Cisco Packet Tracer – video 2: Como crear una red, utilizando 2 Routers de forma rápida y sencilla.

Tech/Product/Concept Summary (Cisco Packet Tracer – 2 Routers Network)

Goal of the tutorial

• Demonstrates how to quickly build and configure a basic network with two routers in Cisco Packet Tracer.
• Walks through:
  • Adding devices
  • Physical cabling
  • Installing router modules (for serial links)
  • Configuring IP addresses on router interfaces

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1) Build the topology (devices)

• Selects two routers and places them.
• Adds switches:
  • One switch per router “side”.
• Adds PCs:
  • Mentions 3 PCs on one side and 3 PCs on the other (total 6 PCs in the full setup).

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2) Physical connections (LAN side)

• Uses direct cable connections:
  • Connects router GigabitEthernet 0/0 to a FastEthernet port on the corresponding switch.
• Connects PCs to each switch using switch FastEthernet ports:
  • PC0–PC2 on Switch0
  • PC3–PC5 on Switch1

Key connection idea: Routers connect to switches via Ethernet (Gigabit to FastEthernet), and PCs connect to those switches via FastEthernet.

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3) Router-to-router physical link (serial WAN side)

• Notes that the routers initially have no serial modules installed.
• Shows the required workflow:
  1. Power off the router
  2. Add/install the required module into the router’s module slot
  3. Power back on
• Connects the routers using a serial cable (using the serial/clock-style connector icon).
  • Connects Router0 Serial0/0 to Router1 Serial0/0

Key concept: A serial link requires installing the correct hardware module in Packet Tracer.

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4) IP addressing plan (example values used)

The instructor uses example subnets resembling a private addressing scheme and references them during configuration:

• 172.16.112.0 (LAN subnet example)
• 172.16.104.0 (other LAN subnet example)
• 172.16.128.0 (used for the serial/WAN link)

Subnet mask used:

• 255.255.255.0 (referenced repeatedly; auto-generated text may be mangled, but the mask is clearly intended)

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5) Router configuration commands (CLI workflow)

• Enters privileged/config mode:
  • enable (implied)
  • configure terminal to enter global configuration mode

Configure Router 0

• Configures interfaces and assigns IPs:

• GigabitEthernet0/0

  • Assigns an IP in the 172.16.112.x subnet
  • Uses the “first usable IP” idea to avoid the .0 network address
  • Applies mask 255.255.255.0
  • Activates the interface (status changes from red to green in Packet Tracer)

• Serial0/0

  • Assigns an IP in the 172.16.128.x subnet
  • Router0 uses … .1
  • Activates the serial interface and saves configuration

Configure Router 1

• Repeats the process:

• GigabitEthernet0/0

  • Gets an IP in the 172.16.104.x subnet

• Serial0/0

  • Gets the corresponding WAN IP:
  • Router1 uses … .2
• Activates interfaces (again expecting red → green) and saves changes

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6) Visual verification in Packet Tracer

• Uses Packet Tracer’s interface indicators:
  • Interfaces change from red to green after correct IP assignment and interface activation (e.g., no shutdown).

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Tutorial conclusion / next step preview

• Concludes that router interfaces are configured and appear correct (red → green).
• Teases that the next video will finish the overall network configuration (details not included here).

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Main speakers / sources

• The instructor of the tutorial video (no specific name provided in the subtitles).
• Mentions a collaborator/name-like reference: “Raúl Tercero” (likely a student/person in the scenario, but not clearly identified as the speaker).