Applying Subnet Networks to Network Devices - CCNA 2: Day 2

Dans IT Network

21 Mar 202408:15

Summary

TLDRIn this instructional video, the host guides viewers through the process of configuring IP addresses for three subnetted networks. The tutorial covers setting up IP addresses and subnet masks on various devices, including PCs and routers, and highlights the importance of default gateways. The host also demonstrates the use of the command line interface for configuring network interfaces and explains the concept of 'destination host unreachable' due to the lack of routing between certain networks. The video concludes with a teaser for the next tutorial, which will focus on static routes and default routing.

Takeaways

😀 The video is a tutorial on configuring IP addresses for a network with three subnetted networks.
🔍 The default gateway for Network 1 is set to 1.1, and the PC in this network is assigned IP address 1.2.
📍 For Network 2, the router is assigned IP address 1.65 and the next router is assigned 1.66.
🔢 Network 3 uses 1.129 as the default gateway for the router and the PC is assigned IP address 1.130.
💡 A subnet mask of 255.255.255.192 is used for all IP addresses due to the networks being subnetted with a /26.
🛠️ The tutorial involves configuring interfaces on routers and PCs, including setting IP addresses and enabling interfaces.
🔗 The router's serial interface (DCE) requires a clock rate to be set, while the gigabit interface (DTE) does not.
🔄 The process includes saving configurations on routers to retain the set IP settings.
🚀 After setting up the IP addresses, a ping test is performed to check connectivity between PCs.
🚫 The ping test fails due to the lack of routing information between the networks on the routers.
🔄 The next tutorial will cover configuring static routes or default routes to resolve the connectivity issue.

Q & A

What was the purpose of the previous video mentioned in the script?
-The purpose of the previous video was to create four subnetted networks, but it was later determined that only three networks were needed.
What are the three networks that were eventually used in the script?
-The three networks used are Network 1, Network 2, and Network 3.
What is the default gateway for Network 1 in the script?
-The default gateway for Network 1 is 192.168.1.1.
What IP address is assigned to the PC on Network 1?
-The PC on Network 1 is assigned the IP address 192.168.1.2.
What is the IP address assigned to Router 1 on Network 2?
-Router 1 on Network 2 is assigned the IP address 192.168.1.65.
What is the subnet mask used for each IP address in the script?
-The subnet mask used for each IP address is 255.255.255.192.
Why is the subnet mask 255.255.255.192 used in the script?
-The subnet mask 255.255.255.192 is used because the networks were subnetted into a /26, which requires this subnet mask for proper addressing.
What command is used to enable the interface on a router in the script?
-The command 'no shutdown' is used to enable the interface on a router.
What is the IP address assigned to the PC on Network 3 in the script?
-The PC on Network 3 is assigned the IP address 192.168.1.130.
Why was the ping from PC to PC2 unsuccessful in the script?
-The ping was unsuccessful because the router did not have a route configured for the network that PC2 was on, as it was not connected to the router's interface.
What will be configured in the next tutorial according to the script?
-In the next tutorial, static routes or default routes will be configured to resolve the connectivity issues.

Outlines

00:00

🌐 Network Configuration and IP Address Assignment

The script begins with a tutorial on configuring IP addresses for a network that has been previously subnetted into four networks, but only three are needed. The focus is on assigning IP addresses to Network 1, Network 2, and Network 3, with specific default gateways for each. The subnet mask used is 255.255.255.192, indicating a /26 subnetting scheme. The video demonstrates configuring the IP address on a PC, setting the default gateway on routers, and configuring interface IP addresses on routers with commands entered in the command line interface (CLI). The process includes setting the clock rate for a DC port and ensuring interfaces are active with the 'no shutdown' command. The script ends with the configuration being saved and a brief mention of a future tutorial on static routes or default routes.

05:02

🔍 IP Configuration Continuation and Connectivity Testing

This paragraph continues the network configuration process, detailing the IP address settings for additional interfaces on routers and PCs. The script covers the assignment of IP addresses to a router's serial interface and a PC's network interface, with an emphasis on the correct subnet mask and default gateway for each device. After configuring the devices, the script moves on to testing connectivity between two PCs using the ping command. The test reveals that the ping is unsuccessful due to a lack of routing information between certain networks, as the routers do not have interfaces connected to all subnets. The paragraph concludes with a teaser for an upcoming tutorial that will address the configuration of static routes or default routes to resolve the connectivity issue.

