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"A computer network diagram is a schematic depicting the nodes and connections amongst nodes in a computer network or, more generally, any telecommunications network. ...
Readily identifiable icons are used to depict common network appliances e.g. Router, and the style of lines between them indicate the type of connection. Clouds are used to represent networks external to the one pictured for the purposes of depicting connections between internal and external devices, without indicating the specifics of the outside network. ...
At different scales diagrams may represent various levels of network granularity. At the LAN level, individual nodes may represent individual physical devices, such as hubs or file servers, while at the WAN level, individual nodes may represent entire cities. In addition, when the scope of a diagram crosses the common LAN/ MAN/ WAN boundaries, representative hypothetical devices may be depicted instead of showing all actually existing nodes." [Computer network diagram. Wikipedia]
The computer network diagram template for the ConceptDraw PRO diagramming and vector drawing software is included in the Computer and Networks solution from the Computer and Networks area of ConceptDraw Solution Park.
Computer network diagram template
Computer network diagram template, wireless router, switch, server, laptop computer, notebook, PC, Internet, 1U server,

How To use Switches in Network Diagram

Special libraries of highly detailed, accurate shapes and computer graphics, servers, hubs, switches, printers, mainframes, face plates, routers etc.
"A local area network (LAN) is a computer network that interconnects computers in a limited area such as a home, school, computer laboratory, or office building using network media. The defining characteristics of LANs, in contrast to wide area networks (WANs), include their smaller geographic area, and non-inclusion of leased telecommunication lines. Ethernet over twisted pair cabling, and Wi-Fi are the two most common technology standards currently used to build LANs." [Local area network. Wikipedia]
This local area network (LAN) topology diargam example 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.
LAN topology diagram
LAN topology diagram, wireless router, switch, server, scanner, router, radio waves, laptop computer, inkjet printer, iPhone 4, desktop PC, cloud, IP phone,
"Network planning and design is an iterative process, encompassing topological design, network-synthesis, and network-realization, and is aimed at ensuring that a new telecommunications network or service meets the needs of the subscriber and operator. Network planning process involves three main steps: 1) Topological design: This stage involves determining where to place the components and how to connect them. 2) Network-synthesis: This stage involves determining the size of the components used, subject to performance criteria such as the Grade of Service (GoS). 3) Network realization: This stage involves determining how to meet capacity requirements, and ensure reliability within the network." [Network planning and design. Wikipedia]
This computer network system design diagram example 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.
Network system design
Network system design, workstation, wireless router, switch, smartphone, server, laptop computer, iPhone 4, hardware firewall, desktop PC, cloud, ADSL modem,
The vector stencils library "Cisco network topology" contains 89 symbols of Cisco network devices and design elements for drawing computer network topology diagrams.
"There are two basic categories of network topologies:
(1) Physical topologies,
(2) Logical topologies.
The shape of the cabling layout used to link devices is called the physical topology of the network. This refers to the layout of cabling, the locations of nodes, and the interconnections between the nodes and the cabling. The physical topology of a network is determined by the capabilities of the network access devices and media, the level of control or fault tolerance desired, and the cost associated with cabling or telecommunications circuits.
