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Intro to Cisco Commands

Intro to Cisco Commands. Lecture # 2B Hassan Shuja 02/21/2006. Cisco Commands. Cisco Commands Question mark next to letter gives you all the commands that start with that letter Question mark after command show all the next possible commands. Baltimore-1#show a?

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Intro to Cisco Commands

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  1. Intro to Cisco Commands Lecture # 2B Hassan Shuja 02/21/2006

  2. Cisco Commands • Cisco Commands • Question mark next to letter gives you all the commands that start with that letter • Question mark after command show all the next possible commands Baltimore-1#show a? access-expression access-lists accounting aliases alps arp async Baltimore-1#show a Baltimore-1#show arp ? | Output modifiers <cr> Baltimore-1#show arp

  3. Cisco Commands • Cisco Commands • Tab Key will complete command • Incomplete Command indicates that statement needs more information • Invalid Input indicates that the command is not recognized Baltimore-1#show ip % Incomplete command. Baltimore-1# Baltimore-1#sh kdf ^ % Invalid input detected at '^' marker. Baltimore-1#

  4. Cisco Commands • Cisco Commands • Ambiguous command indicates that command is not specific enough Baltimore-1#show a % Ambiguous command: "sh a" Baltimore-1#

  5. Cisco Memory • Cisco Memory • Flash • Memory where IOS image is kept • Copies of the configuration can also be kept in this space • NVRAM • Maintains the configuration of the device

  6. Cisco Management • Cisco Access Management • Console Port • A terminal connection attached to a computer • Auxiliary (Aux) port • Used for out-of-band access via a modem • VTY Virtual terminal line (Telnet) • Access to device through telnet session

  7. Cisco Configuration • Saving Configuration • Running Configuration • The configuration that is used while the system is on • Start-up Configuration • The configuration that is loaded onto the system when the system is started • Once started, the configuration becomes running configuration • copy running-config startup-config is the syntax used to save the configuration

  8. Cisco Cabling • Cabling • Straight-through Cabling • In a straight-through cable, the colored wires are in the same sequence at both ends of the cable

  9. Cisco Cabling • Cabling • Crossover Cable • In a crossover cable, the first (far left) colored wire at one end of the cable is the third colored wire at the other end of the cable

  10. Cisco Cabling • Cabling • Rolled Cable • In a rolled cable, the colored wires at one end of the cable are in the reverse sequence of the colored wires at the other end of the cable

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