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VPN - Virtual Private Network


Layer-2 VPN MPLS   Layer-2 VPN MPLS

                                     Rosmida Syarif Edvian
Topik bahasan




                - Konsep Layer-2 VPN over MPLS

            - Virtual Private Wire Service (VPWS)

            - Virtual Private LAN Service (VPLS)
Karakteristik Layer 3 dan Layer 2



               Layer 3 VPN                     Layer 2 VPN
     1. Forwarding Berbasis “paket’   1. Forwarding berbasis Frame
        Contoh : IP                      Contoh : DLCI, VLAN, VPI/VCI

     2. Spesifik IP                   2. Mendukung Multiprotocol
     3. Contoh :                      3.Contoh :
       RFC 2547bis VPM                  Frame Relay
       (BGP/MPLS-VPN)                   ATM
                                        Ethernet
Konsep L2 VPN


                              rt5                       rt2
                                             dlci:201
                                  dlci:506
                           dlci:504                dlci:203

                                    SB



         rt1
                                                                     dlci:605    rt6
                dlci:102                                       SC
          dlci:103                       Frame Relay Network
                                                                      dlci:604
                                                                     dlci:302     rt3
           dlci:405
                      SA
               dlci:406                                             dlci:301
         rt4


       Layer-2 VPN tradisional berbasis pada teknologi circuit.
         Hanya menggunakan virtual circuit untuk membuat koneksi
          antar site VPN.
         Menyediakan fleksibelitas yang lebih baik daripada leased line
Kekurangan L2 VPN Tradisional


     service provider mulai mengganti infrastruktur Frame Relay atau
     ATM dengan infrastruktur IP

         Kekurangan
           Informasi kontrol yang terlalu kompleks.
           Pekerjaan konfigurasi yang terlalu banyak
           Sistem harus sharing dengan teknologi L2 yang sama


         L2 VPN MPLS mengatasi semua kekurangan tersebut
         dengan teknologi berikut :
           Solusi 1: Teknologi Tunnel
           Solusi 2: Pre-provision
           Solusi 3: IP Backbone
Skenario L2 VPN MPLS


                                       rt5                       rt2

                                                    dlci:201
                                             dlci:506
                                       dlci:504                dlci:203




         rt1
                                                                                       rt6
                                                                           dlci:605
                    dlci:102
          dlci:103
                                                                            dlci:604

                                                                            dlci:302    rt3
               dlci:405
                                                                          dlci:301
         rt4
                 dlci:406
                                   Tunnel
                               Emulated Virtual Circuit

    Solusi ini memberikan skalabilitas dan fleksibelitas yang lebih
    baik bagi provider.
Konsep Signaling L2 VPN
Konsep



     Signaling sangat berhubungan dengan 3 teknologi berikut :

          Tunnel Signaling

          VC Signaling

          VPN Topology Discovery
Tunnel Signaling


      Tunnel Signaling adalah teknologi yang digunakan untuk
      membangun tunnel.


      Beberapa teknologi yang digunakan (tidak hanya dalam L2
      VPN):                        PE              PE
       MPLS Tunnel
           LDP/CR-LDP
           RSVP-TE

       Traditional Tunnel
           L2TP                                P
           GRE
           IPSEC

                                           PE
VC Signaling


      VC signaling adalah teknologi yang digunakan untuk
      membangun emulated VC antar PE.
                                                                  CE

      Teknologi VPWS                                                Dlci 290, name vc1
       Solusi Martini (LDP)
       Solusi Kompella (BGP)         I bind vc1 with label1000             PE


      Teknologi VPLS
                                                         P
       Solusi Martini (LDP)                              I bind vc1 with label2000
       Solusi yang lain (LDP atau BGP)
                                          PE   Dlci 190, name vc1


                                                       CE
VPN Topology Discovery


     VPN topology discovery adalah mendistribusikan informasi
     site yang membentuk VPN


     Kebanyakan implementasi menggunakan : BGP


                                 VPLS V1



          A                                VPLS V1   C
                       VPLS V1



                             B
Martini Signaling
Martini MPLS L2 VPN


     Solusi Martini :


       Teknologi Tunnel Signaling : LDP

       Teknologi VC Signaling : LDP Remote Peer
Martini Signaling

      Fungsi utama signaling Martini ;

        Tunnel signaling
              LDP digunakan untuk membangun tunnel MPLS antar PE
               (Dibahas pada Modul MPLS)



        VC signaling
              Untuk identifikasi setiap VC (disebut VC-ID)



                        (1,1000;PE1)

         VC-ID:1                                (1,2000;PE2)
                                                                     VC-ID:1
         DLCI:100 PE1                                          PE   DLCI:200


        CE
                                          P                              CE
VC Signaling


   Elemen VC Signaling :




   VC Type: ATM, FR, Ethernet, HDLC, PPP, dll
   C = 1 : berarti control word digunakan pada VC
          Membawa informasi payload Layer-2
   VC Info Length : panjang VCID
   Group ID: untuk mencreate suatu group VC
   VC ID: identitas untuk VC tertentu
   Interface parameters: parameter interface tertentu, seperti MTU.
VC Signaling : Pseudowire VC Type
VC Signaling : Konfigurasi VC-ID


  VC ID dalam satu VPN : harus SAMA
  VC ID antar PE yang berpasangan : harus unik




                        Ethernet over MPLS
VC Signaling - MTU : Maximum Transmission Unit



 Setting MTU pada ke dua attachment circuits yang terhubung
 melalui pseudowire (Virtual Circuit) harus sama.

 Paket yang melebihi Core MTU akan di-drop

 Formula untuk menghitung kebutuhan MTU pada Core :

                                                    EoMPLS Packet Format
  Core MTU >= Edge MTU +
              Transport Header +
              AToM Header +
              (MPLS Label Stack * MPLS Header Size)
VC Signaling - MTU : Maximum Transmission Unit


     Kebutuhan MTU untuk EoMPLS
Martini Signaling : EoMPLS

                                          10.0.0.1                            10.0.0.2
   Site 1                                                   Tunnel LSP                                         Site 2
                       VLAN/100                                                            VLAN/200
              CE1          Eth/10          PE1                                PE2           Eth/20
                                                                                                         CE2
       Configuration                                                              Configuration
       Interface: Eth/10 VLAN/100                                                 Interface: Eth/20 VLAN/200
       VC ID (=L2-FEC): 3001                                                      VC ID (=L2-FEC): 3001
       Map Eth/10 VLAN/100 VCID 3001                                              Map Eth/20 VLAN/200 VCID 3001
       VC label: 4000                                                             VC label: 2000

                                                                                    VCID     In                 Out
                                                                                    3001     VC label 2000      Eth/20 VLAN/200
                                                                                             Eth/20 VLAN/200    ?

