Technical Documentation

Example: Configuring MX Series Router ATM Ethernet Interworking

Consider the router topology shown in Figure 1. The MX Series router is configured as the Provider Edge 2 (PE2) router in the figure to support the ATM Ethernet IWF.

Figure 1: ATM Ethernet VLAN Interworking

Image g017428.gif

The relevant router interfaces are:

  • On CE1, the CE1–PE1 interface is at-2/0/0 with IP address 30.1.1.1/24
  • On PE1:

    • The PE1–CE1 interface is at-2/0/1 with no IP address required
    • The PE1–PE2 interface is ge-5/0/0 with IP address 20.1.1.1/24
  • On PE2:

    • The PE2–CE2 interface is ge-0/2/0 with no IP address required
    • The PE2–PE1 interface is ge-0/2/8 with IP address 20.1.1.10/24
  • CE2 interface is ge-0/0/0 with IP address 30.1.1.10/24

Note: These are not complete router configurations.

Configuring PE2 with a Layer 2 Circuit

CE1 Configuation

Configure Ethernet over ATM on the ATM interface

[edit]interfaces {at-2/0/0 {encapsulation ethernet-over-atm;atm-options {vpi 100;}unit 0 {vci 100.34;family inet {address 30.1.1.1/24;}}}}

PE1 Configuation

Configure the Layer 2 Circuit

[edit]interfaces {at-2/0/1 {atm-options {vpi 100;}unit 0 {encapsulation vlan-vci-ccc;vpi 100;vci-range 32 63;}}ge-5/0/0 {unit 0 {family inet {address 20.1.1.1/24;}family mpls;}}protocols {mpls {interface ge-5/0/0.0;}ospf {area 0.0.0.0 {interface ge-5/0/0.0;interface lo0.0 {passive;}}}ldp {interface all;}l2circuit {neighbor 10.255.171.14 {interface at-2/0/1.0 {virtual-circuit-id 100;}}}}

PE2 Configuation

Configure the Layer 2 Circuit on the MX Series Router

[edit]interfaces {ge-0/2/0 {vlan-vci-tagging;encapsulation vlan-vci-ccc;unit 0 {vlan-id 100;inner-vlan-id-range start 32 end 63;}}ge-0/2/8 {unit 0 {family inet {address 20.1.1.10/24;}family mpls;}}protocols {mpls {interface ge-0/2/8.0;}ospf {area 0.0.0.0 {interface ge-0/2/8.0;interface lo0.0 {passive;}}}ldp {interface all;}l2circuit {neighbor 10.255.171.45 {interface ge-0/2/0.0 {virtual-circuit-id 100;}}}}

CE2 Configuation

Configure Dual Tagged Ethernet Interface

[edit]interfaces {ge-0/0/0 {flexible-vlan-tagging;encapsulation flexible-ethernet-services;unit 0 {vlan-tags outer 100 inner 34;family inet {address30.1.1.10/24;}}}}

You verify your configuration on the MX Series router with the show l2circuit connections command:


user@PE2>show l2circuit connections
Layer-2 Circuit Connections:
 
    Legend for connection status (St)
    EI -- encapsulation invalid      NP -- interface h/w not present
    MM -- mtu mismatch               Dn -- down
    EM -- encapsulation mismatch     VC-Dn -- Virtual circuit Down
    CM -- control-word mismatch      Up -- operational
    VM -- vlan id mismatch           CF -- Call admission control failure
    OL -- no outgoing label          IB -- TDM incompatible bitrate
    NC -- intf encaps not CCC/TCC    TM -- TDM misconfiguration
    BK -- Backup Connection          ST -- Standby Connection
    CB -- rcvd cell-bundle size bad  XX -- unknown
    SP -- Static Pseudowire
 
    Legend for interface status
    Up -- operational
    Dn -- down
    Neighbor: 10.255.171.45
        Interface                 Type  St     Time last up          # Up trans
        ge-0/2/0.0(vc 100)        rmt   Up     May 12 13:01:50 2009           1
          Remote PE: 10.255.171.45, Negotiated control-word: Yes (Null)
          Incoming label: 299824, Outgoing label: 299776
          Local interface: ge-0/2/0.0, Status: Up, Encapsulation: VLAN Q-in-Q and VCI Interworking

Configuring PE2 with a Layer 2 Circuit over Aggregated Ethernet

CE1 Configuation

Configure Ethernet over ATM on the ATM interface

[edit]interfaces {at-2/0/0 {encapsulation ethernet-over-atm;atm-options {vpi 100;}unit 0 {vci 100.34;family inet {address 30.1.1.1/24;}}}}

