Port mirroring is a feature that duplicates network traffic from a source host’s port to a secondary host for analysis. It can be used for monitoring, troubleshooting, and analyzing network ...

When a network router doesn't have enough network ports to connect all the necessary devices, a switch can be used to add additional ports. In the case of business networks, switches are often ...

In QoS part 3 we gathered the information required to mark DSCP values for unmarked traffic flows for a TMUBPS (Totally Made Up but Plausible Scenario). In this ...

Rate your favorite Cisco Press books. Chapter 3, “Switch Operation,” presents a functional overview of how multilayer switching (MLS) is performed at Layers 3 and 4. The actual MLS process can take ...

There’s no such thing as a dedicated iSCSI switch because iSCSI storage traffic runs on Ethernet networks. That doesn’t mean, however, that we can’t have a discussion about iSCSI switches as there are ...

We're running version 14 of Whatsupgold, and we've a whole campus full of Cisco switches we want monitored. So far everything works great, except that when someone plugs a computer into a wall jack, ...

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 ...