The logical topology in contrast, 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." [Network topology. Wikipedia]
The symbols example "Cisco network topology - 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,
Broadband router
Broadband router , broadband router,
Router firewall
Router firewall, router with firewall ,
Wireless router
Wireless router, wireless router,
Workgroup switch
Workgroup switch, workgroup switch,
ATM switch
ATM switch, ATM switch ,
ISDN switch
ISDN switch, ISDN switch,
Multilayer switch
Multilayer switch, multilayer switch ,
Protocol translator
Protocol translator, protocol translator,
Communications server
Communications server, communications server, access server,
Transpath
Transpath, transpath,
Bridge
Bridge, bridge,
Terminal server
Terminal server, terminal server,
Route switch processor
Route switch processor, route switch processor,
Content engine (cache director)
Content engine (cache director), content engine, cache director,
Management engine (ME 1100)
Management engine (ME 1100), Management Engine, ME 1100,
Switch processor
Switch processor, switch processor,
ITP
ITP, ITP,
Voice gateway
Voice gateway, voice gateway,
BBSM
BBSM, BBSM,
ATA
ATA, ATA,
SIP Proxy server
SIP Proxy server, SIP Proxy server,
NetRanger
NetRanger, netranger,
Cisco 1000
Cisco 1000, Cisco 1000,
IP
IP, IP,
System controller
System controller, system controller,
ACE
ACE, ACE,
Directory server
Directory server, directory server,
ADM
ADM, ADM,
Cisco Unity Express
Cisco Unity Express, Cisco Unity Express,
Unity server
Unity server, unity server,
Cisco security
Cisco security, Cisco security,
CallManager
CallManager, callmanager, call manager,
DSLAM
DSLAM, DSLAM,
H.323
H.323, H.323 ,
CDM (Content Distribution Manager)
CDM (Content Distribution Manager), CDM, content distribution manager,
ICM
ICM, ICM,
Access point
Access point, access point,
Wireless bridge
Wireless bridge, wireless bridge,
Wireless connectivity
Wireless connectivity, wireless connectivity,
Guard
Guard, guard,
Mobile access router
Mobile access router, mobile access router,
Carrier Routing System (CRS)
Carrier Routing System (CRS), Carrier Routing System, CRS,
Vault
Vault, vault,
Workstation
Workstation, workstation,
PC
PC, PC,
Macintosh
Macintosh, Macintosh,
Cloud, gold
Cloud, gold, network cloud,
Cloud, white
Cloud, white, cloud,
Cloud, standard color
Cloud, standard color, cloud,
Cisco security management
Cisco security management, security management,
PBX
PBX, PBX,
DPT
DPT, DPT,
Government building
Government building, government building ,
Headquarters, blue
Headquarters, blue, headquarters, generic building,
Router in building
Router in building, router in building,
Man
Man, man,
Woman
Woman, woman,
Workgroup switch, subdued
Workgroup switch, subdued, workgroup switch,
Router, subdued
Router, subdued, router,
File server
File server, file server,
Firewall, horizontal
Firewall, horizontal, firewall,
Firewall, vertical
Firewall, vertical, firewall,
Firewall, vertical, subdued
Firewall, vertical, subdued, firewall,
Lock
Lock, lock,
Key
Key, key,
Lock and key
Lock and key, lock, key, lock and key,
Car
Car, car,
Truck
Truck, truck,
File cabinet
File cabinet, file cabinet,
Breakout box
Breakout box, breakout box,
Breakout box, blue
Breakout box, blue, breakout box,
Host
Host, host,
Relational database
Relational database, relational database,  database,
Modem
Modem, modem,
BBS (Bulletin Board System)
BBS (Bulletin Board System), BBS, bulletin board system,
Satellite
Satellite, satellite,
Satellite dish
Satellite dish, satellite dish,
UPS
UPS, UPS,
RPS
RPS, RPS,
MAU
MAU, MAU,
PAD
PAD, PAD,
PAD X.28
PAD X.28, PAD X.28,
Diskette
Diskette, diskette,
Contact center
Contact center, contact center,
Page icon
Page icon, page icon,
Antenna
Antenna, antenna,
Antenna, blue
Antenna, blue, antenna,
Radio tower
Radio tower, radio tower,