PE1 Configuation

Configure the Layer 2 Circuit

[edit]interfaces {at-2/0/1 {atm-options {vpi 100;}unit 0 {encapsulation vlan-vci-ccc;vpi 100;vci-range 32 63;}}ge-5/0/0 {unit 0 {family inet {address 20.1.1.1/24;}family mpls;}}protocols {mpls {interface ge-5/0/0.0;}ospf {area 0.0.0.0 {interface ge-5/0/0.0;interface lo0.0 {passive;}}}ldp {interface all;}l2circuit {neighbor 10.255.171.14 {interface at-2/0/1.0 {virtual-circuit-id 100;}}}}

PE2 Configuation

Configure the Layer 2 Circuit over Aggregated Ethernet on the MX Series Router

[edit]chassis {aggregated-devices {ethernet {device-count 1;}}interfaces {ge-0/2/0 {gigether-options {802.3ad ae0;}}ge-0/2/8 {unit 0 {family inet {address 20.1.1.10/24;}family mpls;ae0 {vlan-vci-tagging;encapsulation vlan-vci-ccc;unit 0 {vlan-id 100;inner-vlan-id-range start 32 end 63;}}}protocols {mpls {interface ge-0/2/8.0;}ospf {area 0.0.0.0 {interface ge-0/2/8.0;interface lo0.0 {passive;}}}ldp {interface all;}l2circuit {neighbor 10.255.171.45 {interface ae0.0 {virtual-circuit-id 100;}}}}

CE2 Configuation

Configure Dual Tagged Ethernet Interface

[edit]interfaces {ge-0/0/0 {flexible-vlan-tagging;encapsulation flexible-ethernet-services;unit 0 {vlan-tags outer 100 inner 34;family inet {address30.1.1.10/24;}}}}

You verify your configuration on the MX Series router with the show l2circuit connections command:


user@PE2>show l2circuit connections
Layer-2 Circuit Connections:
 
    Legend for connection status (St)
    EI -- encapsulation invalid      NP -- interface h/w not present
    MM -- mtu mismatch               Dn -- down
    EM -- encapsulation mismatch     VC-Dn -- Virtual circuit Down
    CM -- control-word mismatch      Up -- operational
    VM -- vlan id mismatch           CF -- Call admission control failure
    OL -- no outgoing label          IB -- TDM incompatible bitrate
    NC -- intf encaps not CCC/TCC    TM -- TDM misconfiguration
    BK -- Backup Connection          ST -- Standby Connection
    CB -- rcvd cell-bundle size bad  XX -- unknown
    SP -- Static Pseudowire

    Legend for interface status
    Up -- operational
    Dn -- down
    Neighbor: 10.255.171.45
        Interface                 Type  St     Time last up          # Up trans
        ae0.0(vc 100)             rmt   Up     May 12 14:48:58 2009           2
          Remote PE: 10.255.171.45, Negotiated control-word: Yes (Null)
          Incoming label: 299872, Outgoing label: 299824
          Local interface: ae0.0, Status: Up, Encapsulation:VLAN Q-in-Q and VCI Interworking

Configuring PE2 with a Remote Interface Switch

CE1 Configuation

Configure Ethernet over ATM on the ATM interface

[edit]interfaces {at-2/0/0 {encapsulation ethernet-over-atm;atm-options {vpi 100;}unit 0 {vci 100.34;family inet {address 30.1.1.1/24;}}}}

PE1 Configuation

Configure the Remote Interface Switch

[edit]interfaces {at-2/0/1 {atm-options {vpi 100;}unit 0 {encapsulation vlan-vci-ccc;vpi 100;vci-range start 32 end 63;}}ge-5/0/0 {unit 0 {family inet {address 20.1.1.1/24;}family iso;family mpls;}}protocols {rsvp {interface ge-5/0/0.0;}mpls {label-switched-path lsp1-2 {from 10.255.171.45;to 10.255.171.14;}label-switched-path lsp2-1 {from 10.255.171.14;to 10.255.171.45;}interface ge-5/0/0.0;}isis {interface ge-5/0/0.0;}connections {remote-interface-switch rws1 {interface at-2/0/1.0;transmit-lsp lsp1-2;receive-lsp lsp2-1;}}}

PE2 Configuation

Configure the Remote Interface Switch on the MX Series Router

[edit]interfaces {ge-0/2/0 {vlan-vci-tagging;encapsulation vlan-vci-ccc;unit 0 {vlan-id 100;inner-vlan-id-range start 32 end 63;}}ge-0/2/8 {unit 0 {family inet {address 20.1.1.10/24;}family iso;family mpls;}}protocols {rsvp {interface ge-0/2/8.0;}mpls {label-switched-path lsp2-1 {from 10.255.171.14;to 10.255.171.45;}label-switched-path lsp1-2 {from 10.255.171.45;to 10.255.171.14;}interface ge-0/2/8.0;}isis {interface ge-0/2/8.0;}connections {remote-interface-switch rws1 {interface ge-0/2/0.0;transmit-lsp lsp2-1;receive-lsp lsp1-2;}}}