VCID     In                 Out
3001     VC label 4000      Eth/10 VLAN/100
         Eth/10 VLAN/100    2000




                                                                                   VCID     In                 Out
                                                                                   3001     VC label2000       Eth/20 VLAN/200
                                                                                            Eth/20 VLAN/200    4000


                                                         PW (2 VC) setup !
                              Eth-Frame
                                                     Eth-Frame 2000 100 L2H
                                                                                    Eth-Frame
Enkapsulasi Data L2 VPN
Enkapsulasi Data L2 VPN


     Secara umum, data Layer-2 dikirimkan pada jaringan
     backbone dengan 3 jenis enkapsulasi :


       Tunnel Label
          Berisi informasi yang dibutuhkan untuk mengirimkan paket Layer-2
           pada jaringan backbone


       VC Label
          Digunakan untuk membedakan Virtual Circuit pada suatu tunnel.


       Control Word
          berisi atribut payload L2 (optional)
Enkapsulasi Data L2 VPN : Label Stacking
Enkapsulasi Data L2 VPN : Control Word




  Control Word bersifat optional
  Flags— protocol specific
      (FR;FECN, BECN, C/R, DE, ATM;CLP, EFCI, C/R, dll)

  Length— dibutuhkan ketika frame < interface
  MTU
  Sequence number— urutan paket
Enkapsulasi : Ethernet Over MPLS
L2 VPN Data Flow
L2 Data Flow Model



     L2 VPN MPLS dapat dibedakan atas 2 service :

       VPWS: Virtual private Wire service

       VPLS: Virtual private LAN service
L2 VPN MPLS : Metro Ethernet Services

                                                                                                      CE
                                                               L2/3                       UNI
                                                               CE      UNI
                                              EPL                               EVC1                  CE
                                                                                                UNI
    L2 VPN MPLS                               (EWS)
                                                                CE    UNI
                                                                                EVC2
                                        Private Line Service
                                                                                             UNI      CE
                                                                      UNI       EVC3
                                                               L2/3
           PtP EVC
           (VPWS, PW, ELS, VLL)                                   VLAN 1
                                                                  VLAN 2                        UNI
                                                                                                      CE
                                              ERS              L3 VLAN 3
                                                               CE                  EVC1
                                                                                                      CE
                                                                                                UNI
                                                                                      EVC2
                      A EVC                                     Multiplexed        EVC3            ISP POP
                                                                   UNI                              Router
                                                                                          UNI

                  Service Interface                             CE                                    CE
                                              LAN Extension            UNI
              Physical port/                                                              UNI
            Logical port (VLAN)
                                              (EMS)            L2/3
                                                                                                      CE

           MPtMP EVC                                                           EVC1
                                                                CE                                    CE
                                                                                             UNI
           (VPLS, E-LAN Service, TLS)                                  UNI
                                                                                ISP POP
                                                                CE               Router
                                                                                                      CE
                                              ERMS                     UNI                UNI
                    A EVC
                                                                                                      CE

                                                               L3              EVC1
                                                               CE                                     CE
                                                                                             UNI
                                                                                EVC2
                                                               Service Multiplexed UNI
L2 VPN Model
Perbandingan L2 VPN
VPWS - Virtual Private Wire Service
VPWS Reference Model


 Pseudowire (PW) :
   koneksi antar 2(dua) perangkat PE yang menghubungkan 2(dua)
    Attachment Circuits(AC)
VPWS Transports : Customer Perspective
VPWS: Customer Perspective


  Koneksi point-to-point antar node Provider Edge (PE)
  Kastamer merasakan sama seperti L2 PVC eksisting (seperti : point-to-point Frame
  Relay)
  Service provider memforwardkan frame berdasarkan informasi Layer-2 ( DLCI, VLAN
  Tag, VPI/VCI, dll)
L2VPN: Service Interworking
Customer Perspective



     MPLS Service Inter-working
       Service inter-working mengizinkan perangkat CE untuk
       mempertukarkan data menggunakan teknologi layer-2 yang
       berbeda.
VPWS Transport
ATOM - Any Transport over MPLS



   ATOM : menyediakan pengiriman paket Layer-2 untuk koneksi
   point-to-point

   Enkapsulasi Layer 2 pada jaringan MPLS:

      Ethernet
      Frame Relay
      ATM – AAL5, Cell Mode
      PPP
      Cisco HDLC
      SONET
VPWS EoMPLS
Ethernet over MPLS




                                                                      ISP C

                                            MPLS Network                          ISP A
             Enterprise
                LAN


                                  PE                            PE                  ISP B
             ISP 2
                             PE                                  PE




     ISP 1
                                       PE                  PE
                     ISP 3                                                    Enterprise
                                                                                 LAN



    2 tipe frame Ethernet yang didukung oleh Ethernet over MPLS:
    1. Ethernet frames
    2. VLAN frames (IEEE 802.1q)
VPWS FRoMPLS
Frame Relay over MPLS



                                                                     Any Transport over
                                                                       MPLS (AToM)
                                                                           Tunnel

                                           MPLS
                                         Backbone



                      PE                                        PE
                           Virtual Leased Line   DS-TE Tunnel
                             (DS-TE + QoS)



     Frame Relay
                                                                                   Frame Relay


                                       Frame Relay DLCI




   CPE Router, FRAD
                                                                                CPE Router, FRAD
ATM over MPLS



                                                                Any Transport over
                                                                  MPLS (AToM)
                                                                      Tunnel

                                      MPLS
                                    Backbone



                 PE                                        PE
                      Virtual Leased Line   DS-TE Tunnel
                        (DS-TE + QoS)



       ATM
                                                                                     ATM


                                 ATM Virtual Circuits




    CPE Router
                                                                              CPE Router
PPP, Cisco HDLC over MPLS




                                           MPLS Backbone



        Serial Link
                                                                            Serial Link
                      PE                                               PE
                                   Virtual Leased    DS-TE Tunnel
                                   Line (DS-TE +
                                        QoS)
   CE                                                                                     CE
                       Serial IP
                      or PPP or                                Serial IP
                      HDLC over                               or PPP or
                        MPLS                                  HDLC over
                                                                MPLS
VPLS : Virtual Private LAN Service
VPLS : Virtual Private LAN Services


   Arsitektur yang menyediakan layanan Ethernet Multipoint Services
   (EMS) pada jaringan MPLS
VPLS: Customer View




     Single bridge domain
     Single subnet
     MAC address learning and forwarding
VPLS : Customer Perspective




                      Virtual Switch




    Konfigurasi Multipoint-to-multipoint
    Forwarding frame berdasarkan MAC address
    Menggunakan Virtual Switching Instances (VSI) untuk
    pemisahan kastamer
Komponen VPLS



