[Huawei]int Tunnel 0/0/1 //创建Tunnel接口，并进入Tunnel接口视图
[Huawei-Tunnel0/0/1]tunnel-protocol gre //配置Tunnel接口的隧道协议为GRE
[Huawei-Tunnel0/0/1]source 10.1.1.1 //配置Tunnel的源地址或源接口
[Huawei-Tunnel0/0/1]destination 10.1.1.2 //配置Tunnel的目的地址
[Huawei-Tunnel0/0/1]mtu 1500 //配置Tunnel接口的MTU,缺省为1500
[Huawei-Tunnel0/0/1]description a1 //配置接口的描述信息
[Huawei-Tunnel0/0/1]ip add 10.2.1.1 24 //若是采用GRE隧道实现IPv4协议的互通，必须在Tunnel接口下配置IPv4地址, 配置Tunnel接口的IPv4地址
[Huawei-Tunnel0/0/1]ip address unnumbered interface GigabitEthernet 0/0/1 //配置Tunnel接口借用IP地址
[Huawei]ip route-static 10.1.1.1 24 Tunnel 0/0/1 //配置经过Tunnel接口的静态路由
[Huawei-Tunnel0/0/1]gre key 123 //配置GRE隧道的识别关键字
[Huawei-Tunnel0/0/1]keepalive //使能GRE的Keepalive检测功能
[Huawei]display interface Tunnel 0/0/1 //查看Tunnel接口的工作状态
[Huawei]display tunnel-info tunnel-id 1 //查看隧道信息
[Huawei]ping -a 10.1.1.2 10.2.1.1 // Ping对端的Tunnel接口地址，从本端Tunnel接口到对端Tunnel接口可以Ping通
[Huawei-Tunnel0/0/1]display keepalive packets count //查看GRE隧道接口发送给对端以及从对端接收的Keepalive报文的数量和Keepalive响应报文的数量
[Huawei-Tunnel0/0/1]statistic enable inbound //打开Tunnel接口的流量统计功能
[Huawei-Tunnel0/0/1]statistic enable outbound
[Huawei]display ip routing-table vpn-instance 1 //查看通过Tunnel接口转发的VPN路由信息
[Huawei-Tunnel0/0/1]reset keepalive packets count //重置Tunnel接口的Keepalive报文相关统计信息
