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Configuration Guide - VPN

S7700 and S9700 V200R013C00

This document describes the configurations of VPN, including GRE, IPSec, BGP/MPLS IP VPN, BGP/MPLS IPv6 VPN, VLL, PWE3, VPLS, L2VPN Access to L3VPN.
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Setting Common Parameters for a VSI

Setting Common Parameters for a VSI


Common parameters of a VSI include VPLS encapsulation type of a VSI, MTU for negotiation, tunnel policy for a VSI, and VSI description.

Perform the following steps on PEs at both ends of a PW.


  1. Run system-view

    The system view is displayed.

  2. Run vsi vsi-name [ auto | static ]

    The VSI view is displayed.

  3. (Optional) Run mtu mtu-value

    The 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.

  4. (Optional) Run tnl-policy policy-name

    Tunnel policies for a VSI are configured.

    By default, no tunnel policy is applied to a VSI.

  5. (Optional) Run description description

    The VSI description is configured.

    By default, the description of a VSI is empty.

    VSI descriptions help identify different VSIs and describe the functions of VSIs.

Updated: 2019-04-08

Document ID: EDOC1100065751

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