Friday, June 24, 2011

Potential DoS attack on a Cisco Layer 2 Switch

I came across an Issue at my work where one of our customer's RF network was frequently going down. This RF network supports wireless handheld inventory management RF guns. The initial reason for the network down time was unknown but on careful examination through remote user assistance the cabling for the standard network setup was altered.

Usually, in small network installations, it is a best practice to connect an RF network to a Gigabyte or fast Ethernet port on a switch, on a 24 port switch it is a good practice to connect the RF network to the last switch ports, either 23X or 24X, not a coercion, but that's what I've