configuration

Technology: Security Area: AAA Vendor: Cisco Software: AAA feature compatibility required Platform: Catalyst platforms, Routing platforms   Introduction RADIUS is a security feature working in client/server mode. It provides authorization access to the network and combines the authentication and authorization processes. What’s essential, RADIUS cannot control the authorization level of users. Nowadays, all RADIUS server […]

The Spanning Tree Protocol (STP) is defined by IEEE standard 802.1D-1988. The STP generates a single spanning tree inside a network. Such mode proved to be useful for supporting applications and protocols in which frames are delivered out of sequence or as duplicates. The topology is named Spanning Tree, because it is constructed as a […]

A router on a stick is one of the ways to allow routing between VLANs. That kind of a setup consists of a router and a switch connected through one Ethernet link configured as an 802.1q trunk link. Such a configuration is typical in networks where no layer-3 switch exists. But first, let’s find out […]