Raspberry Pi : Serial Console Server with ser2net

Configuration the console server

1. Update your Pi and install ser2net
#sudo apt update
#sudo apt upgrade -y
#sudo apt install ser2net -y
 

2. Find the serial adapters are listening on what port
#dmesg | grep tty

3. Configuration ser2net

#sudo nano /etc/ser2net.yaml

define: &banner \r\nser2net port \p device \d [\B] (Debian GNU/Linux)\r\n\r\n

connection: &con0096
    accepter: tcp,2000
    enable: on
    options:
      banner: *banner
      kickolduser: true
      telnet-brk-on-sync: true
    connector: serialdev,
              /dev/ttyUSB0,
              9600n81,local

#sudo systemctl start ser2net
#sudo systemctl status ser2net

How to used the console server

1. Make sure the console server USB serial cable is connected to switch or any related device
2. Service ser2net is started. Noted the console server IP address
3. Open the telnet or ssh - Putty to telnet the console server

4. In Host-address : <console server IP> : port : <refer to the port setting in configuration>
5. Console to switch is open and now can do switch configuration

source : https://www.jpaul.me/2019/01/how-to-build-a-raspberry-pi-serial-console-server-with-ser2net/