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This diagram sample illustrates the cooperative vehicular delay-tolerant network operation.
"Delay-tolerant networking (DTN) is an approach to computer network architecture that seeks to address the technical issues in heterogeneous networks that may lack continuous network connectivity. Examples of such networks are those operating in mobile or extreme terrestrial environments, or planned networks in space.
Recently, the term disruption-tolerant networking has gained currency in the United States due to support from DARPA, which has funded many DTN projects. Disruption may occur because of the limits of wireless radio range, sparsity of mobile nodes, energy resources, attack, and noise." [Delay-tolerant networking. Wikipedia]
"Routing in delay-tolerant networking concerns itself with the ability to transport, or route, data from a source to a destination, which is a fundamental ability all communication networks must have. Delay- and disruption-tolerant networks (DTNs) are characterized by their lack of connectivity, resulting in a lack of instantaneous end-to-end paths. In these challenging environments, popular ad hoc routing protocols such as AODV and DSR fail to establish routes. This is due to these protocols trying to first establish a complete route and then, after the route has been established, forward the actual data. However, when instantaneous end-to-end paths are difficult or impossible to establish, routing protocols must take to a "store and forward" approach, where data is incrementally moved and stored throughout the network in hopes that it will eventually reach its destination. A common technique used to maximize the probability of a message being successfully transferred is to replicate many copies of the message in hopes that one will succeed in reaching its destination." [Routing in delay-tolerant networking. Wikipedia]
The example "Cooperative vehicular delay-tolerant network diagram" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Vehicular Networking solution from the Computer and Networks area of ConceptDraw Solution Park.
Vehicular network diagram
Vehicular network diagram, truck, tree, taxi, road, radio tower, office building, house, high rise block, fir tree, factory, crossroads, coverage area, car, bungalow, block, airport, airplane,

Design Element: Cisco for Network Diagrams

ConceptDraw DIAGRAM is perfect for software designers and software developers who need to draw Cisco Network Diagrams.
The vector stencils library "Cisco routers" contains 27 symbols of routers for drawing Cisco computer network diagrams.
"When multiple routers are used in interconnected networks, the routers exchange information about destination addresses using a dynamic routing protocol. Each router builds up a table listing the preferred routes between any two systems on the interconnected networks. A router has interfaces for different physical types of network connections, (such as copper cables, fiber optic, or wireless transmission). It also contains firmware for different networking Communications protocol standards. Each network interface uses this specialized computer software to enable data packets to be forwarded from one protocol transmission system to another.
Routers may also be used to connect two or more logical groups of computer devices known as subnets, each with a different sub-network address. The subnets addresses recorded in the router do not necessarily map directly to the physical interface connections." [Router (computing). Wikipedia]
The symbols example "Cisco routers - Vector stencils library" 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.
www.conceptdraw.com/ solution-park/ computer-networks-cisco
Router
Router, router,
Router, subdued
Router, subdued, router,
Router with silicon switch
Router with silicon switch, router with silicon switch,
Wavelength router
Wavelength router, wavelength router,
NetFlow router
NetFlow router, NetFlow router ,
uBR 910
uBR 910, uBR 910,
Broadband router
Broadband router, broadband router,
Gigabit switch ATM tag router
Gigabit switch ATM tag router, gigabit switch ATM tag router,
ATM tag switch router
ATM tag switch router, ATM tag switch router,
ATM router
ATM router, ATM router,
NetFlow router
NetFlow router, NetFlow router, edge label switch router, NetFlow,
Cisco 7505
Cisco 7505, Cisco 7505,
Cisco 7507
Cisco 7507, Cisco 7507,
Cisco 7500 ARS (7513)
Cisco 7500 ARS (7513), Cisco 7500 ARS, Cisco 7513 ,
Voice enabled router
Voice enabled router, voice enabled router,
TDM router
TDM router, TDM router ,
IP telephony router
IP telephony router, IP telephony router,
IAD router
IAD router, IAD router,
Content service router
Content service router, content service router,
Cisco storage router
Cisco storage router, Cisco storage router,
Router with firewall
Router with firewall, router with firewall ,
Wireless router
Wireless router, wireless router,
ASR 1000 series
ASR 1000 series, ASR 1000 series,
ATM 3800
ATM 3800, ATM 3800,
AXP
AXP, AXP,
Cable modem
Cable modem, cable modem,
Ground terminal
Ground terminal, ground terminal,

Network Protocols

Drawing Network Protocols using ConceptDraw DIAGRAM stencils
"Logical topology, or signal topology, is the arrangement of devices on a computer network and how they communicate with one another. How devices are connected to the network through the actual cables that transmit data, or the physical structure of the network, is called the physical topology. Physical topology defines how the systems are physically connected. It represents the physical layout of the devices on the network. The logical topology defines how the systems communicate across the physical topologies.
Logical topologies are bound to network protocols and describe how data is moved across the network. ...
EXAMPLE : twisted pair Ethernet is a logical bus topology in a physical star topology layout. while IBM's token ring is a logical ring topology, it is physically set up in star topology." [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.
Logical network topology diagram
Logical network topology diagram, router,

Basic Network Diagram

The Basic Network Diagram is an easy and effective way to design and document a simple network, it lets to represent visually and logically how the different network devices and computer equipment can be installed to meet the main business needs. ConceptDraw DIAGRAM software supplied with Computer Network Diagrams solution from the Computer and Networks area of ConceptDraw Solution Park is a perfect tool for drawing the Basic Computer Network diagrams, designs, schematics, and maps, network architectures, topologies, and layouts. Numerous vector libraries of network symbols, icons and components are incredibly helpful for IT and telecom engineers, stakeholders and end-users when designing Basic Network Diagrams, Common Network Diagrams, Common Network Topologies, 10Base-T Star Network Topologies, Bus Topology Diagrams, Communication Network Diagrams, System Designs, Regional Cable Head-End Diagrams, etc. Collection of predesigned samples and templates included to Computer Network Diagrams solution also greatly extends the capabilities of ConceptDraw DIAGRAM users.

Network Gateway Router

Special libraries of highly detailed, accurate shapes and computer graphics, servers, hubs, switches, printers, mainframes, face plates, routers etc.