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CCNA 2 v3.1 Module 1 WANs and Routers
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Introduction to WANs
• A WAN is a data communications network that spans a large geographic area such as a state, province, or country.
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WAN Devices
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WAN Services
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Data Link Encapsulations
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Internal Configuration Components
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Routers Connected by WAN Technologies
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Path Determination
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Internetwork Routers
• Any internetwork must include the following:
Consistent end-to-end addressing
Addresses that represent network topologies
Best path selection
Dynamic or static routing
Switching
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Academy Approach to Labs
• In the academy lab, all the networks will be connected with serial or Ethernet cables and the students can see and physically touch all the equipment.
• Devices that make up the WAN cloud are simulated by the connection between the back-to-back DTE-DCE cables.
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Router Internal Components
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Router Internal Components
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Internal Components of a 2600 Router
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External Connections on a 2600 Router
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Router External Connections
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Computer or Terminal Console Connection
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Modem Connection to Console or Auxiliary Port
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Console Port Connections
1. Configure terminal emulation software on the PC for the following:
The appropriate com port
9600 baud
8 data bits
No parity
1 stop bit
No flow control
2. Connect a rollover cable to the router console port (RJ-45 connector).
3. Connect the other end of the rollover cable to the RJ-45 to DB-9 adapter
4. Attach the female DB-9 adapter to a PC.
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Eight-Pin Connections for Cisco 2600 Series Routers
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WAN Types
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Router Serial WAN Connectors
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DCE Serial Connections
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Summary