配置IPv6 over IPv4 GRE隧道示例

配置IPv6 over IPv4 GRE隧道示例

组网需求
如图，两个IPv6网络分别通过RouterA和RouterC与IPv4网络中的RouterB连接，客户希望在RouterA和RouterC之间配置IPv6 over IPv4 GRE隧道，使两个IPv6网络可以互通。

配置思路
配置IPv6 over IPv4 GRE隧道的思路如下：
    配置物理接口的IP地址，使设备可以和IPv4网络通信。
    在RouterA和RouterC上创建Tunnel接口，配置GRE隧道，指定Tunnel的源地址和目的地址，使报文封装后可以通过路由转发。注意Tunnel的源地址是发出报文的物理接口IP地址，目的地址是接收报文的物理接口IP地址。
    为使PC1和PC2之间的流量通过GRE隧道传输，RouterA和RouterC上配置静态路由，以对端PC所在网段为目的地址，出接口为本端配置的Tunnel接口。
操作步骤
    配置各物理接口的IP地址
    # 配置RouterA。
    <Huawei> system-view
    [Huawei] sysname RouterA
    [RouterA] interface gigabitethernet 1/0/0
    [RouterA-GigabitEthernet1/0/0] ip address 10.1.1.1 255.255.255.0
    [RouterA-GigabitEthernet1/0/0] quit
    [RouterA] ipv6
    [RouterA] interface gigabitethernet 2/0/0
    [RouterA-GigabitEthernet2/0/0] ipv6 enable
    [RouterA-GigabitEthernet2/0/0] ipv6 address fc01::1 64
    [RouterA-GigabitEthernet2/0/0] quit

    # 配置RouterB。
    <Huawei> system-view
    [Huawei] sysname RouterB
    [RouterB] interface gigabitethernet 1/0/0
    [RouterB-GigabitEthernet1/0/0] ip address 10.1.1.2 255.255.255.0
    [RouterB-GigabitEthernet1/0/0] quit
    [RouterB] interface gigabitethernet 2/0/0
    [RouterB-GigabitEthernet2/0/0] ip address 10.1.2.1 255.255.255.0
    [RouterB-GigabitEthernet2/0/0] quit

    # 配置RouterC。
    <Huawei> system-view
    [Huawei] sysname RouterC
    [RouterC] interface gigabitethernet 1/0/0
    [RouterC-GigabitEthernet1/0/0] ip address 10.1.2.2 255.255.255.0
    [RouterC-GigabitEthernet1/0/0] quit
    [RouterC] ipv6
    [RouterC] interface gigabitethernet 2/0/0
    [RouterC-GigabitEthernet2/0/0] ipv6 enable
    [RouterC-GigabitEthernet2/0/0] ipv6 address fc03::1 64
    [RouterC-GigabitEthernet2/0/0] quit

    配置IPV4静态路由
    # 配置RouterA。
    [RouterA] ip route-static 10.1.2.2 255.255.255.0 10.1.1.2
    # 配置RouterC。
    [RouterC] ip route-static 10.1.1.1 255.255.255.0 10.1.2.1
   
 配置Tunnel接口
    # 配置RouterA。
    [RouterA] interface tunnel 0/0/1
    [RouterA-Tunnel0/0/1] tunnel-protocol gre
    [RouterA-Tunnel0/0/1] ipv6 enable
    [RouterA-Tunnel0/0/1] ipv6 address fc02::1 64
    [RouterA-Tunnel0/0/1] source 10.1.1.1
    [RouterA-Tunnel0/0/1] destination 10.1.2.2
    [RouterA-Tunnel0/0/1] quit
    # 配置RouterC。
    [RouterC] interface tunnel 0/0/1
    [RouterC-Tunnel0/0/1] tunnel-protocol gre
    [RouterC-Tunnel0/0/1] ipv6 enable
    [RouterC-Tunnel0/0/1] ipv6 address fc02::2 64
    [RouterC-Tunnel0/0/1] source 10.1.2.2
    [RouterC-Tunnel0/0/1] destination 10.1.1.1
    [RouterC-Tunnel0/0/1] quit

