CCNA Exploration _part5 potx

HQ LAN1 Subnet Network Address Decimal Subnet Mask CIDR Subnet Mask First Usable IP Address Last Usable IP Address Broadcast Address 3.. HQ LAN2 Subnet Network Address Decimal Subnet M

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CCNA Exploration

Routing Protocols and Concepts: RIP version 1 Lab 5.6.3: RIP Troubleshooting

• Discover where convergence is not complete

• Gather information about the non-converged portion of the network along with any other errors

• Analyze information to determine why convergence is not complete

• Propose solutions to network errors

• Implement solutions to network errors

• Document the corrected network

Scenario

In this lab, you will begin by loading configuration scripts on each of the routers These scripts contain errors that will prevent end-to-end communication across the network You will need to troubleshoot each router to determine the configuration errors and then use the appropriate commands to correct the

configurations When you have corrected all of the configuration errors, all of the hosts on the network should be able to communicate with each other

The network should also have the following requirements met:

• RIPv1 routing is configured on the BRANCH router

• RIPv1 routing is configured on the HQ router

• RIP updates must be disabled on the BRANCH and HQ LAN interfaces

• Static default route is configured on the HQ router and shared with the BRANCH router via RIP updates

• Static routes for all HQ and BRANCH networks are to be configured on the ISP router The routes must be summarized wherever possible

Task 1: Cable, Erase, and Reload the Routers

Step 1: Cable a network

Cable a network that is similar to the one in the Topology Diagram

Step 2: Clear the configuration on each router

Clear the configuration on each of routers using the erase startup-config command and then reload the routers Answer no if asked to save changes

Task 2: Load Routers with the Supplied Scripts

Step 1: Load the following script onto the BRANCH router

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Task 3: Troubleshoot the BRANCH Router

Step 1: Begin troubleshooting at the Host connected to the BRANCH router

From the host PC1, is it possible to ping PC2? _

From the host PC1, is it possible to ping the default gateway? _

Step 2: Examine the BRANCH router to find possible configuration errors

Begin by viewing the summary of status information for each interface on the router

Are there any problems with the status of the interfaces?

_ _

If there are any problems with the status of the interfaces, record any commands that will be necessary to correct the configuration errors

_ _ _

Step 3: If you have recorded any commands above, apply them to the router configuration now Step 4: View summary of the status information

If any changes were made to the configuration in the previous step, view the summary of the status information for the router interfaces again

Does the information in the interface status summary indicate any configuration errors? _

If the answer is yes, troubleshoot the interface status of the interfaces again

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CCNA Exploration

Step 5: Troubleshoot the routing configuration on the BRANCH router

What networks are shown in the routing table?

_ _ _

Are there any problems with the routing table?

_ _ _

If there are any problems with the routing table, record any commands that will be necessary to correct the configuration errors

_ _

What networks are included in the RIP updates?

_ _

Are there any problems with the RIP updates that are being sent out from the router?

_ _ _

If there are any problems with the RIP configuration, record any commands that will be necessary to correct the configuration errors

_ _ _

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CCNA Exploration

Step 6: If you have recorded any commands above, apply them to the router configuration now Step 7: View the routing information

If any changes were made to the configuration in the previous steps, view the routing information again Does the information in routing table indicate any configuration errors?

Does the information included in the RIP updates that are sent out indicate any configuration errors? _

If the answer to either of these questions is yes, troubleshoot the routing configuration again

_ _ _

Step 8: Attempt to ping between the hosts again

From the host PC1, is it possible to ping PC2?

From the host PC1, is it possible to ping the Serial 0/0 interface of the HQ router?

Task 4: Troubleshoot the HQ Router

Step 1: Begin troubleshooting at the Host connected to the R2 router

From the host PC2, is it possible to ping the default gateway?

Step 2: Examine the HQ router to find possible configuration errors

_ _ _

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CCNA Exploration

Step 3: If you have recorded any commands above, apply them to the router configuration now Step 4: View the summary of the status information

Does the information in the interface status summary indicate any configuration errors? _

Step 5: Troubleshoot the routing configuration on the BRANCH router

_ _ _

Are there any problems with the routing table?