Network Gateway Router

Special libraries of highly detailed, accurate shapes and computer graphics, servers, hubs, switches, printers, mainframes, face plates, routers etc.
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.
ISG network topology diagram
ISG network topology diagram, workgroup switch, server, file server, router, route, switch, processor , PC,
The vector stencils library "Computer network" contains 51 symbols of computer network devices and equipment for drawing computer network diagrams.
"Network Mapping Software.
A number of software tools exist to design computer network diagrams / or generate visual maps of networks, servers, storage, services, data centers, and other peripherals. Broadly, there are two types of software tools - those that help create diagrams manually and those that generate them using automated / semi-automated approaches.
Type of Software.
(1) Manual - allows users to design and draw logical and physical topology diagrams by manually placing icons and connections.
(2) Automated - generate topology diagrams / maps by traversing the network and automatically discovering resident devices or by importing network data." [Comparison of network diagram software. Wikipedia]
ConceptDraw PRO is the software for manual design of computer network diagrams. The solutions of the Computer and Networks area in ConceptDraw Solution Park extend ConceptDraw PRO with vector stencils libraries, templates and examples for creating the computer network diagrams.
The symbols example "Computer network - 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
Laptop
Laptop, laptop computer,
Desktop computer
Desktop computer, desktop PC,
Firewall
Firewall, firewall,
Bus
Bus, bus,
Ethernet
Ethernet, Ethernet,
Star network
Star network, star,
FDDI Ring
FDDI Ring, FDDI ring,
Token-ring
Token-ring, Token-ring,
Comm-link
Comm-link, Comm-link,
Modem
Modem, modem,
Laser printer
Laser printer, laser printer,
Inkjet printer
Inkjet printer, inkjet printer,
Image scanner
Image scanner, scanner,
City
City, city,
Ethernet hub
Ethernet hub, hub,
Wireless router
Wireless router, wireless router,
Network switch
Network switch, switch,
iPod Classic
iPod Classic, iPod Classic,
iPhone/ iPod Touch
iPhone/ iPod Touch, iPhone, iPod Touch,
Xserve RAID
Xserve RAID, Xserve RAID,
XServe
XServe, XServe,
Apple Thunderbolt Display
Apple Thunderbolt Display, Apple display,
Data store
Data store, data,
Mac Pro
Mac Pro, Mac Pro,
iMac
iMac, iMac desktop,
RAID
RAID, RAID drive,
Mainframe
Mainframe, mainframe,
Rack-mountable server
Rack-mountable server, server,
Server
Server, server,
PDA
PDA, PDA,
Cloud
Cloud, cloud,
Computer monitor
Computer monitor, monitor,
Workstation
Workstation, workstation,
Router
Router, router,
IP Phone
IP Phone, IP phone,
Fax
Fax, fax,
Mobile phone
Mobile phone, cell phone,
Smartphone
Smartphone, smartphone,
Compact Disk
Compact Disk, compact disk,
Mouse
Mouse, mouse,
Apple Wireless Mouse
Apple Wireless Mouse, Apple wireless mouse,
Computer keyboard
Computer keyboard, keyboard,
Apple Keyboard
Apple Keyboard, Apple keyboard,
Radio tower
Radio tower, radio tower,
Satellite dish
Satellite dish, satellite dish,
Satellite
Satellite, satellite,
Webcam
Webcam, webcam,
AirPort Extreme
AirPort Extreme, AirPort Extreme,
Airport Express
Airport Express, Airport Express,
MacBook
MacBook, MacBook,
iPhone 4
iPhone 4, iPhone 4,
The vector stencils library "Network hardware" contains 27 clipart images and symbols of network equipment for drawing computer network diagrams.
"Networking hardware may also be known as network equipment or computer networking devices. Units which are the last receiver or generate data are called hosts or data terminal equipment.
All these terms refer to devices facilitating the use of a computer network. Specifically, they mediate data in a computer network. ...
Typically, networking hardware includes gateways, routers, network bridges, switches, hubs, and repeaters. But it also includes hybrid network devices such as multilayer switches, protocol converters, bridge routers, proxy servers, firewalls, network address translators, multiplexers, network interface controllers, wireless network interface controllers, modems, ISDN terminal adapters, line drivers, wireless access points, networking cables and other related hardware.
The most common kind of networking hardware today is a copper-based Ethernet adapter because of its standard inclusion on most modern computer systems. Wireless networking has, however, become increasingly popular, especially for portable and handheld devices.
Other hardware prevalent in computer networking includes data center equipment (such as file servers, database servers and storage areas), network services (such as DNS, DHCP, email, etc.) as well as devices which assure content delivery.
Taking a wider view, mobile phones, PDAs and even modern coffee machines may also be considered networking hardware. As technology advances and IP-based networks are integrated into building infrastructure and household utilities, network hardware will becomes an ambiguous term owing to the vastly increasing number of "network capable" endpoints." [Networking hardware. Wikipedia]
The clip art example "Network hardware -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
Rack
Rack, rack,
Patch Panel 48
Patch Panel 48, Patch Panel,
Modem
Modem, modem,
Switch
Switch, switch,
Hub
Hub, hub,
Router
Router, router,
AirPort Extreme
AirPort Extreme, AirPort Extreme,
Xserve RAID
Xserve RAID, Xserve RAID,
Server
Server, server,
Server
Server, server,
RAID Drive
RAID Drive, RAID drive,
Patch bay
Patch bay, patch bay,
UPS
UPS, UPS,
Airport Express
Airport Express, Airport Express,
Wireless router
Wireless router, wireless router,
ADSL modem
ADSL modem, ADSL modem,
Mac Pro
Mac Pro, Mac Pro,
Power Mac G5
Power Mac G5, Power Mac,
Power Mac G4 Cube
Power Mac G4 Cube, Power Mac,
XServe
XServe, XServe,
Patch Panel 24
Patch Panel 24, Patch Panel,
AirPort Extreme/ Time Capsule
AirPort Extreme/ Time Capsule, AirPort Extreme, Time Capsule,
Switch (8 port)
Switch (8 port), switch, 8 port,
Switch (16 port)
Switch (16 port), switch, 16 port,
Switch (24 port)
Switch (24 port), switch, 24 port,
Switch (48 port)
Switch (48 port), switch, 48 port,
Patch Panel (24 port)
Patch Panel (24 port), Patch Panel, 24 port,

