Nutter helps a reader with a new Catalyst switch and a handful of Macs I just converted my company over to a Cisco Catalyst 6509 core switch. Several weeks after the fact I found out that there are a ...

David Davis explains how to configure EtherChannel to increase your bandwidth and provide redundancy on a Cisco network. In my previous article on the Virtual Router Redundancy Protocol (VRRP), I ...

Most IT pros know that using Telnet to manage routers, switches, and firewalls is not exactly a security best practice. Instead, the accepted alternative to Telnet's lack of security is Secure Shell ...

Most IT pros realize that using Telnet to manage routers, switches, and firewalls is insecure. Transmitted in clear text across a network, Telnet traffic basically publicizes any login usernames and ...

In the IP based Ethernet networks, data and voice services are often transmitted simultaneously over the network. Voice traffic, in particular, requires a higher forwarding priority than data traffic.