                   VSI   Attachment circuit




     Pseudo Wire
Komponen VPLS


    AC: Attachment circuit
      Merupakan link antara CE dan PE
      Akhir dari AC hanya dapat berupa interface Ethernet


    PW : Pseudo wire,
      Koneksi virtual antar VSI pada dua PE
      PW terdiri dari 2 unidirectional virtual circuits (VC)


    Tunnel : MPLS Tunnel, digunakan untuk membawa PW antar PE

    VSI: Virtual switch instance,
      Berfungsi sebagai Ethernet Switch dari VPLS instance pada PE
      Memforwardkan frame L2 berdasarkan MAC address dan VLAN tag.
Operasi VPLS




         Control Plane

         Data Plane
VPLS: Control Plane (1)

Martini-signaling                                            Gunakan vc-label 102
                                                           u/VCID 1000 ketika kirim ke
                                                                     saya
          VPN A
          Site-2                                  VCID 1000          PE-1
                                                 vc label 102                               VPN A
                    CE-2                                                                      Site-1
                                   PE-2

                                                           VCID 1000                     CE-1
                                                          vc label 103

       Gunakan vc-label 103
     u/VCID 1000 ketika kirim ke
               saya


                                          CE-3
                                                 VPN A

                                                 Site-3

Site 1, 2, 3 dan PE1, PE2, PE3 full-mesh VPLS instance를
VPLS Instance (VSI) dalam satu VPN mempunyai VC-ID yang unik.

1.    Setup VC Label menggunakan sesi LDP
VPLS: Control Plane (2)

Martini-signaling


             VPN A
             Site-1                                          PE-2      VPN A
                      CE-1                                               Site-2
                             PE-1

                                                                    CE-2




                                                      CE-3

                                              VPN A
                                               Site-3


    1.1 Setup VC Label 102 dan VC Label 103
        VCID = 1000
VPLS: Control Plane (3)

 Martini-signaling
                                                              Gunakan vc-label 201
                                                            u/VCID 1000 ketika kirim ke
                                                                      saya
           VPN A
           Site-2                                 VCID 1000           PE-1
                                                 vc label 201                                VPN A
                     CE-2                                                                      Site-1
                                   PE-2

                                                                                          CE-1



           Gunakan vc-label 301
         u/VCID 1000 ketika kirim ke
                   saya



                                          CE-3
                                                 VPN A
                                                   Site-3



  1. 2 Setup VC Label 201 dan VC Label 301
VPLS: Control Plane (4)


 Martini-signaling
                                                           VCID 1000
                                                           Eth10, p3/vc-lsp201, p4/vc-lsp301


           VPN A
           Site-2                                    p3
                                                               PE-1              VPN A
                     CE-2                                                          Site-1
                            PE-2
                                                                   Eth10
                                                          p4                 CE-1




                                   CE-3
                                          VPN A
                                            Site-3
VPLS: Control Plane (5)

 Martini-signaling
                                                                             VCID 1000
                                                                             Eth10, p3/vc-lsp201, p4/vc-lsp301
                                        PE-2
            VPN A                              p1
                               Eth20
            Site-2                                                    p3
                                                                                 PE-1               VPN A
                     CE-2              p2                                                             Site-1
                                                                                     Eth10
                                                                           p4                  CE-1
VCID 1000
Eth20, p1/vc-lsp102, p2/vc-lsp401
                                                      PE-3

                                               p6                p5


                                                         Eth30             VCID 1000
                                                                           Eth30, p5/vc-lsp103, p6/vc-lsp104

                                               CE-3
                                                      VPN A
    FINISH !!!                                          Site-3

          VPLS untuk VPN-A selesai disetup antara PE1, PE2, PE3
          VCID = 1000
VPLS: Data Plane (1)

           M2               SA DA
                                     PE-2
                                                                                                     M1
       VPN A           IP   M2 M1
                               M1           p1
       Site-2                                                       p3
                            Eth20                                                PE-1            VPN A
                CE-2                p2                                                             Site-1
                                                                                    Eth10
                                                                          p4                 CE-1


  VSI for VPLS 1000                                PE-3
     MAC         Interface
                                            p6                p5
                   Eth20
                P1/vc-lsp102
                                                      Eth30
                P2/vc-lsp401
                                            CE-3
                                                   VPN A
                                                     Site-3                         Source MAC address
  PE2 : Port 20                                                                     Destination MAC address
        Ethernet frame                                             IP    M2 M1
                                                                            M1      Ethernet frame
        VPLS 1000
VPLS: Data Plane (2)


                   M2           IP     M2 M1
                                          M1
                                                                                                       M1
        VPN A                                  p1
                           PE-2
        Site-2                                                             p3
                        Eth20                                                        PE-1          VPN A
                 CE-2             p2                                                                 Site-1
                                                                                        Eth10
                                                                                p4              CE-1


    VSI for VPLS 1000                                 PE-3
     MAC          Interface
                                               p6                p5
     M2             Eth20
                 P1/vc-lsp102
                                                         Eth30
                 P2/vc-lsp401
                                               CE-3                   M3
                                                      VPN A
1. Pada PE2
                                                        Site-3
1.1 Source MAC Learning :
    VPLS 1000
    source MAC address SA=M2 : Eth20
VPLS: Data Plane (3)



                    M2
                                                                            Tunnel                                  M1
         VPN A                                  p1       IP   M2 M1 102 Label L2H
                               PE-2
         Site-2                                                               p3
                           Eth20                                                          PE-1                  VPN A
                  CE-2                p2                                                                          Site-1
                                                                                                Eth10
                                      Tunnel                                         p4                      CE-1
                     IP   M2 M1 401 Label L2H


                                                       PE-3
VSI for VPLS 1000
   MAC          Interface                       p6                p5

   M2             Eth20
              P1/vc-lsp102                                Eth30
              P2/vc-lsp401                                                                                   VC Label
                                                CE-3                   M3                                    Tunnel Label
                                                       VPN A
                                                                                                             Transport Header
1.2 Destination MAC lookup :                             Site-3                                 Tunnel
                                                           IP M2 M1                       102    Label L2H   MPLS frame
    VPLS 1000.
    Destination MAC = M1이 (Unknown frame),
    PE flooding, (replication) p1/vc-lsp102 PE1, p2/vc-lsp 401 PE3
VPLS: Data Plane (4)                                                    VSI for VPLS 1000
                                                                             MAC              Interface
                                                                                                Eth10
                                                                             M2             P3/vc-lsp201
                                                                                            P4/vc-lsp301
                   M2
                                                                                                             M1
        VPN A                                 p1
                           PE-2                                                    Tunnel
        Site-2                                                IP   M2 M1       102 Label L2H

                        Eth20                                           p3                               VPN A
                 CE-2                p2                                                                    Site-1
                                                                                              Eth10
                                                                                  p4                  CE-1


