netstat -r 命令有什么用？不同标志代表什么意思：MSS、窗口等

Question

不同标志的含义是什么：MSS、窗口等

Answer 1

从man netstat：

--route , -r
   Display  the kernel routing tables. See the description in route(8) for
   details.  netstat -r and route -e produce the same output.

从man 8 route：

MSS    Default  maximum  segment  size  for  TCP  connections over this
       route.

Window Default window size for TCP connections over this route.