单臂路由配置步骤
作者：连XC
背景
家里需要两套上网环境，A环境192.168.199.0/24通过家用路由器出公网，B环境192.168.100.0/24流量到达N1后，再转发给家用路由器出公网。
拓扑介绍
1、家用路由器做PPPoE，内网使用192.168.199.1为网关，内网终端192.168.199.0/24；
2、H3C WA4320H面板AP上，GE1/0/1连接家用路由器Access vlan 1，GE1/0/2连接N1，Trunk允许vlan1，100通过，创建两个无线服务模板，A环境业务vlan1，B环境业务vlan100；
3、N1做单臂路由，eth0配置地址192.168.199.254，掩码255.255.255.0，网关家用路由器192.168.199.1（用于连接家用路由器出公网）；子接口eth0.100配置终结vlan 100，地址192.168.100.254，掩码255.255.255.0，做DHCP为通过N1上网的终端分配IP（作为通过B环境上网终端的网关）；
之前苦于网络上一直找不到N1单臂路由OpenWRT如何配置Vlan的方法，现在自己已经配置成功了，将经验分享在这里。
章节1，N1的单臂路由配置
步骤1：
N1刷入OpenWRT
参考知乎上的办法《N1刷机OpenWrt简单教学2022版》，感谢作者https://zhuanlan.zhihu.com/p/519969106
内含flippy大佬固件下载方式，感谢flippy 大佬。
步骤2，配置WAN口地址：
使用默认地址192.168.1.1登陆，root，password，添加连接到家用路由器的WAN接口地址192.168.199.254；
此接口是N1连接家用路由器的接口，作为N1访问公网的出口，请按您家庭实际情况填写。
步骤3，放行防火墙策略，使调试电脑可以访问WAN口；
步骤4，删除原lan接口192.168.1.1配置；
这里要注意，如果不通了，要重刷N1，才能进192.168.1.1进行重新配置了，如果嫌麻烦，也可以直接修改192.168.1.1的IP为您家内网的IP，掩码，网关；
配置成功后，就可以用WAN口的IP来访问N1了；
步骤5，创建内网口，并配置IP；
为B环境终端，连接到N1上网的终端配置内网口，根据您实际家庭网络规划填写；
这里注意自定义接口eth0.100后，内网口的流量就会带上vlan 100的tag，上联交换机要支持vlan；
到此，N1单臂路由，配置完成，终端可连接到上述拓扑的面板AP上，自动获取到192.168.100.x的地址，B环境，终端上网流量，会经过N1，再到家用宽带路由器，出公网；
章节2，N1的OnClh配置
N1要安装OnClh终端和内核，需要B环境，这里我通过Pass通联；
在SSRDOG注册账号免费试用24小时；
至此N1就可以访问B环境了。
下面进行OnClh终端和内核的更新，
最后，希望大家都能顺利的搭好家庭网络环境，访问到自己需要的学习材料。
N1确实是一款简单实用，满足基本需求的路由器。
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