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Configuration Guide - VPN

CloudEngine 12800 and 12800E V200R005C10

This document describes the configurations of VPN, including GRE, BGP/MPLS IP VPN, BGP/MPLS IPv6 VPN, VLL, PWE3, and VPLS.
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Creating a VSI and Configuring LDP Signaling

Creating a VSI and Configuring LDP Signaling


When using LDP as the PW signaling, you must configure the VSI ID for a VSI. VSI IDs differentiate VSIs, and you can use these VSI IDs during PW signaling negotiation.

Do as follows on the PEs of the two ends of the PW:


  1. Run system-view

    The system view is displayed.

  2. Run vsi vsi-name [ static ] [ bd-mode ]

    A VSI is created and the VSI view is displayed.

  3. (Optional) Run encapsulation { ethernet | vlan }

    The VSI encapsulation type is configured.

    By default, the encapsulation type of the interface is VLAN.

  4. (Optional) Run mtu mtu-value

    The maximum transmission unit (MTU) for packets sent by the VSI is configured.

    The default value of MTU in the VSI view is 1500.

    When configuring MTUs, note that MTUs of VSIs created for the same VPLS on different PEs must be the same.

    • When an interface is bound to a VSI, the MTU can be configured in the interface view but does not take effect. The PW signaling uses the MTU that is configured in the VSI for PW MTU negotiation.
    • On the switch, the MTU value is used only for signaling negotiation and does not limit the size of forwarded packets.

  5. (Optional) Run description description

    The VSI description is configured.

    By default, the description of a VSI is empty.

  6. Run pwsignal ldp

    The PW signaling protocol is specified as LDP and the VSI-LDP view is displayed.

    By default, no signaling mode is configured for a VSI.

  7. Run vsi-id vsi-id

    The VSI ID is configured.

    By default, no VSI ID is set.


    The two ends of the VSI must agree on the same VSI ID.

    The VSI exists only on the PE. One PE can have multiple VSIs. VSI IDs on all devices in the same VPLS domain must be the same.

  8. Run peer peer-address [ negotiation-vc-id vc-id ] [ tnl-policy policy-name ] [ upe ]

    The VSI peer is configured.

    By default, no peer is configured for a VSI.


    When VPLS uses the GRE tunnel for interworking, peer-address specifies the destination address of the GRE tunnel.

  9. (Optional) Run peer peer-address [ negotiation-vc-id vc-id ] pw pw-name

    A PW is created and the VSI-LDP-PW view is displayed.

    By default, no PW is created.

  10. Run commit

    The configuration is committed.

Updated: 2019-04-03

Document ID: EDOC1100075353

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