A Cisco security advisory outlines weaknesses in its WLAN controllers that could lead to the kind of inadvertent denial of service attacks that affected Duke’s wireless net. Cisco has just released a ...

Cisco Catalyst 3750....when I do the "show arp" command, it tells me what vlan the macs are in. I don't care what vlan the mac is in, I need to know the physical port (fa1/0/3 for example). Any way to ...

In last week’s post, I compared two sample test questions – a simple one, and a more exam-realistic one. The more realistic question required a deeper knowledge of the topic (ARP), and it required ...

In the ARP table of a Cisco router under the age, what does the * indicate? I know that a dash (-) means that it is local to the router, but what does the * mean? * seems to make google searches come ...