_ _ _

If there are any problems with the routing table, record any commands that will be necessary to correct the configuration errors

_ _ _

Are there any problems with the RIP updates that are being sent out from the router?

_ _ _

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CCNA Exploration

If there are any problems with the RIP configuration, record any commands that will be necessary to correct the configuration errors

_ _ _ _

Step 6: If you have recorded any commands above, apply them to the router configuration now Step 7: View the routing information

If any changes were made to the configuration in the previous steps, view the routing information again Does the information in routing table indicate any configuration errors?

Does the information included in the RIP updates that are sent out indicate any configuration errors?

If the answer to either of these questions is yes, troubleshoot the routing configuration again

_ _ _

Step 8: Verify that the HQ router is sending a default route to the BRANCH router

Is there a default route in the BRANCH routing table? _

If not, what commands are needed to configure this on the HQ router?

_ _ _

Step 9: If you have recorded any commands above, apply them to the HQ router configuration now

Step 10: View the BRANCH routing table

If any changes were made to the configuration in the previous step, view the BRANCH routing table again

Is there a default route in the BRANCH routing table?

If the answer is no, troubleshoot the RIP configuration again

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CCNA Exploration

From the host PC2, is it possible to ping the Serial 0/1 interface of the ISP router? _

Task 5: Troubleshoot the ISP Router

Step 1: Begin troubleshooting at the Host connected to the ISP router

From the host PC3, is it possible to ping the default gateway? _

Step 2: Examine the ISP router to find possible configuration errors

_ _ _

Step 3: If you have recorded any commands above, apply them to the router configuration now Step 4: View the summary of the status information

Does the information in the interface status summary indicate any configuration errors?

Step 5: Troubleshoot the static routing configuration on the ISP router

Begin by viewing the routing table

_ _ _ _

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CCNA Exploration

Are there any problems with the routing configuration?

_ _

If there are any problems with the routing configuration, record any commands that will be necessary to correct the configuration errors

_ _ _

Step 6: If you have recorded any commands above, apply them to the router configuration now Step 7: View the routing table

If any changes were made to the configuration in the previous step, view the routing table again

Does the information in the routing table indicate any configuration errors? _

If the answer is yes, troubleshoot the routing configuration again

From the host PC3, is it possible to ping the WAN interface of the BRANCH router? _

Task 6: Reflection

There were a number of configuration errors in the scripts that were provided for this lab Use the space below to write a brief description of the errors that you found

_ _ _ _ _ _ _ _

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appropriate cabling and restore the TCP/IP settings

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Activity 6.4.1: Basic VLSM Calculation and Addressing Design

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CCNA Exploration

Routing Protocols and Concepts:

VLSM and CIDR Activity 6.4.1: Basic VLSM Calculation and Addressing Design

Learning Objectives

Upon completion of this activity, you will be able to:

• Determine the number of subnets needed

• Determine the number of hosts needed for each subnet

• Design an appropriate addressing scheme using VLSM

• Assign addresses and subnet mask pairs to device interfaces

• Examine the use of the available network address space

Scenario

In this activity, you have been given the network address 192.168.1.0/24 to subnet and provide the IP addressing for the network shown in the Topology Diagram VLSM will be used so that the addressing requirements can be met using the 192.168.1.0/24 network The network has the following addressing requirements:

• The HQ LAN1 will require 50 host IP addresses

• The HQ LAN2 will require 50 host IP addresses

• The Branch1 LAN1 will require 20 host IP addresses

• The link from HQ to Branch1 will require an IP address for each end of the link

• The link from HQ to Branch2 will require an IP address for each end of the link

• The link Branch1 to Branch2 will require an IP address for each end of the link

(Note: Remember that the interfaces of network devices are also host IP addresses and are included

in the above addressing requirements.)

