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Configuration Guide - VXLAN

CloudEngine 12800 and 12800E V200R003C00

This document describes the configurations of VXLAN.
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Configuring a Layer 3 VXLAN Gateway

Configuring a Layer 3 VXLAN Gateway


A tenant is identified by a VNI. VNIs can be mapped to BDs in 1:1 mode so that a BD can function as a VXLAN network entity to transmit VXLAN data packets. A VBDIF interface is a Layer 3 logical interface created for a BD. After an IP address is configured for a VBDIF interface of a BD, the VBDIF interface can function as the gateway for tenants in the BD for Layer 3 forwarding. VBDIF interfaces allow Layer 3 communication between VXLANs on different network segments and between VXLANs and non-VXLANs, and implement Layer 2 network access to a Layer 3 network.

VBDIF interfaces are configured on Layer 3 VXLAN gateways for inter-segment communication, and are not needed in the case of intra-segment communication.

  • Only the CE12800E supports the IPv6 VXLAN Layer 3 gateway, and the CE12800 only supports the IPv6 VXLAN Layer 2 gateway.

  • The DHCP relay function can be configured on the VBDIF interface so that hosts can request IP addresses from the external DHCP server.


  1. Run system-view

    The system view is displayed.

  2. Run interface vbdif bd-id

    A VBDIF interface is created, and the VBDIF interface view is displayed.

  3. Configure an IP address for the VBDIF interface to implement Layer 3 interworking.
    • On IPv4 overlay networks, run ip address ip-address { mask | mask-length } [ sub ]

      An IPv4 address is configured for the VBDIF interface.

    • On IPv6 overlay networks, perform the following operations:
      1. Run ipv6 enable

        IPv6 is enabled for the VBDIF interface.

      2. Run ipv6 address { ipv6-address prefix-length | ipv6-address/prefix-length }

        Or run ipv6 address { ipv6-address prefix-length | ipv6-address/prefix-length } eui-64

        A global unicast address is configured for the VBDIF interface.

  4. (Optional) Run mac-address mac-address

    A MAC address is configured for the VBDIF interface.

    By default, the MAC address of a VBDIF interface is the system MAC address.

  5. Run commit

    The configuration is committed.

Updated: 2019-05-05

Document ID: EDOC1100004207

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