CE2 Configuation

Configure Dual Tagged Ethernet Interface

[edit]interfaces {ge-0/0/0 {flexible-vlan-tagging;encapsulation flexible-ethernet-services;unit 0 {vlan-tags outer 100 inner 34;family inet {address30.1.1.10/24;}}}}

You verify your configuration on the MX Series router with the show connections command:


user@PE2>show connections
CCC and TCC connections [Link Monitoring On]
    Legend for status (St)              Legend for connection types
    UN -- uninitialized                 if-sw:  interface switching
    NP -- not present                   rmt-if: remote interface switching
    WE -- wrong encapsulation           lsp-sw: LSP switching
    DS -- disabled                      tx-p2mp-sw: transmit P2MP switching
    Dn -- down                          rx-p2mp-sw: receive P2MP switching
    -> -- only outbound conn is up
    <- -- only inbound  conn is up      Legend for circuit types
    Up -- operational                   intf -- interface
    RmtDn -- remote CCC down            tlsp -- transmit LSP
    Restart -- restarting               rlsp -- receive LSP
 
 
    Connection/Circuit                Type        St      Time last up     # Up trans
    rws1                              rmt-if      Up      May 13 11:25:40           1
      ge-0/2/0.0                        intf  Up
      lsp2-1                            tlsp  Up
      lsp1-2                            rlsp  Up

Configuring PE2 with a Remote Interface Switch over Aggregated Ethernet

CE1 Configuation

Configure Ethernet over ATM on the ATM interface

[edit]interfaces {at-2/0/0 {encapsulation ethernet-over-atm;atm-options {vpi 100;}unit 0 {vci 100.34;family inet {address 30.1.1.1/24;}}}}

PE1 Configuation

Configure the Remote Interface Switch

[edit]interfaces {at-2/0/1 {atm-options {vpi 100;}unit 0 {encapsulation vlan-vci-ccc;vpi 100;vci-range start 32 end 63;}}ge-5/0/0 {unit 0 {family inet {address 20.1.1.1/24;}family iso;family mpls;}}protocols {rsvp {interface ge-5/0/0.0;}mpls {label-switched-path lsp1-2 {from 10.255.171.45;to 10.255.171.14;}label-switched-path lsp2-1 {from 10.255.171.14;to 10.255.171.45;}interface ge-5/0/0.0;}isis {interface ge-5/0/0.0;}connections {remote-interface-switch rws1 {interface at-2/0/1.0;transmit-lsp lsp1-2;receive-lsp lsp2-1;}}}

PE2 Configuation

Configure the Remote Interface Switch over aggregated Ethernet on the MX Series Router

[edit]chassis {aggregated-devices {ethernet {device-count 1;}}interfaces {ge-0/2/0 {gigether-options {802.3ad ae0;}}ge-0/2/8 {unit 0 {family inet {address 20.1.1.10/24;}family iso;family mpls;}}ae0 {vlan-vci-tagging;encapsulation vlan-vci-ccc;unit 0 {vlan-id 100;inner-vlan-id-range start 32 end 63;}}}protocols {rsvp {interface ge-0/2/8.0;}mpls {label-switched-path lsp2-1 {from 10.255.171.14;to 10.255.171.45;}label-switched-path lsp1-2 {from 10.255.171.45;to 10.255.171.14;}interface ge-0/2/8.0;}isis {interface ge-0/2/8.0;}connections {remote-interface-switch rws1 {interface ae0.0;transmit-lsp lsp2-1;receive-lsp lsp1-2;}}}

CE2 Configuation

Configure Dual Tagged Ethernet Interface

[edit]interfaces {ge-0/0/0 {flexible-vlan-tagging;encapsulation flexible-ethernet-services;unit 0 {vlan-tags outer 100 inner 34;family inet {address30.1.1.10/24;}}}}

You verify your configuration on the MX Series router with the show connections command:


user@PE2>show connections
CCC and TCC connections [Link Monitoring On]
    Legend for status (St)              Legend for connection types
    UN -- uninitialized                 if-sw:  interface switching
    NP -- not present                   rmt-if: remote interface switching
    WE -- wrong encapsulation           lsp-sw: LSP switching
    DS -- disabled                      tx-p2mp-sw: transmit P2MP switching
    Dn -- down                          rx-p2mp-sw: receive P2MP switching
    -> -- only outbound conn is up
    <- -- only inbound  conn is up      Legend for circuit types
    Up -- operational                   intf -- interface
    RmtDn -- remote CCC down            tlsp -- transmit LSP
    Restart -- restarting               rlsp -- receive LSP

    
    Connection/Circuit                Type        St      Time last up     # Up trans
    rws1                              rmt-if      RmtDn   May 12 15:34:46           1
      ae0.0                             intf  Up
      lsp2-1                            tlsp  Up
      lsp1-2                            rlsp  Up

Published: 2010-04-12