                                                   p6 PE-3

                                IP    M2 M1
                                                   Tunnel
                                              401 Label L2H   p5
                                                                                       PE-1
                                                                             VSI for VPLS 1000
2. Pada PE1 dan PE3:                          Eth30
                                                                               MAC               Interface
   VPLS 1000 : vc-label lookup
                                     CE-3                          M3                              Eth30
2.1 Source MAC learning:                   VPN A
                                                                                               P5/vc-lsp103
    MPLS label (POP)                         Site-3
                                                                                  M2           P6/vc-lsp104
    PE1 :source MAC address : M2, vc-label 102
    PE1 : M2 : vc-label 201
    PE3 : idem
VPLS: Data Plane (5)
                                                                      VSI for VPLS 1000
                                                                           MAC                Interface
                                                                                                Eth10
                                                                               M2           P3/vc-lsp201
                                                                                            P4/vc-lsp301
                   M2
                                                                                                               M1
        VPN A                               p1
                           PE-2
        Site-2                                                            p3
                        Eth20
                                                                                           IP   M2 M1      VPN A
                 CE-2             p2                                                                         Site-1
                                                                                                Eth10
                                                                                    p4                  CE-1


                                                 p6 PE-3

                                                                p5
                                                                                         PE-1

                                       IP   M2 M1          Eth30          VSI for VPLS 1000
                                                                                MAC               Interface
                                            CE-3                     M3                             Eth30
                                                     VPN A
                                                                                                P5/vc-lsp103
2.2 Destination MAC lookup:                            Site-3
                                                                                    M2          P6/vc-lsp104
    DA=M1
    Port flooding
VPLS: Data Plane (6)                                             VSI for VPLS 1000
                                                                      MAC                Interface
                                                                                           Eth10
                                                                          M2           P3/vc-lsp201
                                                                                       P4/vc-lsp301
                   M2
                                                                                                               M1
        VPN A                          p1
                           PE-2
        Site-2                                                       p3
                        Eth20
                                                                                       M2 M1       IP      VPN A
                 CE-2             p2                                                                         Site-1
                                                                                           Eth10
                                                                               p4                       CE-1


                                            p6 PE-3

                                                           p5
                                                                                    PE-1

                                                      Eth30          VSI for VPLS 1000
                                                                           MAC               Interface
                                       CE-3                     M3                             Eth30
3. M1 reply:                                    VPN A
                                                                                           P5/vc-lsp103
   Site station 1이 reply                          Site-3
                                                                               M2          P6/vc-lsp104
   DA=M2, SA=M1
VPLS: Data Plane (7)
                                                             VSI for VPLS 1000
                                                                   MAC              Interface
                                                                   M1                 Eth10
                                                                   M2           P3/vc-lsp201
               M2                                                               P4/vc-lsp301
                                                                                                   M1
    VPN A                          p1
                       PE-2
    Site-2                                                       p3 M2 M1      IP
                    Eth20                                                                       VPN A
             CE-2             p2                                                                  Site-1
                                                                                    Eth10
                                                                        p4                  CE-1


                                        p6 PE-3

                                                       p5
                                                                             PE-1

                                                  Eth30           VSI for VPLS 1000
                                                                     MAC              Interface
                                   CE-3                     M3                          Eth30
 4. Pada PE1                                VPN A
                                                                                    P5/vc-lsp103
                                              Site-3
 4. 1 Source MAC learning:                                              M2          P6/vc-lsp104
    Port 10
    Source MAC address SA=M1
VPLS: Data Plane (8)
                                                                  VSI for VPLS 1000
                                                                           MAC              Interface
                                                                           M1                 Eth10
                                                                           M2           P3/vc-lsp201
                 M2                                                                     P4/vc-lsp301
                                                                                                           M1
      VPN A                          p1
                         PE-2           Tunnel
                                     L2H Label   201 M2 M1        IP
      Site-2                                                          p3
                      Eth20                                                                             VPN A
               CE-2             p2                                                                        Site-1
                                                                                            Eth10
                                                                                p4                  CE-1


                                          p6 PE-3

                                                            p5
                                                                                     PE-1

                                                      Eth30            VSI for VPLS 1000
                                                                             MAC              Interface
                                      CE-3                       M3                             Eth30
                                                 VPN A
                                                                                            P5/vc-lsp103
                                                   Site-3
                                                                                M2          P6/vc-lsp104
 4.2 Destination MAC lookup:
     M2 : P3/vc-lsp201
VPLS: Data Plane (9)
                                                                            VSI for VPLS 1000
                                                                                     MAC              Interface
                                                                                     M1                 Eth10
                                                                                     M2           P3/vc-lsp201
          M2                               PE-2                                                   P4/vc-lsp301
                                                                                                                     M1
       VPN A           M2 M1     IP               p1
       Site-2                                                                   p3
                         Eth20                                                                                    VPN A
                CE-2                  p2                                                                            Site-1
                                                                                                      Eth10
                                                                                          p4                  CE-1


                                                       p6 PE-3
   VSI for VPLS 1000
      MAC          Interface                                          p5
                                                                                               PE-1
      M2             Eth20
      M1          P1/vc-lsp102                                   Eth30           VSI for VPLS 1000

                  P2/vc-lsp401                                                         MAC              Interface
                                                  CE-3                     M3                             Eth30
                                                           VPN A
                                                                                                      P5/vc-lsp103
                                                             Site-3
                                                                                          M2          P6/vc-lsp104
 5. Pada PE2 :
    SA=M1: P1/vc-lsp102
    DA=M2 : Eth20
VPLS: Data Plane (10)
                                                                    VSI for VPLS 1000
                                                                             MAC              Interface
                                                                             M1                 Eth10
                                                                             M2           P3/vc-lsp201
         M2                        PE-2                                      M3           P4/vc-lsp301
                                                                                                             M1
      VPN A                               p1
      Site-2                                                            p3
                      Eth20                                                                               VPN A
               CE-2           p2                                                                            Site-1
                                                                                              Eth10
                                                                                  p4                  CE-1


                                               p6 PE-3
  VSI for VPLS 1000
     MAC          Interface                                   p5
                                                                                       PE-1
     M2             Eth20
     M1          P1/vc-lsp102                            Eth30           VSI for VPLS 1000

     M3          P2/vc-lsp401                                                  MAC              Interface
                                          CE-3                     M3          M3                 Eth30
                                                   VPN A
                                                                               M1             P5/vc-lsp103
                                                     Site-3
 6. Unknown frame flooding                                                     M2             P6/vc-lsp104

