The third layer of the OSI Model, the network layer, is where most network engineers focus their time and expertise. As Darragh commented in my post on the data link layer, Layer 2 is cool but Layer 3 ...
For network admins and network security professionals, one of the most important tools to learn to use is Wireshark (formerly Ethereal), a free and open source network analyzer/packet sniffer software ...
Is it possible to create a layer 2 flat network over a series of Cisco switches connected by Layer 3 routes using VLAN's?<BR><BR>My network is setup with a lot of layer 3 routed subnets. Each subnet ...
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