Mindmap

Keywords

💡Subnetting

Subnetting is the process of dividing a network into smaller networks, which is essential for efficient IP address allocation and traffic management. In the video, subnetting is used to create three distinct networks from a larger network, each with its own IP address range, as shown by the script's reference to 'subnetted networks' and the application of IP addresses with a subnet mask of 255.255.255.192.

💡IP Address

An IP address is a unique identifier for devices on a network, allowing them to communicate with each other. The video script mentions assigning specific IP addresses to various devices such as routers and PCs, for example, '1.2' for a PC and '1.65' for a router, which are crucial for setting up network connectivity.

💡Default Gateway

A default gateway is the IP address of the router on a network that devices use to send data to other networks. The script refers to setting the default gateway for PCs, such as 'do1 1.1' and '1.1928.1.129', which is necessary for routing traffic outside of the local network.

💡Router

A router is a networking device that forwards data packets between computer networks. The video discusses configuring routers with specific IP addresses and default gateways, like 'router one' getting the IP address '1.65', which is fundamental for establishing network routes and connectivity.

💡Subnet Mask

A subnet mask is used to separate the network address from the host address within the IP address structure. The script specifies a subnet mask of '255.255.255.192' for the IP addresses, which defines the size of the subnet and the number of available host addresses.

💡Interface

In networking, an interface refers to a communication endpoint, such as a physical port on a router. The script describes configuring interfaces on routers, like 'interface zal, 010' and 'gigabit 0/0', which are essential for assigning IP addresses and enabling communication.

💡Clock Rate

The clock rate is the speed at which data is transmitted over a serial interface, typically measured in bits per second. The script mentions setting the clock rate to '128,000' for a DC (Data Communications) port, which is important for synchronous communication.

💡DTE and DCE

DTE stands for Data Terminal Equipment, and DCE stands for Data Communications Equipment. In the context of the script, a DC port on a router requires a clock rate, while a DTE port does not, indicating the direction of the clock signal in a point-to-point connection.

💡No Shutdown

The 'no shutdown' command in networking is used to activate an interface that has been administratively shut down. The script includes this command to turn on interfaces like 'interface serial 010' and 'gigabit 0/0', enabling them to pass traffic.

💡Ping

Ping is a network administration tool used to test the connectivity between two networked devices by sending Internet Control Message Protocol (ICMP) echo request packets. The script describes an unsuccessful ping attempt, indicating a network connectivity issue due to missing routes.

💡Static Route

A static route is a network route that is manually configured and does not change unless altered by a network administrator. The script hints at configuring static routes in a future tutorial to resolve the 'destination host unreachable' issue encountered during the ping test.

Highlights

Introduction to the process of applying IP addresses to a network with subnetted segments.

Explanation of the requirement for three networks instead of four.

Assignment of IP address 1.2 to the PC on network one with a default gateway of 1.1.

IP address 1.65 assigned to router one on network two with 1.66 for router two.

Network three's router is given the IP address 1.129 with 1.130 for PC2.

Use of subnet mask 255.255.255.192 for all IP addresses due to a /26 subnet.

Demonstration of configuring IP settings on a PC with IP address, subnet mask, and default gateway.

Accessing the command line interface of a router and entering privilege mode.

Configuration of interface zal 010 with a clock rate and IP address on router one.

Assigning IP address 192.168.1.1 to gigabit 0/0 as the default gateway for the PC.

Saving the router configuration and proceeding to configure router two.

Setting up interface serial 010 on router two with IP address 1.66 without a clock rate.

Configuring gigabit 0/0 on router two with IP address 1.129 for network three.

PC2's IP configuration with address 1.130 and default gateway 1.192.168.1.129.

Testing connectivity with a ping command and the discovery of a network reachability issue.

Explanation of the network reachability issue due to the lack of routing configuration.

Announcement of the next tutorial focusing on static routes or default route configuration.