OpenVPN上传流量高，占用大量CPU问题分析

来源：互联网发布：淘宝涮单可靠吗编辑：程序博客网时间：2024/06/14 16:46

举例客户端添加了一下路由表destip为需要走VPN服务器的IP，10.2.128.201为VPN服务器IP

destIp =112.90.138.0 , mask = 255.255.255.0 , gateway = 10.2.128.201 , dwIndex = 196612 destIp = 112.90.140.0 , mask = 255.255.255.0, gateway = 10.2.128.201 , dwIndex = 196612

destIp =112.95.241.0 , mask = 255.255.255.0 , gateway = 10.2.128.201 , dwIndex = 196612 destIp = 113.108.1.0 , mask = 255.255.255.0, gateway = 10.2.128.201 , dwIndex = 196612

destIp =114.80.73.0 , mask = 255.255.255.0 , gateway = 10.2.128.201 , dwIndex = 196612

destIp =118.26.192.0 , mask = 255.255.255.0 , gateway = 10.2.128.201 , dwIndex = 196612

destIp = 10.2.128.13, mask = 255.255.255.0 , gateway = 10.2.128.201, dwIndex = 196612

destIp =119.147.13.0 , mask = 255.255.255.0 , gateway = 10.2.128.201 , dwIndex = 196612 红色为有问题的路由表，所有发送给10.2.128.201的路由都会走红色的这条路由包括其自身，这样载入路由就会形成死循环，这种情况下流量统计软件就会把这些发送行为累加，从而产生灰常高的上传流量，死循环还导致了很高的CPU占用率。所以在添加路由表的时候需要对添加的IP进行过滤，不能添加和VPN服务器在同一网段的IP.。