Cisco Network Diagrams

"Fault-tolerant computer systems are systems designed around the concepts of fault tolerance. In essence, they have to be able to keep working to a level of satisfaction in the presence of faults. ...
Most fault-tolerant computer systems are designed to be able to handle several possible failures, including hardware-related faults such as hard disk failures, input or output device failures, or other temporary or permanent failures; software bugs and errors; interface errors between the hardware and software, including driver failures; operator errors, such as erroneous keystrokes, bad command sequences, or installing unexpected software; and physical damage or other flaws introduced to the system from an outside source." [Fault-tolerant computer system. Wikipedia]
The computer network diagram example "Cisco LAN fault-tolerance system" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Cisco Network Diagrams solution from the Computer and Networks area of ConceptDraw Solution Park.

Cicso Intelligent Service Gateway (ISG), a technology from Cisco Systems, to manage subscribers in Broadband, Wireline & Wireless deployments.
"The Cisco Intelligent Services Gateway offers Service Providers an opportunity to take direct control of resources and characteristics in their broadband network to deliver next generation services by:
(1) Controlling, securing & differentiating services via intelligent policies embedded directly in the network or received via open and standards-based control interfaces to the BSS.
(2) Customizing Service Convergence with zero-touch provisioning across customized networks.
(3) Distributing IP Session control into the network while simultaneously maintaining consistent PPP session control." [cisco.com/ en/ US/ products/ ps6588/ products_ ios_ protocol_ group_ home.html]
This computer network topology diagram example "Cisco ISG" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Cisco Network Diagrams solution from the Computer and Networks area of ConceptDraw Solution Park.

The vector stencils library "Cisco products additional" contains 141 symbols of computer network devices and equipment.
"Cisco's products and services focus upon three market segments—Enterprise and Service Provider, Small Business and the Home. ...
Corporate market refers to enterprise networking and service providers.
Borderless networks ... routers, switches, wireless systems, security systems, WAN acceleration, energy and building management systems and media aware networks.
Collaboration ... IP video and phones, TelePresence, HealthPresence, Unified Communications, Call Center systems, Enterprise social networks and Mobile applications.
Datacenter and Virtualization ... Unified Computing, Unified Fabric, Data Centre Switching, Storage Networking and Cloud Computing services.
IP NGN (Next Generation Networks) ... High-end routing and switching for fixed and mobile service provider networks, broadcast video contribution/ distribution, entitlement and content delivery systems. ...
Small businesses include home businesses and (usually technology-based) startups.
Home user refers to individuals or families who require these kinds of services." [Cisco Systems. Wikipedia]
Create the computer network toplogy diagrams using the ConceptDraw PRO diagramming and vector drawing software with the design elements library "Cisco products additional".
The example "Design elements - Cisco products additional" is included in the Cisco Network Diagrams solution from the Computer and Networks area of ConceptDraw Solution Park.

"... logical topology shows how data flows within a network, regardless of its physical design. ...
... mapping the data flow between the components determines the logical topology of the network." [Network topology. Wikipedia]
"In a shared media topology, all the systems have the ability to access the physical layout whenever they need it. The main advantage in a shared media topology is that the systems have unrestricted access to the physical media. Of course, the main disadvantage to this topology is collisions. If two systems send information out on the wire at the same time, the packets collide and kill both packets. Ethernet is an example of a shared media topology. ...
The token-based topology works by using a token to provide access to the physical media. In a token-based network, there is a token that travels around the network. When a system needs to send out packets, it grabs the token off of the wire, attaches it to the packets that are sent, and sends it back out on the wire. As the token travels around the network, each system examines the token. When the packets arrive at the destination systems, those systems copy the information off of the wire and the token continues its journey until it gets back to the sender. When the sender receives the token back, it pulls the token off of the wire and sends out a new empty token to be used by the next machine." [Logical topology. Wikipedia]
This Cisco logical computer network diagram example was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Cisco Network Diagrams solution from the Computer and Networks area of ConceptDraw Solution Park.