本文主要以 Zerotier 组好的各 Virtual L2 网络节点 + 动态路由 RIP 为例，最终效果就是让网关建立 Zerotier 的 Virtual L2 网络，网关下的其它网段就能相互通信。
拓扑如下：
例如如上拓扑，Zerotier 建立了 192.168.193.0/24 的互联虚拟二层，有 192.168.193.6 、192.168.193.11 、192.168.193.21 的网关下面有 172.16.0.0/23 、192.168.2.0/24 、192.168.11.0/24 三个网段，那么通过建立 rip 动态路由，让这三个网段可以互通。
网关设备默认是 OpenWRT 设备，前提是已经通过例如 VPN/Tinc/Zerotier 等方法建立了互联段。
如果还没建立的话可以参考：
https://vnf.cc/2019/12/zerotier-sd-lan/
先建好互联的段，
下面开始做动态路由的配置
先安装 quagga-zebra 和 quagga-ripd 组件：
# opkg install quagga-zebra quagga-ripd
如果想要有操作终端界面可以安装quagga-vtysh
分别编辑 rip 路由/etc/quagga/ripd.conf
192.168.193.6 、172.16.0.0/23
password zebra ! router rip network 192.168.193.0/24 route 172.16.0.0/23 ! access-list vty permit 127.0.0.0/8 access-list vty deny any ! line vty access-class vty
192.168.193.11 、192.168.2.0/24
password zebra ! router rip network 192.168.193.0/24 route 192.168.2.0/24 ! access-list vty permit 127.0.0.0/8 access-list vty deny any ! line vty access-class vty
192.168.193.21 、192.168.11.0/24
password zebra ! router rip network 192.168.193.0/24 route 192.168.11.0/24 ! access-list vty permit 127.0.0.0/8 access-list vty deny any ! line vty access-class vty
然后重启 quagga 进程/etc/init.d/quagga restart
在有装 vtysh 的设备可以进终端看看 rip 状态
# vtyshHello, this is Quagga (version 1.1.1). Copyright 1996-2005 Kunihiro Ishiguro, et al. nRouter# show ip rip statusRouting Protocol is "rip" Sending updates every 30 seconds with +/-50%, next due in 28 seconds Timeout after 180 seconds, garbage collect after 120 seconds Outgoing update filter list for all interface is not set Incoming update filter list for all interface is not set Default redistribution metric is 1 Redistributing: Default version control: send version 2, receive any version Interface Send Recv Key-chain ztuku6smag 2 1 2 Routing for Networks: 192.168.193.0/24 Routing Information Sources: Gateway BadPackets BadRoutes Distance Last Update 192.168.193.21 0 0 120 00:00:19 192.168.193.11 0 0 120 00:00:07 192.168.193.14 0 0 120 00:00:10 Distance: (default is 120) nRouter#
在其它设备可以看看路由
# ip route | grep zebra172.16.0.0/23 via 192.168.193.6 dev ztuku6smag proto zebra metric 20 192.168.11.0/24 via 192.168.193.21 dev ztuku6smag proto zebra metric 20 192.168.12.0/24 via 192.168.193.14 dev ztuku6smag proto zebra metric 20
这样子这三个网段就能够互通了，
比如从 172.16.1.99 可以通 192.168.11.8
root@ubuntu-lxc:/etc/apt# ip addr | grep inet inet 127.0.0.1/8 scope host lo inet6 ::1/128 scope host inet 172.16.1.99/23 brd 172.16.1.255 scope global eth0 inet6 fe80::38a9:fcff:fe1d:b7f6/64 scope link root@ubuntu-lxc:/etc/apt# ping 192.168.11.8PING 192.168.11.8 (192.168.11.8) 56(84) bytes of data. 64 bytes from 192.168.11.8: icmp_seq=1 ttl=62 time=19.0 ms 64 bytes from 192.168.11.8: icmp_seq=2 ttl=62 time=14.6 ms 64 bytes from 192.168.11.8: icmp_seq=3 ttl=62 time=15.0 ms 64 bytes from 192.168.11.8: icmp_seq=4 ttl=62 time=16.1 ms 64 bytes from 192.168.11.8: icmp_seq=5 ttl=62 time=16.9 ms ^C --- 192.168.11.8 ping statistics --- 5 packets transmitted, 5 received, 0% packet loss, time 4004ms rtt min/avg/max/mdev = 14.592/16.344/19.022/1.572 ms root@ubuntu-lxc:/etc/apt#
refer: https://vnf.cc/2020/09/zerotier-l3-rip/
