AAA is an architecture available to all security devices to authenticate users accessing the device or a nearby network. The authorization feature is used to restrict users' privileges after they have been authenticated. Accounting is used to keep logs of the devices' activities, as well as the activities of the users on the network or on network devices. AAA allows its functions to be carried out on a per-user or per-service basis. In other words, it can be used to authenti..
Understanding the Value of Your Data Center
Data Centers are specialized environments that safeguard your company's most valuable equipment and intellectual property. Data Centers house the devices that do the following: Process your business transactions Host your website Process and store your intellectual property Maintain your financial records Route your e-mails A well-planned and effectively managed Data Center supports these operations and increases your company's productivity by providing reliable network..
Layer 3 switching configuration works similarly to router configuration—IP addresses are assigned to interfaces, and routing protocols are defined. The routing protocol configuration works just like a router; however, the interface configuration on MLS switches differs slightly from routers, using VLAN interfaces, routed interfaces, and PortChannel interfaces. VLAN interfaces give a Layer 3 switch a Layer 3 interface attached to a VLAN. Cisco sometimes refers to these inter..
The first thing to notice is that the output includes the following line: The name for the keys will be: Router1.oreilly.com The router name and domain name are always included in the key. So it is critical to define these two values before generating the keys. If you generate the keys first and then change the router's name or domain, the keys may no longer work: Router1(config)#hostname Router1 Router1(config)#ip domain-name oreilly.com When you use the crypto key gener..
You can create a DVMRP tunnel from a Cisco router to a nonCisco DVMRP device by using the special DVMRP tunnel mode. This allows you to pass multicast traffic through a section of network that doesn't support multicast routing: Router1#configure terminal Enter configuration commands, one per line. End with CNTL/Z. Router1(config)#ip multicast-routing Router1(config)#interface Tunnel0 Router1(config-if)#ip unnumbered FastEthernet0/0 Router1(config-if)#ip pim spars..
