How does one go about detecting a network drop/disconnect.

S

SLS

n00b
Joined
Dec 20, 2010
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46
Hi All,
How does one go about detecting a network drop/disconnect. This is not limited to wireless but also to wired connections. Usually people use it to refer to a wireless device losing a connection for a big enough period of time that they notice. The actual drop might be longer than they notice but due to bufferring it takes a while.

What I am interested in is a physical drop at the network interface level.

Google searching usually brings up nothing better than the suggestion to ping a target or an application that does that. But a non response is not neccessarily a drop, and a ping is ICMP so what about TCP? What about length of interval of drop? What do we consider as a physical drop milliseconds? longer?
How do we detect this?

Consider a network card losing connection because of a hardware issue? How do we detect this and then log it.
 
I was hoping for a software solution...

Okay lets say my only solution was hardware. Whats the cheapest switch I can use to do this?
 
Software solution - PRTG free 100 sensors, set it up to monitor your switch over SNMP and send alerts

Full Automated Nagios - again set it up to monitor SNMP on your switches and send alerts

Cacti - set it up to monitor SNMP on your switches and send alerts
 
Spiceworks has a new network monitor program and one of the features is e-mails if a machine drops it's connection and it's free.
 
SLS said:
I was hoping for a software solution...

Okay lets say my only solution was hardware. Whats the cheapest switch I can use to do this?
Click to expand...

All solutions offered have been software solutions.
 
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