Virtual LAN (VLAN) technology, which is defined under the IEEE 802.1q specifications, has allowed enterprise to extend the reach of their corporate networks across the WAN. VLANs enable a LAN to be ...

VLANs break a physical LAN into several logical broadcast domains. Each LAN station hears traffic sent by its own VLAN but receives nothing from stations in other VLANs -- not even from those ...

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 ...

In this age of worms, zombies, and botnets, mobile computers themselves are a kind of Trojan horse. Do you know where that computer’s been? No, you really don’t. In its most basic form, NAC (network ...

I'm configuring a Juniper switch with multiple VLANs and putting an IRB interface in each VLAN. A member server (on a downstream switch) in one VLAN can ping all the IRB interfaces and within its own ...