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Network Protocols

Drawing Network Protocols using ConceptDraw PRO stencils
The vector stencils library "Logical network diagram" contains 16 symbols for drawing logical computer network diagrams.
"The logical topology ... is the way that the signals act on the network media, or the way that the data passes through the network from one device to the next without regard to the physical interconnection of the devices. A network's logical topology is not necessarily the same as its physical topology. ...
The logical classification of network topologies generally follows the same classifications as those in the physical classifications of network topologies but describes the path that the data takes between nodes being used as opposed to the actual physical connections between nodes. The logical topologies are generally determined by network protocols as opposed to being determined by the physical layout of cables, wires, and network devices or by the flow of the electrical signals, although in many cases the paths that the electrical signals take between nodes may closely match the logical flow of data, hence the convention of using the terms logical topology and signal topology interchangeably.
Logical topologies are often closely associated with Media Access Control methods and protocols. Logical topologies are able to be dynamically reconfigured by special types of equipment such as routers and switches." [Network topology. Wikipedia]
The symbols example "Logical network diagram - Vector stencils library" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Computer and Networks solution from the Computer and Networks area of ConceptDraw Solution Park.
www.conceptdraw.com/ solution-park/ computer-and-networks
Server
Server, server,
Disk
Disk, disk,
Printer
Printer, printer,
Domain
Domain, domain,
Network
Network, network,
File
File, file,
Group
Group, group,
Root
Root, root,
Shared Admin
Shared Admin, shared admin,
Directory
Directory, directory,
Tree
Tree, tree,
NDS Container
NDS Container, NDS container,
Unknown
Unknown, unknown,
Neightborhood
Neightborhood, neighborhood,
Service
Service, service,
Information
Information, information,

computer networks Computer and Networks Area

computer networks
The solutions from Computer and Networks Area of ConceptDraw Solution Park collect samples, templates and vector stencils libraries for drawing computer and network diagrams, schemes and technical drawings.
"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,
The vector stencils library "Cisco WAN" contains 15 symbols of wide area network (WAN) devices and equipment for drawing Cisco WAN diagrams.
"A wide area network (WAN) is a network that covers a broad area (i.e., any telecommunications network that links across metropolitan, regional, or national boundaries) using leased telecommunication lines. Business and government entities utilize WANs to relay data among employees, clients, buyers, and suppliers from various geographical locations. ...
Related terms for other types of networks are personal area networks (PANs), local area networks (LANs), campus area networks (CANs), or metropolitan area networks (MANs) which are usually limited to a room, building, campus or specific metropolitan area (e.g., a city) respectively.
... it may be best to view WANs as computer networking technologies used to transmit data over long distances, and between different LANs, MANs and other localised computer networking architectures. ...
WANs are often built using leased lines. At each end of the leased line, a router connects the LAN on one side with a second router within the LAN on the other. Leased lines can be very expensive. Instead of using leased lines, WANs can also be built using less costly circuit switching or packet switching methods. Network protocols including TCP/ IP deliver transport and addressing functions. Protocols including Packet over SONET/ SDH, MPLS, ATM and Frame relay are often used by service providers to deliver the links that are used in WANs." [Wide area network. Wikipedia]
The symbols example "Cisco WAN - 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
CSU/DSU
CSU/DSU , CSU, DSU ,
WAN
WAN, WAN,
MUX
MUX, MUX,
PBX switch
PBX switch , PBX switch ,
Hub
Hub, hub,
Hub, blue
Hub, blue, hub,
NAT
NAT, NAT,
Network cloud, dark
Network cloud, dark, network cloud,
Network cloud, gold
Network cloud, gold, network cloud,
Network cloud, white
Network cloud, white, cloud,
Network cloud, standard color
Network cloud, standard color, cloud,
Distributed director
Distributed director, distributed director,
Local director
Local director, local director ,
PBX
PBX, PBX,
DPT
DPT, DPT,
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,
The vector stencils library "Logical symbols" contains 49 logical symbols for drawing logical network topology diagrams.
"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]
The icons example "Logical symbols - Vector stencils library" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Computer and Networks solution from the Computer and Networks area of ConceptDraw Solution Park.
www.conceptdraw.com/ solution-park/ computer-and-networks
Coaxial Line Tag
Coaxial  Line Tag, coaxial line tag,
Fiber Optic Line Tag
Fiber Optic Line Tag, fiber optic line tag,
Twisted Pair Line Tag
Twisted Pair Line Tag, twisted pair line tag,
SC2200 Signaling Controller
SC2200 Signaling Controller, SC2200 Signaling Controller,
Bridge
Bridge, bridge,
Network Management Appliance
Network Management Appliance, network management appliance,
Access Server (Communications Server)
Access Server (Communications Server), access server, communications server,
Terminal Server
Terminal Server, terminal server,
Web Browser
Web Browser , Web browser ,
Security Management, Cisco
Security Management, Cisco, security management, Cisco,
Lock and Key
Lock and Key, lock and key,
Lock
Lock, lock,
Key
Key, key,
Relational Database
Relational Database, relational database,
Host
Host, host,
CSU/DSU
CSU/DSU , CSU, DSU ,
WAN
WAN, WAN,
University
University , university ,
Government building
Government building , government building ,
Home Office
Home Office, home office,
Telecommuter House PC
Telecommuter House PC, telecommuter house PC,
Medium Building, Regular
Medium Building, Regular, building,
Headquarters, Subdued
Headquarters, Subdued, headquarters,
House, Regular
House, Regular, house,
Small Business
Small Business , small business ,
Network Connector
Network Connector,
Dynamic Connector
Dynamic Connector,
Line Connector
Line Connector,
Line-curve Connector
Line-curve Connector,
Bus
Bus, bus,
FDDI Ring
FDDI Ring, FDDI ring,
Peer-to-peer
Peer-to-peer, peer-to-peer,
Token-ring
Token-ring, Token-ring,
Star
Star, star,
Comm-link
Comm-link, Comm-Link,
Curved Bus
Curved Bus, curved bus,
Ethernet
Ethernet, Ethernet,
Cloud
Cloud,
Speaker
Speaker, speaker,
Microphone
Microphone , microphone ,
Router
Router, router,
ATM Router
ATM Router, ATM router,
ISDN Switch
ISDN Switch , ISDN switch ,
ATM Switch
ATM Switch , ATM switch ,
ATM/FastGB Etherswitch
ATM/FastGB Etherswitch, ATM GB Etherswitch, Fast GB Etherswitch,
Workgroup Switch
Workgroup Switch, workgroup switch,
Small Hub
Small Hub, small hub,
100BaseT Hub
100BaseT Hub , 100BaseT hub,
CDDI-FDDI
CDDI-FDDI , CDDI-FDDI ,