Network Hubs

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

Cisco networking, Cisco network icons, Cisco icon Cisco Network Diagrams

Cisco networking, Cisco network icons, Cisco icon
Cisco Network Diagrams solution extends ConceptDraw DIAGRAM with the best characteristics of network diagramming software. Included samples, templates and libraries of built-in standardized vector Cisco network icons and Cisco symbols of computers, network devices, network appliances and other Cisco network equipment will help network engineers, network designers, network and system administrators, as well as other IT professionals and corporate IT departments to diagram efficiently the network infrastructure, to visualize computer networks topologies, to design Cisco computer networks, and to create professional-looking Cisco Computer network diagrams, Cisco network designs and schematics, Network maps, and Network topology diagrams in minutes.
"Network planning and design is an iterative process, encompassing topological design, network-synthesis, and network-realization, and is aimed at ensuring that a new telecommunications network or service meets the needs of the subscriber and operator. Network planning process involves three main steps: 1) Topological design: This stage involves determining where to place the components and how to connect them. 2) Network-synthesis: This stage involves determining the size of the components used, subject to performance criteria such as the Grade of Service (GoS). 3) Network realization: This stage involves determining how to meet capacity requirements, and ensure reliability within the network." [Network planning and design. Wikipedia]
This computer network system design diagram example 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.
Network system design
Network system design, workstation, wireless router, switch, smartphone, server, laptop computer, iPhone 4, hardware firewall, desktop PC, cloud, ADSL modem,
"A computer network diagram is a schematic depicting the nodes and connections amongst nodes in a computer network or, more generally, any telecommunications network. ...
Depending on whether the diagram is intended for formal or informal use, certain details may be lacking and must be determined from context. ...
At different scales diagrams may represent various levels of network granularity. At the LAN level, individual nodes may represent individual physical devices, such as hubs or file servers, while at the WAN level, individual nodes may represent entire cities. In addition, when the scope of a diagram crosses the common LAN/ MAN/ WAN boundaries, representative hypothetical devices may be depicted instead of showing all actually existing nodes." [Computer network diagram. Wikipedia]
The Cisco computer network diagram example "Network organization chart" 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.
Cisco network diagram
Cisco network diagram, workgroup switch, software based router, file server, application server, router, protocol translator, optical fiber, network management appliance, network cloud, MicroWeb Server,