    配置Tunnel的静态路由
    # 配置RouterA。
    [RouterA] ipv6 route-static fc03::1 64 tunnel 0/0/1
    # 配置RouterC。
    [RouterC] ipv6 route-static fc01::1 64 tunnel 0/0/1

    验证配置结果
    # 在RouterC上Ping RouterA的IPv4地址，可收到返回的报文。
    [RouterC] ping 10.1.1.1
      PING 10.1.1.1: 56  data bytes, press CTRL_C to break
        Reply from 10.1.1.1: bytes=56 Sequence=1 ttl=255 time=84 ms
        Reply from 10.1.1.1: bytes=56 Sequence=2 ttl=255 time=27 ms
        Reply from 10.1.1.1: bytes=56 Sequence=3 ttl=255 time=25 ms
        Reply from 10.1.1.1: bytes=56 Sequence=4 ttl=255 time=3 ms
        Reply from 10.1.1.1: bytes=56 Sequence=5 ttl=255 time=24 ms
      --- 10.1.1.1 ping statistics ---
        5 packet(s) transmitted
        5 packet(s) received
        0.00% packet loss
        round-trip min/avg/max = 3/32/84 ms
    # 在RouterC上Ping RouterA的IPv6地址，可收到返回的报文。
    [RouterC] ping ipv6 fc01::1
      PING fc01::1 : 56  data bytes, press CTRL_C to break
        Reply from fc01::1
        bytes=56 Sequence=1 hop limit=64  time = 28 ms
        Reply from fc01::1
        bytes=56 Sequence=2 hop limit=64  time = 27 ms
        Reply from fc01::1
        bytes=56 Sequence=3 hop limit=64  time = 26 ms
        Reply from fc01::1
        bytes=56 Sequence=4 hop limit=64  time = 27 ms
        Reply from fc01::1
        bytes=56 Sequence=5 hop limit=64  time = 26 ms
      --- fc01::1 ping statistics ---
        5 packet(s) transmitted
        5 packet(s) received
        0.00% packet loss
    round-trip min/avg/max = 26/26/28 ms

配置文件
    RouterA的配置文件
    #
     sysname RouterA
    #
    ipv6
    #
    interface GigabitEthernet1/0/0
     ip address 10.1.1.1 255.255.255.0
    #
    interface GigabitEthernet2/0/0
     ipv6 enable
     ipv6 address fc01::1/64
    #
    interface Tunnel0/0/1
     ipv6 enable
     ipv6 address fc02::1/64
     tunnel-protocol gre
     source 10.1.1.1
     destination 10.1.2.2
    #
    ip route-static 10.1.2.0 255.255.255.0 10.1.1.2
    #                                                                               
    ipv6 route-static fc03:: 64 Tunnel0/0/1
    #
    return

    RouterB的配置文件
    #
     sysname RouterB
    #
    interface GigabitEthernet1/0/0
     ip address 10.1.1.2 255.255.255.0
    #
    interface GigabitEthernet2/0/0
     ip address 10.1.2.1 255.255.255.0
    #
    return

    RouterC的配置文件
    #
     sysname RouterC
    #
    ipv6
    #
    interface GigabitEthernet1/0/0
     ip address 10.1.2.2 255.255.255.0
    #
    interface GigabitEthernet2/0/0
     ipv6 enable
     ipv6 address fc03::1/64
    #
    interface Tunnel0/0/1
     ipv6 enable
     ipv6 address fc02::2/64
     tunnel-protocol gre
     source 10.1.2.2
     destination 10.1.1.1
    #
    ip route-static 10.1.1.0 255.255.255.0 10.1.2.1
    #                                                                               
    ipv6 route-static fc01:: 64 Tunnel0/0/1
    #
    return

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