Module 1 - Video 2 Study Notes

  • Overview of Packet Tracer Exercise

    • Write down the notes from the video.
    • Complete a Packet Tracer exercise; upload both the notes and the completed Packet Tracer.

  • Key Commands for Networking

    • Show Version Command

    • Displays key information about the system including:

      • iOS file name
      • Amount of RAM
      • NVRAM details
      • Configuration register value (e.g., 2102, 2142)

    • Show History Command

    • Displays the history of commands entered in the CLI.

    • Show IP Interface Command

    • To display interface details, including IP addresses.

    • Show MAC Address Table

    • Displays MAC addresses and associated ports on the switch.

    • Enabling SSH on the Switch

    • Requires iOS to be running a K9 image, checked with the Show Version command.

  • Basic Router Configuration

    • Loopback Address

    • Described as a logical interface that is always up - used for testing.

    • Using the Pipe with Show Commands

    • Example: show running-config | include vty - filters output to show only relevant lines.

  • Setting Up Packet Tracer Network

    • Required Devices:
    • 1941 Router
    • 2960 Switch
    • Two PCs (PC0, PC1)
    • Connections
    • Use straight-through cables for connections (e.g., connect PC's Fast Ethernet 0/1 to Switch's Gigabit Ethernet 0/1).
    • Use crossover cables if connecting switch to switch or switch to router.

  • Switch Configuration

    • Access the switch CLI:

    • Issue commands such as enable, configure terminal (config T), and set hostname (hostname SW1).

    • Check operating system using the show version:

    • Example response will show 2960 switch and details about version 12.x.

    • VLAN Configuration

    • Default VLAN is VLAN 1. It is unmodifiable (cannot change/delete).

    • To create VLAN 99:

      • Command: vlan 99 , then use exit to return to global configuration.

    • Creating SVI for VLAN 99

    • Command:

      • interface VLAN 99
      • Assign an IP address: ip address 192.168.10.1 255.255.255.0
      • Optionally: no shutdown to activate.

    • Managing VLAN Membership

    • Move port 18 to VLAN 99:

      • Command Sequence:
      • Enter configuration mode config T
      • Access the interface: interface FA0/18
      • Change switching mode: switchport mode access
      • Assign VLAN: switchport access vlan 99

    • Verify VLAN membership: show vlan (check that port 18 is listed under VLAN 99).

  • Configuring PCs

    • PC Configuration
    • Assign IP address and default gateway for PC1 in VLAN 99:
      • Example: 192.168.10.3/24, with 192.168.10.1 as default gateway.
    • Assign IP address and default gateway for PC0 in VLAN 1:
      • Example: 192.168.10.4/24, with 192.168.10.1 as default gateway.

  • Telnet Configuration

    • Configure VTY lines for telnet:
    • Command: line vty 0 15
    • Set password: password cisco
    • Enable login: login
    • Set enable secret password: enable secret cisco1.

  • Router Configuration

    • Connect to the router's console:
    • General commands include:
      • enable, config t
      • Disable IP domain lookup: no ip domain-lookup
      • Set hostname (e.g., hostname R1).
    • Configure Gigabit Ethernet Interface:
    • Assign IP address: ip address 192.168.10.1 255.255.255.0
    • Command to enable the interface: no shutdown.
    • Describe the interface: description Management VLAN Gateway.

  • Verification of Setup

    • Issue a final show version on both switch and router to confirm configuration.
    • Check that all configurations are saved and functional, including accessible management VLANs and inter-device communication requirements.