    VPLS 1000 : MAC entry
VPLS: Data Plane (11)
                                          VSI for VPLS 1000
                                                MAC           Interface
                                                 M1             Eth10
                                                 M2         P3/vc-lsp201
                                                 M3         P4/vc-lsp301
                                          VSI for VPLS 2000
                                                MAC           Interface
                                                 M5             Eth11
                                                 M4          P3/vc-lsp21                        Site 1
                                                 M6          P4/vc-lsp31                            M1
                                                 M7          P4/vc-lsp31                      CE1
                                                                           Eth10
        Site 2                                                  p3
          M2                                                         PE1        Eth11
                                                                                                Site 2
                 CE2       Eth20                                           p4
                                           p1                                                       M5
                                                                                              CE2
                                    PE2
        Site 1
                            Eth21
                                     p2                               p5
                                                                                          Site 3
         M4
                 CE1                                                                          M3
                                                            p6 PE3        Eth30         CE3
      VSI for VPLS 1000
          MAC            Interface                    VSI for VPLS 1000                                  Site 3
           M2              Eth20                          MAC           Interface                       M6
           M1          P1/vc-lsp102                        M3             Eth30                     CE3 M7
           M3          P2/vc-lsp401                        M1         P5/vc-lsp103
      VSI for VPLS 2000                                    M2         P6/vc-lsp104
          MAC           Interface                     VSI for VPLS 2000
           M4             Eth21                           MAC          Interface
           M5          P1/vc-lsp12                         M6            Eth31
           M6          P2/vc-lsp32                         M7            Eth31
           M7          P2/vc-lsp32                         M5         P5/vc-lsp13
                                                           M4         P6/vc-lsp23
VPLS: Data Plane (12)
                                               VSI for VPLS 1000
                                                     MAC           Interface
                                                      M1             Eth10
                                                      M2         P3/vc-lsp201
                                                      M3         P4/vc-lsp301
                                               VSI for VPLS 2000
                                                     MAC           Interface
                                                      M5             Eth11
                                                      M4          P3/vc-lsp21                        Site 1
                                                      M6          P4/vc-lsp31                            M1
                                                      M7          P4/vc-lsp31                      CE1
                                                                                Eth10
        Site 2                                                       p3
          M2                IP   M2 M1                                    PE1        Eth11
                                                                                                     Site 2
                 CE2             Eth20                                          p4
                                                                                IP     M4 M5
                                                p1                                                       M5
                                                                                                   CE2
                                         PE2
        Site 1         IP    M4 M5
                                 Eth21
                                          p2                               p5
                                                                                               Site 3
         M4
                 CE1                                                                               M3
                                                                 p6 PE3        Eth30         CE3
      VSI for VPLS 1000
          MAC                 Interface                    VSI for VPLS 1000                                  Site 3
           M2                   Eth20                          MAC           Interface                       M6
           M1               P1/vc-lsp102                        M3             Eth30                     CE3 M7
           M3               P2/vc-lsp401                        M1         P5/vc-lsp103
      VSI for VPLS 2000                                         M2         P6/vc-lsp104
          MAC                Interface                     VSI for VPLS 2000
           M4                  Eth21                           MAC          Interface
           M5               P1/vc-lsp12                         M6            Eth31
           M6               P2/vc-lsp32                         M7            Eth31
           M7               P2/vc-lsp32                         M5         P5/vc-lsp13
                                                                M4         P6/vc-lsp23
Terima Kasih

