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1 © 2012 InfoComm International Essentials of AV Technology Networking for Data and AV
2 © 2012 InfoComm International Network Essentials 1.Defining a Network 2.Network Connections 3.OSI Reference Model 4.Network Interfaces 5.Internet Protocol 6.Network Addressing 7.Network Components 8.Networking Conclusion 9.Networking for Data and AV Activities
3 © 2012 InfoComm International What is a Network A group of devices connected in a manner that allows communication between the devices LAN WAN WLAN
4 © 2012 InfoComm International Star, Bus, and Ring Topology Star: Connected to a central point Bus: Connected through a single cable Ring: Connected in a continuous loop
5 © 2012 InfoComm International Standards Common platform for understanding and teamwork Standards organizations oANSI oIEEE oISO Ethernet standard IEEE802 (802.x.x)
6 © 2012 InfoComm International Category Cable Speed Cat 1Telephone and doorbell type connections Cat 24 Mbit/s Cat 3up to 16 MHz typically 10Mbit/s Cat 4up to 20 MHz typically 16 Mbit/s Cat 5up to 100 MHz typically 100 Mbit/s Cat 5e up to 100 MHz typically both 100 Mbit/s and 1 Gbit/s Cat 6 up to 250 MHz typically both 100 Mbit/s and 1 Gbit/s Cat 6aup to 500 MHz typically 10Gbit/s Cat 7up to 600 MHz typically 10 Gbit/s Cat 7aup to 1000 MHz suitable for 40 Gbit/s Ethernet Cabling Cable Categories determine speed of wired network connections Category 5, 5e, 6, 6a
7 © 2012 InfoComm International Ethernet Connections Cabling must be connected to the device by attaching some type of connector. 8P8C T568A/B
8 © 2012 InfoComm International Wireless Connections: Wi-Fi 802.11 standard Access points (RF) Distance limitations
9 © 2012 InfoComm International 802.11 Specifications RevisionRelease date Frequency band Typical throughput Max throughput 802.11a October 1999 5 GHz27 Mbit/s72 Mbit/s 802.11b October 1999 2.4 GHz~5 Mbit/s11 Mbit/s 802.11gJune 20032.4 GHz~22 Mbit/s54 Mbit/s 802.11n September 2009 5 GHz and/or 2.4 GHz ~144 Mbit/s 600 Mbit/s
10 © 2012 InfoComm International Wireless Connections: Bluetooth Low cost Short range (10 m) Point to point connections Built in encryption WPAN
11 © 2012 InfoComm International Fiber Optic Connections Single and multi mode Bandwidth (up to 40Gbps /sec) SC and ST connectors Single Mode Multi Mode
12 © 2012 InfoComm International OSI Refence Model Seven layer international standard process Allows for product developments
13 © 2012 InfoComm International Layer (IT Side)Layer (AV use) 7 Provides standard services 6 Encodes and decodes data 5 Controls links between users 4 Management of data packets 3 Routing of packets 2 Defines link operations 1 Defines relationship between devices and cabling 7 Data for Applications 6 Unpackages Data 5 Ensures Data Quality 4 Data Transfer 3 Internet Protocol (IP) 2 Ethernet Standard 1 Cabling/Patchbays OSI and AV
14 © 2012 InfoComm International Network Interface Card (NIC) Connection between device and network MAC is hardware address for the NIC 00:13:CE:D5:1C:21
15 © 2012 InfoComm International MAC Address MAC is hardware address for the NIC uses a 48-bit number, such as: 00:13:CE:D5:1C:21 ofirst part indicates the manufacturer osecond part is a serial number MAC address is one of the lowest levels of communication on a network Notice the MAC address on the NIC. MAC is hardware address for the NIC
16 © 2012 InfoComm International Internet Protocol (IP) Addressing IP Addresses define the device and its location on a network
17 © 2012 InfoComm International Internet Protocol Version 4 (IPv4) Made of four, eight bit "chunks" called octets Example: 192.168.1.25
18 © 2012 InfoComm International Internet Protocol Version 6 (IPv6) Uses eight groups of four hexadecimal numbers Looks like FEDC:BA98:7654:3210:FEDC:BA98:7654:32 10 Can use the MAC address within its numbering scheme
19 © 2012 InfoComm International Subnet Mask Indicates how many devices can be on a network.
20 © 2012 InfoComm International Static IP Addressing Manually assigned IP address Method of assignment varies For devices requiring permanent addresses
21 © 2012 InfoComm International Dynamic IP Addressing Automated process Server leases temporary address (DHCP) Based on pool of allowable addresses
22 © 2012 InfoComm International Domain Name System Keeps track of all equipment on the network Allows assignment of text names to equipment Allows administrators to assign text names to equipment so its easier for people to manage resources.
23 © 2012 InfoComm International Network Switch Collects MAC addresses and stores them in Memory Hubs can't do this Managed and unmanaged devices for a single network
24 © 2012 InfoComm International Network Routers, Gateways, and Bridges Router has switch features can connect multiple networks together Gateways pass traffic to routers routers look to the gateway to find names (DNS addresses) that are not found on the local network. Bridges connects two different types of networks together translates one network protocol to another protocol
25 © 2012 InfoComm International Networking Summary Networks are now a major part of AV It wants to keep those networks secure Dedicated devices and standardization make worldwide communication possible
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