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Configuration Guide - IP Service
S1720, S2700, S5700, and S6720 V200R011C10

This document describes the configurations of IP Service, including IP address, ARP, DHCP, DHCP policy VLAN, DNS, mDNS gateway, mDNS relay, UDP Helper, IP performance optimization, IPv6, DHCPv6, IPv6 DNS, IPv6 over IPv4 tunnel, and IPv4 over IPv6 tunnel.

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Configuring a 6to4 Tunnel

Configuring a 6to4 Tunnel


When configuring a 6to4 tunnel, note the following points:

  • You must create a tunnel interface before setting tunnel parameters.

  • You are advised to set the tunnel number to be the same as the number of the source physical interface of the tunnel, when the specified tunnel source interface is a physical interface.

  • You only need to specify the source address of the tunnel when a 6to4 tunnel is configured. The destination address of the tunnel is obtained from the destination address of the original IPv6 packet. In addition, the source address of a 6to4 tunnel must be unique.

  • You need to configure an IPv6 address for the interface that connects a border device to the IPv6 network, and an IPv4 address for the interface that connects a border device to the IPv4 network. You also need to configure a network address for the tunnel interface to support a dynamic routing protocol.


  1. Run system-view

    The system view is displayed.

  2. Run interface tunnel interface-number

    A tunnel interface is created.

  3. Run tunnel-protocol ipv6-ipv4 6to4

    The tunnel mode is set to 6to4.

  4. Run eth-trunk trunk-id

    The interface is added to the Eth-Trunk.

  5. Run source { source-ip-address | interface-type interface-number }

    A source address or source interface is specified for the tunnel.

  6. Run ipv6 enable

    The IPv6 function is enabled on the interface.

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

    An IPv6 address is configured for the tunnel interface.

    The IPv6 address prefix of the specified tunnel interface must be the same as the address prefix of the IPv6 network that the device belongs to.

Updated: 2020-02-26

Document ID: EDOC1000178170

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