Is there any ways that we can understand a network is quite stable?

In previous time a serial network interface did fail sometimes to establish a connections.

Now I have replaced a new one [something like this ], and I'm trying to understand how I can evaluate the stability of the network that is established.


It's very general question ;)

You have many options, i.e. using telemetry (it very depends on network device you are using) or external monitoring tools to track your connection status (i.e. track parameters via SNMP etc., or simply try to ping remote device).


Basically, you can monitor the network ports for faults or test each link/path for errors.


  • error counters on managed switch ports
  • error counters on host/NIC side
  • port status (link state, speed, duplex mode)
  • device availability (ping, status page, telnet, ...)

SNMP can be used for permanent monitoring and generating automated traps in case of an error.

Active testing:

  • have the deployed cabling (re)certified to the specs
  • (extended) throughput test with gigabit link in both directions simultaneously (for all pairs), e.g. with iperf3
  • check error counters afterwards

COM servers can have quirks of their own. Make sure you've got a decent device, the latest firmware installed and the power is reliable (PoE from the switch is best).

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