What is a Local Area Network?
Examples of LAN Diagrams

Local Area Network (LAN) is a network which consists of computers and peripheral devices connected each other and to the local domain server, and covers a little territory or small number of buildings, such as home, school, laboratory, office, etc. LAN serves for few hundreds of users. It includes many cables and wires, and demands to design previously a Network diagram. All local area network devices can use the shared printers and disk storage. ConceptDraw DIAGRAM is a perfect network diagramming software with examples of LAN Diagrams, templates and predesigned vector objects. ConceptDraw DIAGRAM is the ideal choice for network engineers and network designers who need to draw fast and easy Local Area Network Diagrams, for IT specialists, developers and other IT professionals which need to visualize the communication schemes of LAN and visually document the LAN's physical structure and arrangement in houses, offices and other buildings. Ready-to-use vector objects from Computer Network Diagrams solution will help you design LAN diagrams in minutes.
How to Draw a Computer Network
How to Draw a Computer Network

network topology diagram software, network icons, network diagram template, networking icons available, how to draw a network diagram Computer Network Diagrams

network topology diagram software, network icons, network diagram template, networking icons available, how to draw a network diagram
Computer Network Diagrams solution extends ConceptDraw DIAGRAM software with samples, templates and libraries of vector icons and objects of computer network devices and network components to help you create professional-looking Computer Network Diagrams, to plan simple home networks and complex computer network configurations for large buildings, to represent their schemes in a comprehensible graphical view, to document computer networks configurations, to depict the interactions between network's components, the used protocols and topologies, to represent physical and logical network structures, to compare visually different topologies and to depict their combinations, to represent in details the network structure with help of schemes, to study and analyze the network configurations, to communicate effectively to engineers, stakeholders and end-users, to track network working and troubleshoot, if necessary.
"A computer network diagram is a schematic depicting the nodes and connections amongst nodes in a computer network or, more generally, any telecommunications network. ...
Readily identifiable icons are used to depict common network appliances e.g. Router, and the style of lines between them indicate the type of connection. Clouds are used to represent networks external to the one pictured for the purposes of depicting connections between internal and external devices, without indicating the specifics of the outside network. ...
At different scales diagrams may represent various levels of network granularity. At the LAN level, individual nodes may represent individual physical devices, such as hubs or file servers, while at the WAN level, individual nodes may represent entire cities. In addition, when the scope of a diagram crosses the common LAN/ MAN/ WAN boundaries, representative hypothetical devices may be depicted instead of showing all actually existing nodes." [Computer network diagram. Wikipedia]
The computer network diagram template for the ConceptDraw PRO diagramming and vector drawing software is included in the Computer and Networks solution from the Computer and Networks area of ConceptDraw Solution Park.
Computer network diagram template
Computer network diagram template, wireless router, switch, server, laptop computer, notebook, PC, Internet, 1U server,
The vector stencils library "Computers and network isometric" contains 56 3D clipart images of computer and network devices and equipment for drawing network diagrams.
The clip art example "Computers and network isometric - 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.
Laptop
Laptop, laptop computer, notebook,
DDCS
DDCS, DDCS, Distributed Data Communications Server,
Server
Server, server,
Webcam
Webcam, Web-camera,
Wireless Network Storage
Wireless Network Storage, wireless network storage,
Personal computer
Personal computer, PC,
VoIP phone