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Layer-2 VPN

  • 1. VPN - Virtual Private Network Layer-2 VPN MPLS Layer-2 VPN MPLS Rosmida Syarif Edvian
  • 2. Topik bahasan - Konsep Layer-2 VPN over MPLS - Virtual Private Wire Service (VPWS) - Virtual Private LAN Service (VPLS)
  • 3. Karakteristik Layer 3 dan Layer 2 Layer 3 VPN Layer 2 VPN 1. Forwarding Berbasis “paket’ 1. Forwarding berbasis Frame Contoh : IP Contoh : DLCI, VLAN, VPI/VCI 2. Spesifik IP 2. Mendukung Multiprotocol 3. Contoh : 3.Contoh : RFC 2547bis VPM Frame Relay (BGP/MPLS-VPN) ATM Ethernet
  • 4. Konsep L2 VPN rt5 rt2 dlci:201 dlci:506 dlci:504 dlci:203 SB rt1 dlci:605 rt6 dlci:102 SC dlci:103 Frame Relay Network dlci:604 dlci:302 rt3 dlci:405 SA dlci:406 dlci:301 rt4 Layer-2 VPN tradisional berbasis pada teknologi circuit.  Hanya menggunakan virtual circuit untuk membuat koneksi antar site VPN.  Menyediakan fleksibelitas yang lebih baik daripada leased line
  • 5. Kekurangan L2 VPN Tradisional service provider mulai mengganti infrastruktur Frame Relay atau ATM dengan infrastruktur IP Kekurangan  Informasi kontrol yang terlalu kompleks.  Pekerjaan konfigurasi yang terlalu banyak  Sistem harus sharing dengan teknologi L2 yang sama L2 VPN MPLS mengatasi semua kekurangan tersebut dengan teknologi berikut :  Solusi 1: Teknologi Tunnel  Solusi 2: Pre-provision  Solusi 3: IP Backbone
  • 6. Skenario L2 VPN MPLS rt5 rt2 dlci:201 dlci:506 dlci:504 dlci:203 rt1 rt6 dlci:605 dlci:102 dlci:103 dlci:604 dlci:302 rt3 dlci:405 dlci:301 rt4 dlci:406 Tunnel Emulated Virtual Circuit Solusi ini memberikan skalabilitas dan fleksibelitas yang lebih baik bagi provider.
  • 8. Konsep Signaling sangat berhubungan dengan 3 teknologi berikut :  Tunnel Signaling  VC Signaling  VPN Topology Discovery
  • 9. Tunnel Signaling Tunnel Signaling adalah teknologi yang digunakan untuk membangun tunnel. Beberapa teknologi yang digunakan (tidak hanya dalam L2 VPN): PE PE  MPLS Tunnel  LDP/CR-LDP  RSVP-TE  Traditional Tunnel  L2TP P  GRE  IPSEC PE
  • 10. VC Signaling VC signaling adalah teknologi yang digunakan untuk membangun emulated VC antar PE. CE Teknologi VPWS Dlci 290, name vc1  Solusi Martini (LDP)  Solusi Kompella (BGP) I bind vc1 with label1000 PE Teknologi VPLS P  Solusi Martini (LDP) I bind vc1 with label2000  Solusi yang lain (LDP atau BGP) PE Dlci 190, name vc1 CE
  • 11. VPN Topology Discovery VPN topology discovery adalah mendistribusikan informasi site yang membentuk VPN Kebanyakan implementasi menggunakan : BGP VPLS V1 A VPLS V1 C VPLS V1 B
  • 13. Martini MPLS L2 VPN Solusi Martini :  Teknologi Tunnel Signaling : LDP  Teknologi VC Signaling : LDP Remote Peer
  • 14. Martini Signaling Fungsi utama signaling Martini ;  Tunnel signaling  LDP digunakan untuk membangun tunnel MPLS antar PE (Dibahas pada Modul MPLS)  VC signaling  Untuk identifikasi setiap VC (disebut VC-ID) (1,1000;PE1) VC-ID:1 (1,2000;PE2) VC-ID:1 DLCI:100 PE1 PE DLCI:200 CE P CE
  • 15. VC Signaling Elemen VC Signaling : VC Type: ATM, FR, Ethernet, HDLC, PPP, dll C = 1 : berarti control word digunakan pada VC  Membawa informasi payload Layer-2 VC Info Length : panjang VCID Group ID: untuk mencreate suatu group VC VC ID: identitas untuk VC tertentu Interface parameters: parameter interface tertentu, seperti MTU.
  • 16. VC Signaling : Pseudowire VC Type
  • 17. VC Signaling : Konfigurasi VC-ID VC ID dalam satu VPN : harus SAMA VC ID antar PE yang berpasangan : harus unik Ethernet over MPLS
  • 18. VC Signaling - MTU : Maximum Transmission Unit Setting MTU pada ke dua attachment circuits yang terhubung melalui pseudowire (Virtual Circuit) harus sama. Paket yang melebihi Core MTU akan di-drop Formula untuk menghitung kebutuhan MTU pada Core : EoMPLS Packet Format  Core MTU >= Edge MTU + Transport Header + AToM Header + (MPLS Label Stack * MPLS Header Size)
  • 19. VC Signaling - MTU : Maximum Transmission Unit Kebutuhan MTU untuk EoMPLS
  • 20. Martini Signaling : EoMPLS 10.0.0.1 10.0.0.2 Site 1 Tunnel LSP Site 2 VLAN/100 VLAN/200 CE1 Eth/10 PE1 PE2 Eth/20 CE2 Configuration Configuration Interface: Eth/10 VLAN/100 Interface: Eth/20 VLAN/200 VC ID (=L2-FEC): 3001 VC ID (=L2-FEC): 3001 Map Eth/10 VLAN/100 VCID 3001 Map Eth/20 VLAN/200 VCID 3001 VC label: 4000 VC label: 2000 VCID In Out 3001 VC label 2000 Eth/20 VLAN/200 Eth/20 VLAN/200 ? VCID In Out 3001 VC label 4000 Eth/10 VLAN/100 Eth/10 VLAN/100 2000 VCID In Out 3001 VC label2000 Eth/20 VLAN/200 Eth/20 VLAN/200 4000 PW (2 VC) setup ! Eth-Frame Eth-Frame 2000 100 L2H Eth-Frame
  • 22. Enkapsulasi Data L2 VPN Secara umum, data Layer-2 dikirimkan pada jaringan backbone dengan 3 jenis enkapsulasi :  Tunnel Label  Berisi informasi yang dibutuhkan untuk mengirimkan paket Layer-2 pada jaringan backbone  VC Label  Digunakan untuk membedakan Virtual Circuit pada suatu tunnel.  Control Word  berisi atribut payload L2 (optional)
  • 23. Enkapsulasi Data L2 VPN : Label Stacking
  • 24. Enkapsulasi Data L2 VPN : Control Word Control Word bersifat optional Flags— protocol specific  (FR;FECN, BECN, C/R, DE, ATM;CLP, EFCI, C/R, dll) Length— dibutuhkan ketika frame < interface MTU Sequence number— urutan paket
