How to configure the specified IP under multi-network card to take a router (for external networks, but staple server communication)

# How to configure a specific IP to take a router under multiple network cards (applicable to the situation where the external network is not connected, but the Dingding server is connected)

## How to view the network connection established by a process, Method One

– View process pid `ps -ef|grep dingtalk`
– View process connection `lsof -p pid -nP|grep TCP`
“`
$ lsof -p 9542,9583,9587,9531 -nP |grep TCP
dingtalk 9531 lixu 110u sock 0,9 0t0 282904864 protocol: TCP
dingtalk 9531 lixu 145u 282864 IPv4 20338543 119 215.179:443 (ESTABLISHED)
dingtalk 9531 lixu 151u sock 0,9 0t0 282904865 protocol: TCP
“`

## How to check the network connection established by a process, method two
-View process connection `netstat -antlp|grep dingtalk`
“`
$ netstat -antlp|grep dingtalk
(Not all processes could be identified, non-owned process info
will not be shown, you would have to be root to see it all.)
tcp 32 32 0 192.168.43.110:44560 106.11.208.166:443 CLOSE_WAIT 9531/dingtalk 9531/dingtalk CLOSE_WAIT 9531/dingtalk 106: 166.562 11: 166.562 106: 208. 443 CLOSE_WAIT 9531/dingtalk
tcp 0 0 192.168.43.110:38536 203.119.215.179:443 ESTABLISHED 9531/dingtalk
“`

## DingTalk’s server address

tcp 0 90 192.168.60.26: 60006 203.119.215.179:443 ESTABLISHED 4777/dingtalk
tcp 0 192.168.43.110:52588 203.119.215.179:443 # ESTABLISHED 4777/dingtalk # static route
Nailed to the table

br>
“`
sudo route add -host 203.119.201.180 gw 192.168.60.1 dev enp0s31f6
sudo route add -host 203.119.206.75 gw 192.168.60.1 dev enp0s31f6
sudo route add -host 203.119.206.251 gw 192.168.60.1 dev enp0s31f6
sudo route add -host 203.119.207.121 gw 192.168.60.1 dev enp0s31f6
sudo route add -host 203.119.207.122 gw 192.168.60.1 dev enp0s31f6
sudo route add- host 203.119.211.253 gw 192.168.60.1 dev enp0s31f6
sudo route add -host 203.119.214.249 gw 192.168.60.1 dev enp0s31f6
sudo route add -host 203.119.214.251 gw 192.168.60.1 dev enp0s31f6
sudo route add -host 203.119.215.179 gw 192.168.60.1 dev enp0s31f6
sudo route ad d -host 203.119.216.175 gw 192.168.60.1 dev enp0s31f6
sudo route add -host 111.6.226.253 gw 192.168.60.1 dev enp0s31f6
sudo route add -host 111.7.187.240 gw 192.168.60.1 dev enp0s31f6
sudo route add -host 111.7.187.241 gw 192.168.60.1 dev enp0s31f6
“`

## Delete route

“`
sudo route del -host 203.119.201.180< br>sudo route del -host 203.119.206.75
sudo route del -host 203.119.206.251
sudo route del -host 203.119.207.121
sudo route del -host 203.119.207.122
sudo route del- host 203.119.211.253
sudo route del -host 203.119.214.249
sudo route del -host 203.119.214.251
sudo route del -host 203.119.215.179
sudo route del -host 203.119.216.175
sudo route del -host 111.6.226.253
sudo route del -host 111.7.187.240
sudo route del -host 111.7.187.241
“`

## Information< br>
– [Configure Linux to implement static routing](https://www.cnblogs.com/ssgeek/p/9220690.html)
– [Linux route specifies static routing configuration](https://blog .51cto.com/13447608/2088853)

Options andParameters:

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