VoIP phone, IP phone,
Fax
Fax, fax,
Plotter
Plotter, plotter,
Mobile phone
Mobile phone, cellular phone, mobile phone,
Feature phone
Feature phone, cellular phone, mobile phone,
Printer
Printer, printer,
Satellite dish
Satellite dish, satellite dish,
Satellite antenna
Satellite antenna, satellite antenna,
Automatic-tracking satellite dish
Automatic-tracking satellite dish, satellite dish,
Wireless access point
Wireless access point, wireless access point,
Wireless router
Wireless router, wireless router,
Router
Router, router,
Network switch
Network switch, switch,
Network device
Network device, device,
Mobile GPS Terminal
Mobile GPS Terminal, mobile GPS terminal,
GPS phone
GPS phone, GPS phone,
Television antenna
Television antenna, antenna,
Radio tower
Radio tower, wireless cell tower,
Base station
Base station , base station ,
Satellite
Satellite, satellite,
In-vehicle satellite telecommunication
In-vehicle satellite telecommunication, in-vehicle station,
Satellite dishes on ship
Satellite dishes on ship , ship,
Airplane
Airplane, airplane,
Internet
Internet, Internet,
Man
Man, man,
Woman
Woman, woman,
Call-center
Call-center, call-center,
Honeycomb
Honeycomb, honeycomb,
Mountain
Mountain, mountain,
Radio waves
Radio waves, radio waves,
Radio waves
Radio waves, radio waves,
Tower block
Tower block, high-rise building,
Office building
Office building, office building,
House
House, house,
House
House, house,
Globe
Globe, globe, Internet,
Wireless security camera
Wireless security camera, camera,
Truck
Truck, truck,
Tree
Tree, tree,
Conifer tree
Conifer tree, fir-tree,
1U hub / switch
1U hub / switch, 1U hub switch,
2U hub / switch
2U hub / switch, 2U hub switch,
1U server
1U server, 1U server,
2U Server
2U Server, 2U server,
3U Server
3U Server, 3U server,
4U Server
4U Server, 4U server,
Communications satellite
Communications satellite, satellite,
Car
Car, car,
Radio waves
Radio waves, radio waves,
Firewall
Firewall, firewall,
"A computer network or data network is a telecommunications network that allows computers to exchange data. In computer networks, networked computing devices (network nodes) pass data to each other along data connections. The connections (network links) between nodes are established using either cable media or wireless media. The best-known computer network is the Internet.
Network devices that originate, route and terminate the data are called network nodes. Nodes can include hosts such as servers and personal computers, as well as networking hardware. Two devices are said to be networked when a device is able to exchange information with another device." [Computer network. Wikipedia]
This computer communication network diagram example 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.
Network diagram
Network diagram, workstation, switch, router, hub, firewall, cloud, RAID drive, Comm-link,

Network Glossary Definition

The network glossary contains a complete list of network, computer-related and technical terms in alphabetic order, explanations and definitions for them, among them there are words well known for you and also specific, rare-used, uncommon or newly introduced terms. This specialized glossary, also known as a vocabulary, is the best in its field and covers in details the various aspects of computer network technologies. This glossary was developed by specialists using the practical experience and many useful sources to help the ConceptDraw users in their work, you can read and learn it from the screen on-line or print, it can be also used as a perfect educational guide or tutorial. ConceptDraw DIAGRAM software extended with Computer and Networks solution is easy to draw various types of Network diagrams, Network topology diagrams, Computer networking schematics, Network maps, Cisco network topology, Computer network architecture, Wireless networks, Vehicular networks, Rack diagrams, Logical, Physical, Cable networks, etc. Desktop ConceptDraw DIAGRAM Software is a good Visio for Mac Os X replacement. It gives you rich productivity and quality of the produced diagrams.
How to Draw a Computer Network
How to Draw a Computer Network

Cisco Products Additional. Cisco icons, shapes, stencils and symbols

The ConceptDraw vector stencils library Cisco Products Additional contains equipment symbols for drawing the computer network diagrams.