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Introduction to Cisco Routers. A Picture of Router. External Connections on a 2600 Router. Internal Components of a 2600 Router. Internal Components of a Router. WAN Physical Layer. WAN Physical Layer Standards. EIA/TIA-232 EIA/TIA-449 V.24 V.35 X.21 G.703 EIA-530 ISDN
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WAN Physical Layer Standards • EIA/TIA-232 • EIA/TIA-449 • V.24 • V.35 • X.21 • G.703 • EIA-530 • ISDN • T1, T3, E1, and E3 • xDSL • SONET (OC-3, OC-12, OC-48, OC-192)
WAN Data Link Layer Protocols • High-level data link control (HDLC) • Frame Relay • Point-to-Point Protocol (PPP) • Synchronous Data Link Control (SDLC) • Serial Line Internet Protocol (SLIP) • X.25 • ATM • LAPB • LAPD • LAPF
Console Port and AUX Port • The console port and the auxiliary (AUX) port are management ports. • These asynchronous serial ports are not designed as networking ports. • One of these two ports is required for the initial configuration of the router. • The console port is recommended for this initial configuration. • Not all routers have an auxiliary port.
Console Port Connection • When the router is first put into service, there are no networking parameters configured. • To prepare for initial startup and configuration, attach an RS-232 ASCII terminal, or a computer emulating an ASCII terminal, to the system console port. • Then configuration commands can be entered to set up the router. • The router can also be configured from a remote location by dialing to a modem connected to the console or auxiliary port on the router
Connect a PC to a Router • The PC or terminal must support VT100 terminal emulation. Terminal emulation software such as HyperTerminal is usually used. • To connect the PC to a router: • 1. Configure terminal emulation software on the PC for: • The appropriate com port • 9600 baud • 8 data bits • No parity • 1 stop bit • No flow control • 2. Connect the RJ-45 connector of the rollover cable to the router console port. • 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.
Operating Cisco IOS Software • The Cisco IOS (Internetwork Operating System) software uses a command-line interface (CLI) as the traditional console environment. • The IOS is a core technology that extends across most of the Cisco product line. • Its operation details may vary on different internetworking devices.
Overview of Router Modes • 使用者執行模式(User EXEC Mode) • 特權執行模式(Privileged EXEC Mode) • 整體設定(Global configuration) • 界面設定(Interface configuration)
Example (1) of Static Routing What is the setting for Sterling and Waycross?
Example (2) of Static Routing What is the setting for Sterling and Waycross?
Example of Dynamic Routing (RIP) Note: RIP supports only classful network addresses.
References • Data Source: Cisco Networking Academy Programs