Cisco Systems said that more than 300 models of switches it sells contain a critical vulnerability that allows the CIA to use a simple command to remotely execute malicious code that takes full ...

Is there a way to interrogate a SFP in a Cisco switch (2950, 3750, etc) in order to glean info about fiber quality? Noise, signal loss.. my company is too cheap to buy a real fiber tester.

Telnet access is the most common method of remote access to the command-line interface on the Cisco switches. If you have the license and available memory in the switch, an upgrade to the firmware ...