Course Name
LAN/WAN Fundamentals
Course Number
LS 122 107
Course Duration
2 days
Course Description
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Course Objective
• Describe the seven-layer model and realize how it applies to the
real world.
• Evaluate and describe WAN technologies.
• Troubleshoot WANS.
• Use WANS to interconnect LANS.
• Describe what Ethernet is and how it works.
• Install Ethernet networks.
• Troubleshoot Ethernet networks.
• Analyze Ethernet packets.
• Design Ethernet networks.
• Recognize the uses of Hubs, Bridges, switches and routers
Target Audience
Network administrators, Network operators. Those wishing to find
out more about how their WAN works , and those wishing to find
out more about how their LAN works
Prerequisites
Intro to Data communications & networking
Course Modules
• Introduction
LANs, MANS and WANS. Protocols, the OSI seven layer model, ITUT, ETSI, DTE, DCE, and the overall picture.
A hand on Introduction to Wide Area Networks.
A comprehensive look at Ethernet, the main LAN protocol.
• WANS
Dial up vs. Dedicated vs. packet switched networks and when to use
them. Packet switching vs. circuit switching. Common WAN terms.
• What is Ethernet?
LANS, What is Ethernet?, history, standards, the OSI reference
model, how Ethernet works, CSMA/CD.
Ethernet Cabling
UTP, cat 3,4,5, Cat 5e, Cat 6, Cat 7, fiber optic cable, MMF, SMF.
Exercise: Making a cable.
• Ethernet layer 2
Overview, NICS, device drivers, MAC addresses, broadcasts,
multicasts, frame formats, Ether II, 802.3, 802.2, SNAP,
compatibility, Ethernet type numbers, Ethernet multicast addresses,
Ethernet vendor codes. Exercise: Installing Ethernet components,
analyzing MAC headers.
• IP and Ethernet
ARP. Exercise: Analyzing ARP packets.
• Ethernet extensions
Full/half duplex, auto negotiation, flow control methods, 802.3ad,
802.3af, 802.3ah. Exercise: Configuration of full/half duplex.
• Ethernet speed enhancements
Encoding, Carrier extension, packet bursting, jumbo frames.
• Prioritization
802.1P, 802.1Q, TOS, WRR, QOS, VLANs. Exercise: 802.1p testing.
• Interconnecting LANS
Broadcast domains, Collision domains, What are bridges,
transparent bridging, What are switches? STP, VLANS, What are
routers? Layer 3 switches, Connecting Ethernet to the WAN.
Exercise: STP, Analyzing Ethernet frames in a routed architecture.
• Troubleshooting and maintaining Ethernet
Utilizations, performance, TDR and other testers, bottlenecks,
statistics, RMON. Exercise: Monitoring performance,
troubleshooting tools.