Cisco S2-C2

1
Cisco S2-C2

• Wide Area Networks

2
WANS

• Operate at slower speeds over wide area
• Use RBOC (approximately 80 of data
  communications)
• Use serial connections
• Devices include
• Routers, Modems, ATM Switches, Communication
  Servers
• Provide full- and part-time connectivity

3
WAN Physical Standards

• EIA/TIA-232
• EIA/TIA-449
• V.24
• V.35
• X.21
• G.703
• EIA-530

4
WAN Protocols

• HDLC High Level Data Link Control
• PPP Point to Point
• ISDN Integrated Services Digital NW
• Frame Relay
• ATM Asynchronous Transmission Mode

5
WAN Physical Layer

• WAN physical layer describes the interface
  between the data terminal equipment (DTE) and the
  data circuit-terminating equipment (DCE).
• Typically, the DCE is the service provider and
  the DTE is the attached device.
• Services can be offered to the DTE through a
  modem or a CSU/DSU

6
WAN Technologies

• POTS, ISDN, X.25, Frame Relay
• ATM, SMDS, T1, T3 (E1, E3 in Europe)
• SDSL, Cable Modem, Dial-up Modem
• Sonet, Terrestrial Wireless, Satellite Wireless
• Refer to chart to study speeds (bandwidth) and
  comments both are important

7
Router Basics

• ROM startup diagnostics, stores backup O/S
• RAM where all processing takes place- stores
  running-config
• NVRAM stores startup-config
• Flash stores O/s and microcode
• Interface connections through which data and
  packets enter router

8
Internetwork Services

• consistent end-to-end addressing
• addresses that represent network topologies
• best path selection
• dynamic routing
• switching

9
Lab

• Subnet
• Develop Router Topology
• Startup Router