Common Network Terms (1)• MAC Address - Physical Address of a Device ▫ E.g. “ 08:00:69:02:01:FC ”• IP Address – Logical Address of a Device ▫ e.g. “ 192.168.1.254 ”• Protocol – Set of rules that govern a communication ▫ e.g. TCP, UDP• Subnet ▫ Block of IP Addresses
Common Network Terms (2)• Fast Ethernet ▫ 10/100 Mbits/sec• Gigabit Ethernet ▫ 10/100/1000 Mbits/sec• Power Over Ethernet ▫ Feature that supports a device to pass power along with data on Ethernet Cabling• VLAN ▫ a VLAN is a collection of nodes that are virtually grouped together.
OSI Model• Open Systems Interconnection ( OSI ) is a standard reference model for communication between two end users in a network. The model is used in developing products and understanding networks.
OSI model - Layers Application • Network Process to Application (Email, Internet Explorer) Presentation • Data Format, Ensure Data is readable (JPEG, GIF) Session • Establish, Maintain & Disconnect (Host to Host Chat Session) Transport • End to End Connection, Reliability (TCP, UDP) Network • Network Address, Best Path (IP, Router) Data Link • Access to Media (MAC, Switches, Hub) Physical • Binary Transmission (wires, voltages)
Passive Components Application • UTP Cable • Patch Panel Presentation Session Transport • SFP Module • Fibre Cable Network Data Link Physical
Network Switch Application ▫ Devices that links nodes in a LAN ▫ Layer 2 Device Presentation ▫ Works on MAC Address Session Transport Network Data Link Cisco 2960 Switch Physical
Router Application ▫ Responsible for Routing, Path selection Presentation ▫ Layer 3 Device Session ▫ Works on IP Address Transport Network Cisco 1941 Router Data Link Linksys Router Physical
Multi-Layer Switch Application ▫ Device that switches on OSI layer 2 like an ordinary network switch and provides Presentation extra functions on higher OSI layers. ▫ Inter –VLAN Routing Session Transport Network Data Link Cisco 3560, Cisco 4500 & Cisco 6500 Physical
Wireless Access Point Application ▫ allows devices to connect to a wired network with out the need of physical Presentation cable Session Transport Network Data Link Cisco Aironet 1140, 1260, 1500 Series Physical
Firewall Application ▫ Security Device ▫ Offers protection between Presentation Zones Session ▫ Todays Firewall offers Network to Application Level Protection Transport Network FortiGate UTM Data Link Physical Cisco ASA