  • 26. L2 VPN Data Flow
  • 27. L2 Data Flow Model L2 VPN MPLS dapat dibedakan atas 2 service :  VPWS: Virtual private Wire service  VPLS: Virtual private LAN service
  • 28. L2 VPN MPLS : Metro Ethernet Services CE L2/3 UNI CE UNI EPL EVC1 CE UNI L2 VPN MPLS (EWS) CE UNI EVC2 Private Line Service UNI CE UNI EVC3 L2/3 PtP EVC (VPWS, PW, ELS, VLL) VLAN 1 VLAN 2 UNI CE ERS L3 VLAN 3 CE EVC1 CE UNI EVC2 A EVC Multiplexed EVC3 ISP POP UNI Router UNI Service Interface CE CE LAN Extension UNI Physical port/ UNI Logical port (VLAN) (EMS) L2/3 CE MPtMP EVC EVC1 CE CE UNI (VPLS, E-LAN Service, TLS) UNI ISP POP CE Router CE ERMS UNI UNI A EVC CE L3 EVC1 CE CE UNI EVC2 Service Multiplexed UNI
  • 31. VPWS - Virtual Private Wire Service
  • 32. VPWS Reference Model Pseudowire (PW) :  koneksi antar 2(dua) perangkat PE yang menghubungkan 2(dua) Attachment Circuits(AC)
  • 33. VPWS Transports : Customer Perspective
  • 34. VPWS: Customer Perspective Koneksi point-to-point antar node Provider Edge (PE) Kastamer merasakan sama seperti L2 PVC eksisting (seperti : point-to-point Frame Relay) Service provider memforwardkan frame berdasarkan informasi Layer-2 ( DLCI, VLAN Tag, VPI/VCI, dll)
  • 35. L2VPN: Service Interworking Customer Perspective MPLS Service Inter-working Service inter-working mengizinkan perangkat CE untuk mempertukarkan data menggunakan teknologi layer-2 yang berbeda.
  • 36. VPWS Transport ATOM - Any Transport over MPLS ATOM : menyediakan pengiriman paket Layer-2 untuk koneksi point-to-point Enkapsulasi Layer 2 pada jaringan MPLS:  Ethernet  Frame Relay  ATM – AAL5, Cell Mode  PPP  Cisco HDLC  SONET
  • 37. VPWS EoMPLS Ethernet over MPLS ISP C MPLS Network ISP A Enterprise LAN PE PE ISP B ISP 2 PE PE ISP 1 PE PE ISP 3 Enterprise LAN 2 tipe frame Ethernet yang didukung oleh Ethernet over MPLS: 1. Ethernet frames 2. VLAN frames (IEEE 802.1q)
  • 38. VPWS FRoMPLS Frame Relay over MPLS Any Transport over MPLS (AToM) Tunnel MPLS Backbone PE PE Virtual Leased Line DS-TE Tunnel (DS-TE + QoS) Frame Relay Frame Relay Frame Relay DLCI CPE Router, FRAD CPE Router, FRAD
  • 39. ATM over MPLS Any Transport over MPLS (AToM) Tunnel MPLS Backbone PE PE Virtual Leased Line DS-TE Tunnel (DS-TE + QoS) ATM ATM ATM Virtual Circuits CPE Router CPE Router
  • 40. PPP, Cisco HDLC over MPLS MPLS Backbone Serial Link Serial Link PE PE Virtual Leased DS-TE Tunnel Line (DS-TE + QoS) CE CE Serial IP or PPP or Serial IP HDLC over or PPP or MPLS HDLC over MPLS
  • 41. VPLS : Virtual Private LAN Service
  • 42. VPLS : Virtual Private LAN Services Arsitektur yang menyediakan layanan Ethernet Multipoint Services (EMS) pada jaringan MPLS
  • 43. VPLS: Customer View Single bridge domain Single subnet MAC address learning and forwarding
  • 44. VPLS : Customer Perspective Virtual Switch Konfigurasi Multipoint-to-multipoint Forwarding frame berdasarkan MAC address Menggunakan Virtual Switching Instances (VSI) untuk pemisahan kastamer
  • 45. Komponen VPLS VSI Attachment circuit Pseudo Wire
  • 46. Komponen VPLS AC: Attachment circuit  Merupakan link antara CE dan PE  Akhir dari AC hanya dapat berupa interface Ethernet PW : Pseudo wire,  Koneksi virtual antar VSI pada dua PE  PW terdiri dari 2 unidirectional virtual circuits (VC) Tunnel : MPLS Tunnel, digunakan untuk membawa PW antar PE VSI: Virtual switch instance,  Berfungsi sebagai Ethernet Switch dari VPLS instance pada PE  Memforwardkan frame L2 berdasarkan MAC address dan VLAN tag.
  • 47. Operasi VPLS Control Plane Data Plane
  • 48. VPLS: Control Plane (1) Martini-signaling Gunakan vc-label 102 u/VCID 1000 ketika kirim ke saya VPN A Site-2 VCID 1000 PE-1 vc label 102 VPN A CE-2 Site-1 PE-2 VCID 1000 CE-1 vc label 103 Gunakan vc-label 103 u/VCID 1000 ketika kirim ke saya CE-3 VPN A Site-3 Site 1, 2, 3 dan PE1, PE2, PE3 full-mesh VPLS instance를 VPLS Instance (VSI) dalam satu VPN mempunyai VC-ID yang unik. 1. Setup VC Label menggunakan sesi LDP
  • 49. VPLS: Control Plane (2) Martini-signaling VPN A Site-1 PE-2 VPN A CE-1 Site-2 PE-1 CE-2 CE-3 VPN A Site-3 1.1 Setup VC Label 102 dan VC Label 103 VCID = 1000
  • 50. VPLS: Control Plane (3) Martini-signaling Gunakan vc-label 201 u/VCID 1000 ketika kirim ke saya VPN A Site-2 VCID 1000 PE-1 vc label 201 VPN A CE-2 Site-1 PE-2 CE-1 Gunakan vc-label 301 u/VCID 1000 ketika kirim ke saya CE-3 VPN A Site-3 1. 2 Setup VC Label 201 dan VC Label 301
  • 51. VPLS: Control Plane (4) Martini-signaling VCID 1000 Eth10, p3/vc-lsp201, p4/vc-lsp301 VPN A Site-2 p3 PE-1 VPN A CE-2 Site-1 PE-2 Eth10 p4 CE-1 CE-3 VPN A Site-3
  • 52. VPLS: Control Plane (5) Martini-signaling VCID 1000 Eth10, p3/vc-lsp201, p4/vc-lsp301 PE-2 VPN A p1 Eth20 Site-2 p3 PE-1 VPN A CE-2 p2 Site-1 Eth10 p4 CE-1 VCID 1000 Eth20, p1/vc-lsp102, p2/vc-lsp401 PE-3 p6 p5 Eth30 VCID 1000 Eth30, p5/vc-lsp103, p6/vc-lsp104 CE-3 VPN A FINISH !!! Site-3 VPLS untuk VPN-A selesai disetup antara PE1, PE2, PE3 VCID = 1000
