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Linux下ECMP等价路由的建立

 4 months ago
source link: https://bajie.dev/posts/20231227-linux_ecmp/
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Linux下ECMP等价路由的建立

2023-12-27 1 分钟阅读

我们有两个出口，一个从无锡出，一个从世纪互联出

这台机器的em1接世纪互联，em2接无锡尚航，两个网关，有ipv6和ipv4

ISP 1:
    Gateways:
        172.16.9.254
        2001:db8:a::1
    Interface: em1
	
ISP 2:
    Gateways:
        172.18.9.254
        2001:db8:b::1
    Interface: em2

那么这台机器的ECMP等价路由这么做：

ip route replace default proto static scope global \
    nexthop dev em1 via 172.16.9.254 weight 1 \
    nexthop dev em2 via 172.18.9.254 weight 1

ip -6 route replace default proto static scope global \
    nexthop dev em1 via 2001:db8:a::1 weight 1 \
    nexthop dev em2 via 2001:db8:b::1 weight 1

这两条命令需要放到 /etc/rc.d/rc.locl 或者ifup里面去

之后发包的时候就会一左一右轮流发。


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