Test local network

Question

Network administration

Advise ways to check the local network. For storm broadcasts, for loads, for “left” traffic, for losses, etc., etc.
Access to network physics is available, access to routers is available.
I used only *top s on the central router with linux and nmap to check the left computers on the network.

Thank you.

Answer 1

Most of the above are in the logs of "smart" switches. The load can be monitored using cacti or zabbix.
What do you call "left" traffic? Use a sniffer.