  • 53. VPLS: Data Plane (1) M2 SA DA PE-2 M1 VPN A IP M2 M1 M1 p1 Site-2 p3 Eth20 PE-1 VPN A CE-2 p2 Site-1 Eth10 p4 CE-1 VSI for VPLS 1000 PE-3 MAC Interface p6 p5 Eth20 P1/vc-lsp102 Eth30 P2/vc-lsp401 CE-3 VPN A Site-3 Source MAC address PE2 : Port 20 Destination MAC address Ethernet frame IP M2 M1 M1 Ethernet frame VPLS 1000
  • 54. VPLS: Data Plane (2) M2 IP M2 M1 M1 M1 VPN A p1 PE-2 Site-2 p3 Eth20 PE-1 VPN A CE-2 p2 Site-1 Eth10 p4 CE-1 VSI for VPLS 1000 PE-3 MAC Interface p6 p5 M2 Eth20 P1/vc-lsp102 Eth30 P2/vc-lsp401 CE-3 M3 VPN A 1. Pada PE2 Site-3 1.1 Source MAC Learning : VPLS 1000 source MAC address SA=M2 : Eth20
  • 55. VPLS: Data Plane (3) M2 Tunnel M1 VPN A p1 IP M2 M1 102 Label L2H PE-2 Site-2 p3 Eth20 PE-1 VPN A CE-2 p2 Site-1 Eth10 Tunnel p4 CE-1 IP M2 M1 401 Label L2H PE-3 VSI for VPLS 1000 MAC Interface p6 p5 M2 Eth20 P1/vc-lsp102 Eth30 P2/vc-lsp401 VC Label CE-3 M3 Tunnel Label VPN A Transport Header 1.2 Destination MAC lookup : Site-3 Tunnel IP M2 M1 102 Label L2H MPLS frame VPLS 1000. Destination MAC = M1이 (Unknown frame), PE flooding, (replication) p1/vc-lsp102 PE1, p2/vc-lsp 401 PE3
  • 56. VPLS: Data Plane (4) VSI for VPLS 1000 MAC Interface Eth10 M2 P3/vc-lsp201 P4/vc-lsp301 M2 M1 VPN A p1 PE-2 Tunnel Site-2 IP M2 M1 102 Label L2H Eth20 p3 VPN A CE-2 p2 Site-1 Eth10 p4 CE-1 p6 PE-3 IP M2 M1 Tunnel 401 Label L2H p5 PE-1 VSI for VPLS 1000 2. Pada PE1 dan PE3: Eth30 MAC Interface VPLS 1000 : vc-label lookup CE-3 M3 Eth30 2.1 Source MAC learning: VPN A P5/vc-lsp103 MPLS label (POP) Site-3 M2 P6/vc-lsp104 PE1 :source MAC address : M2, vc-label 102 PE1 : M2 : vc-label 201 PE3 : idem
  • 57. VPLS: Data Plane (5) VSI for VPLS 1000 MAC Interface Eth10 M2 P3/vc-lsp201 P4/vc-lsp301 M2 M1 VPN A p1 PE-2 Site-2 p3 Eth20 IP M2 M1 VPN A CE-2 p2 Site-1 Eth10 p4 CE-1 p6 PE-3 p5 PE-1 IP M2 M1 Eth30 VSI for VPLS 1000 MAC Interface CE-3 M3 Eth30 VPN A P5/vc-lsp103 2.2 Destination MAC lookup: Site-3 M2 P6/vc-lsp104 DA=M1 Port flooding
  • 58. VPLS: Data Plane (6) VSI for VPLS 1000 MAC Interface Eth10 M2 P3/vc-lsp201 P4/vc-lsp301 M2 M1 VPN A p1 PE-2 Site-2 p3 Eth20 M2 M1 IP VPN A CE-2 p2 Site-1 Eth10 p4 CE-1 p6 PE-3 p5 PE-1 Eth30 VSI for VPLS 1000 MAC Interface CE-3 M3 Eth30 3. M1 reply: VPN A P5/vc-lsp103 Site station 1이 reply Site-3 M2 P6/vc-lsp104 DA=M2, SA=M1
  • 59. VPLS: Data Plane (7) VSI for VPLS 1000 MAC Interface M1 Eth10 M2 P3/vc-lsp201 M2 P4/vc-lsp301 M1 VPN A p1 PE-2 Site-2 p3 M2 M1 IP Eth20 VPN A CE-2 p2 Site-1 Eth10 p4 CE-1 p6 PE-3 p5 PE-1 Eth30 VSI for VPLS 1000 MAC Interface CE-3 M3 Eth30 4. Pada PE1 VPN A P5/vc-lsp103 Site-3 4. 1 Source MAC learning: M2 P6/vc-lsp104 Port 10 Source MAC address SA=M1
  • 60. VPLS: Data Plane (8) VSI for VPLS 1000 MAC Interface M1 Eth10 M2 P3/vc-lsp201 M2 P4/vc-lsp301 M1 VPN A p1 PE-2 Tunnel L2H Label 201 M2 M1 IP Site-2 p3 Eth20 VPN A CE-2 p2 Site-1 Eth10 p4 CE-1 p6 PE-3 p5 PE-1 Eth30 VSI for VPLS 1000 MAC Interface CE-3 M3 Eth30 VPN A P5/vc-lsp103 Site-3 M2 P6/vc-lsp104 4.2 Destination MAC lookup: M2 : P3/vc-lsp201
  • 61. VPLS: Data Plane (9) VSI for VPLS 1000 MAC Interface M1 Eth10 M2 P3/vc-lsp201 M2 PE-2 P4/vc-lsp301 M1 VPN A M2 M1 IP p1 Site-2 p3 Eth20 VPN A CE-2 p2 Site-1 Eth10 p4 CE-1 p6 PE-3 VSI for VPLS 1000 MAC Interface p5 PE-1 M2 Eth20 M1 P1/vc-lsp102 Eth30 VSI for VPLS 1000 P2/vc-lsp401 MAC Interface CE-3 M3 Eth30 VPN A P5/vc-lsp103 Site-3 M2 P6/vc-lsp104 5. Pada PE2 : SA=M1: P1/vc-lsp102 DA=M2 : Eth20
  • 62. VPLS: Data Plane (10) VSI for VPLS 1000 MAC Interface M1 Eth10 M2 P3/vc-lsp201 M2 PE-2 M3 P4/vc-lsp301 M1 VPN A p1 Site-2 p3 Eth20 VPN A CE-2 p2 Site-1 Eth10 p4 CE-1 p6 PE-3 VSI for VPLS 1000 MAC Interface p5 PE-1 M2 Eth20 M1 P1/vc-lsp102 Eth30 VSI for VPLS 1000 M3 P2/vc-lsp401 MAC Interface CE-3 M3 M3 Eth30 VPN A M1 P5/vc-lsp103 Site-3 6. Unknown frame flooding M2 P6/vc-lsp104 VPLS 1000 : MAC entry
  • 63. VPLS: Data Plane (11) VSI for VPLS 1000 MAC Interface M1 Eth10 M2 P3/vc-lsp201 M3 P4/vc-lsp301 VSI for VPLS 2000 MAC Interface M5 Eth11 M4 P3/vc-lsp21 Site 1 M6 P4/vc-lsp31 M1 M7 P4/vc-lsp31 CE1 Eth10 Site 2 p3 M2 PE1 Eth11 Site 2 CE2 Eth20 p4 p1 M5 CE2 PE2 Site 1 Eth21 p2 p5 Site 3 M4 CE1 M3 p6 PE3 Eth30 CE3 VSI for VPLS 1000 MAC Interface VSI for VPLS 1000 Site 3 M2 Eth20 MAC Interface M6 M1 P1/vc-lsp102 M3 Eth30 CE3 M7 M3 P2/vc-lsp401 M1 P5/vc-lsp103 VSI for VPLS 2000 M2 P6/vc-lsp104 MAC Interface VSI for VPLS 2000 M4 Eth21 MAC Interface M5 P1/vc-lsp12 M6 Eth31 M6 P2/vc-lsp32 M7 Eth31 M7 P2/vc-lsp32 M5 P5/vc-lsp13 M4 P6/vc-lsp23
  • 64. VPLS: Data Plane (12) VSI for VPLS 1000 MAC Interface M1 Eth10 M2 P3/vc-lsp201 M3 P4/vc-lsp301 VSI for VPLS 2000 MAC Interface M5 Eth11 M4 P3/vc-lsp21 Site 1 M6 P4/vc-lsp31 M1 M7 P4/vc-lsp31 CE1 Eth10 Site 2 p3 M2 IP M2 M1 PE1 Eth11 Site 2 CE2 Eth20 p4 IP M4 M5 p1 M5 CE2 PE2 Site 1 IP M4 M5 Eth21 p2 p5 Site 3 M4 CE1 M3 p6 PE3 Eth30 CE3 VSI for VPLS 1000 MAC Interface VSI for VPLS 1000 Site 3 M2 Eth20 MAC Interface M6 M1 P1/vc-lsp102 M3 Eth30 CE3 M7 M3 P2/vc-lsp401 M1 P5/vc-lsp103 VSI for VPLS 2000 M2 P6/vc-lsp104 MAC Interface VSI for VPLS 2000 M4 Eth21 MAC Interface M5 P1/vc-lsp12 M6 Eth31 M6 P2/vc-lsp32 M7 Eth31 M7 P2/vc-lsp32 M5 P5/vc-lsp13 M4 P6/vc-lsp23