation_ID 12

    Point To Point Protocol (PPP)

    What is PPP?

    Its a Data Link protocol originally designed to operate over point to point serial links. Extended to operate in Broadband Environments with PPPoX protocols (PPPoE, PPPoA)

    Why is it special?

    It natively embeds functionalities like: Keepalives

    Reliable link

    Maximum Receive Unit (MRU) negotiation

    Compression

    Authentication, Authorization, Accounting

    Link aggregation and fragmentation

    Multi Protocol Support

    Peer address assignment

    ...more...

    PPP

    Appealing from a subscriber management perspective

    Defined in RFC1661

  • 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential Presentation_ID 13

    Eth, FR, POS

    Broadband Architecture Evolution

    Adoption of PPPoE, as replacement of PPPoA, as subscriber access protocol

    PPPoE can multiplex several PPP sessions over any point to point or multipoint transport

    Each End Client Station can start PPP session (CPE in bridged mode)

    => Simultaneous Multi Provider access supported

    PPPoE session can also be started by CPE (CPE in routed mode)

    Ethernet in First Mile and Aggregation network

    Optimized multicast distribution and QoS in aggregation network

    distributed Service Insertion (Multi Edge)

    Virtualized Layer-2 Services (with VLANs)

    From BRAS to Broadband Network Gateway (BNG) at IP Edge

    IP

    ATMoDSL, EFM

    Ethernet (.1Q, QnQ,.1ad), EoMPLS

    PPPoE

    BNG

    PPP

    L2TP, VPN, Vlan

    Aggregation

    Ethernet

  • 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential Presentation_ID 14

    PPP over Ethernet - PPPoE

    Access Aggregation

    PPP session started by CPE or end user CPE can operate in routed or bridge mode

    CPE in routed mode: runs NAT to support multiple users

    PPPoE supports multiple access technologies

    Access Technology can still be DSL

    Aggregation is ATM or Ethernet

    Defined in RFC2516

    Ethernet

    or ATM

    PPP assumes Point to Point connectivity Ethernet is a broadcast Technology

    PPPoE provides tools required to carry PPP over a broadcast network

    PPPoE requires a discovery phase before PPP negotiation can start

    Same or Different interface per CPE

    PPPoE flavor depends on interface type

    ATM interface: PPPoEoA

    Main Ethernet: PPPoEoE

    dot1Q Eth. Subintf: PPPoEoVLAN

    QnQ Subintf: PPPoEoQnQ

  • 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential Presentation_ID 15

    PPPoE Discovery

    PADI

    PADO

    PADR

    PADS

    Host sends a PPPoE Active Discovery Initiation (PADI)

    PADI is MAC broadcast frame

    Edge device(s) sends a PPPoE Active Discovery Offering (PADI)

    PADO is MAC unicast Frame to originating station

    Several PPP edge devices may be present

    Host selects an edge device and sends it a PPPoE Active Discovery Request

    PADR is MAC unicast to selected edge device

    Edge devices allocates a unique SessionID and sends it to host via PPPoE Active Discovery Session-confirmation (PADS)

    PADS is MAC unicast to selected edge device

  • 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential Presentation_ID 16

    Segunda Pergunta

    Qual o 1 pacote utilizado no PPPoE Discovery?

    a) PADI

    b) PADR

    c) DHCP

    d) Discovery.

  • 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential Presentation_ID 17

    PPP Operations

    PPP is comprised of three main components:

    A Link Control Protocol (LCP) for establishing, configuring, and testing data-link (or subscriber) connection

    - authentication (if required) also part of LCP

    A family of Network Control Protocols (NCPs) for establishing and configuring different network-layer protocols

    A method for encapsulating multi-protocol datagrams -> based on HDLC

    Configure Request

    Configure Ack/Nack

    Configure Request

    Configuration Ack/Nack

    ...

    (Authentication Phase) Optional: Only performed if authentication negotiated during configuration exchange

    LCP is Open

    PPP Session Establishment

    Activation of all supported Network Protocols

    Each protocol will have its CP phase (e.g. IP)

    For IP, IPCP phase includes peer address assignment, if negotiated

    LCP phase

    NCP phase

    IPCP Configure Request

    IPCP Configure Ack/Nack

    IPCP Configure Request

    IPCP Configuration Ack/Nack

    ...

    IPCP is Open

    Data Exchange Link is established Data exchange can start

    Negotiation of data link parameters: MRU, Authentication, keepalives, compression...

  • 2010 Cisco and/or its affiliates. All rights reserved. Cisco Confidential Presentation_ID 18

    Evolution to all IPoE

    IP

    BNG

    Aggregation

    DSL

    ATM

    RFC2684

    Ethernet

    IP

    PPPoE

    PPP

    EFM Phy

    Ethernet

    IP

    PPPoE

    PPP

    Access Technology ATM o DSL EFM (EoDSL, PON, PTP) EFM (EoDSL, PON, PTP)

    Subscriber Access Protocol

    PPP IP PPP

    Access Technology Dependent

    Protocol Stack

    Subscriber Access Protocol Dependent

    Protocol Stack

    First time introduction of Ethernet as L2 Protocol over DSL

    Access Node becomes Ethernet aware even on first