【Cisco Packet Tracer】—— IOS CLI for beginners

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In order to learn the Cisco IOS, you need to get a copy of Cisco Packet Tracer for playing with. You may browser the Link.

The following four Youtube videos are provided to you for learning:

danscourses, "Cisco IOS CLI for beginners - Part 1" Link
danscourses, "Cisco IOS CLI for beginners - Part 2" Link
danscourses, "Cisco IOS CLI for beginners - Part 3" Link
danscourses, "Cisco IOS CLI for beginners - Part 4" Link

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Use a console cable (RS232 serial communication port, one side is RJ45, one side DB9) to connect the console port of a router, it gives

R1>?
Exec commands:
  <1-99>      Session number to resume
  connect     Open a terminal connection
  disable     Turn off privileged commands
  disconnect  Disconnect an existing network connection
  enable      Turn on privileged commands
  exit        Exit from the EXEC
  logout      Exit from the EXEC
  ping        Send echo messages
  resume      Resume an active network connection
  show        Show running system information
  ssh         Open a secure shell client connection
  telnet      Open a telnet connection
  terminal    Set terminal line parameters
  traceroute  Trace route to destination
R1>

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Enter <enabe>, it gives

Exec commands:
  <1-99>      Session number to resume
  auto        Exec level Automation
  clear       Reset functions
  clock       Manage the system clock
  configure   Enter configuration mode
  connect     Open a terminal connection
  copy        Copy from one file to another
  debug       Debugging functions (see also 'undebug')
  delete      Delete a file
  dir         List files on a filesystem
  disable     Turn off privileged commands
  disconnect  Disconnect an existing network connection
  enable      Turn on privileged commands
  erase       Erase a filesystem
  exit        Exit from the EXEC
  logout      Exit from the EXEC
  mkdir       Create new directory
  more        Display the contents of a file
  no          Disable debugging informations
  ping        Send echo messages
  reload      Halt and perform a cold restart
  resume      Resume an active network connection
  rmdir       Remove existing directory
  setup       Run the SETUP command facility
  show        Show running system information
  ssh         Open a secure shell client connection
  telnet      Open a telnet connection
  terminal    Set terminal line parameters
  traceroute  Trace route to destination
  undebug     Disable debugging functions (see also 'debug')
  write       Write running configuration to memory, network, or terminal
R1#

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Configure Teminal


R1#configure terminal
Enter configuration commands, one per line.  End with CNTL/Z.
R1(config)#?
Configure commands:
  aaa              Authentication, Authorization and Accounting.
  access-list      Add an access list entry
  banner           Define a login banner
  boot             Modify system boot parameters
  cdp              Global CDP configuration subcommands
  class-map        Configure Class Map
  clock            Configure time-of-day clock
  config-register  Define the configuration register
  crypto           Encryption module
  do               To run exec commands in config mode
  enable           Modify enable password parameters
  end              Exit from configure mode
  exit             Exit from configure mode
  hostname         Set system's network name
  interface        Select an interface to configure
  ip               Global IP configuration subcommands
  line             Configure a terminal line
  logging          Modify message logging facilities
  no               Negate a command or set its defaults
  ntp              Configure NTP
  policy-map       Configure QoS Policy Map
  priority-list    Build a priority list
  privilege        Command privilege parameters
  queue-list       Build a custom queue list
  radius-server    Modify Radius query parameters
  router           Enable a routing process
  service          Modify use of network based services
  snmp-server      Modify SNMP engine parameters
  tacacs-server    Modify TACACS query parameters
  username         Establish User Name Authentication
R1(config)#
R1#
%SYS-5-CONFIG_I: Configured from console by console

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是的！非常方便，现在都是简单用，很多功能都不会，估计要花点时间去学习。归不得有些member有了CCNA后，去set RouterOS，是比较方便，因为member都有networking的concept。只不过有些名字不一样，位置也不一样，他们很快就会上手。