Task 1: Examine the Network Requirements

Examine the network requirements and answer the questions below Keep in mind that IP addresses will

be needed for each of the LAN interfaces

1 How many subnets are needed? _

2 What is the maximum number of IP addresses that are needed for a single subnet? _

3 How many IP addresses are needed for each of the BranchBranch1 LANs? _

4 How many IP addresses are needed for each of the BranchBranch2 LANs? _

5 How many IP addresses are needed for each of the WAN links between routers? _

6 What is the total number of IP addresses that are needed? _

7 What is the total number of IP addresses that are available in the 192.168.1.0/24 network?

_

8 Can the network addressing requirements be met using the 192.168.1.0/24 network? _

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CCNA Exploration

Task 2: Design an IP Addressing Scheme

Step 1: Determine the subnet information for the largest network segment or segments

In this case, the two HQ LANs are the largest subnets.

1 How many IP addresses are needed for each LAN? _

2 What is the smallest size subnet that can be used to meet this requirement? _

3 What is the maximum number of IP addresses that can be assigned in this size subnet? _

Step 2: Assign subnets to HQ LANs

Start at the beginning of the 192.168.1.0/24 network

1 Assign the first available subnet to HQ LAN1

2 Fill in the chart below with the appropriate information

HQ LAN1 Subnet

Network

Address

Decimal Subnet Mask

CIDR Subnet Mask

First Usable IP Address

Last Usable IP Address

Broadcast Address

3 Assign the next available subnet to HQ LAN2

HQ LAN2 Subnet

Network

Address

Decimal Subnet Mask

CIDR Subnet Mask

Broadcast Address

Step 3: Determine the subnet information for the next largest network segment or segments

In this case, the two Branch1 LANs are the next largest subnets.

30

Step 4: Assign subnet to BRANCH1 LANs

Start with the IP address following the HQ LAN subnets

1 Assign the next subnet to Branch1 LAN1

Branch1 LAN1 Subnet

Network

Address

Decimal Subnet Mask

CIDR Subnet Mask

Broadcast Address

3 Assign the next available subnet to Branch1 LAN2

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CCNA Exploration

Network

Address

Decimal Subnet Mask

CIDR Subnet Mask

Broadcast Address

Step 5: Determine the subnet information for the next largest network segment or segments

In this case, the two Branch2 LANs are the next largest subnets

Step 6: Assign subnets to BRANCH2 LANs

Start with the IP address following the Branch1 LAN subnets

1 Assign the next subnet to the Branch2 LAN1 Fill in the chart below with the appropriate

CIDR Subnet Mask

Broadcast Address

2 Assign the next available subnet to Branch2 LAN2

Network

Address

Decimal Subnet Mask

CIDR Subnet Mask

Broadcast Address

Step 7: Determine the subnet information for the links between the routers

1 How many IP addresses are needed for each link? _

Step 8: Assign subnets to links

Start with the IP address following the Branch2 LAN subnets

1 Assign the next available subnet to the link between the HQ and Branch1 routers

Link between HQ and Branch1 Subnet

Network

Address

Decimal Subnet Mask

CIDR Subnet Mask

Broadcast Address

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CCNA Exploration

3 Assign the next available subnet to the link between the HQ and Branch2 routers

Link between HQ and Branch2 Subnet

Network

Address

Decimal Subnet Mask

CIDR Subnet Mask

Broadcast Address

5 Assign the next available subnet to the link between the Branch1 and Branch2 routers

Link between Branch1 and Branch2 Subnet

Network

Address

Decimal Subnet Mask

CIDR Subnet Mask

Broadcast Address

Task 3: Assign IP Addresses to the Network Devices

Assign the appropriate addresses to the device interfaces Document the addresses to be used in the Addressing Table provided under the Topology Diagram

Step 1: Assign addresses to the HQ router

1 Assign the first valid host address in the HQ LAN 1 subnet to the Fa0/0 LAN interface

2 Assign the first valid host address in the HQ LAN 2 subnet to the Fao/1 LAN interface

3 Assign the first valid host address in the link between HQ and Branch1 subnet to the S0/0/0 interface

4 Assign the first valid host address in the link between HQ and Branch2 subnet to the S0/0/1 interface

Step 2: Assign addresses to the Branch1 router

1 Assign the first valid host address in the Branch1 LAN1 subnet to the Fa0/0 LAN interface

3 Assign the last valid host address on the link between Branch1 and HQ subnet to the S0/0/0 interface

4 Assign the first valid host address on the link between Branch1 and Branch2 subnet to the S0/0/1 interface

Step 3: Assign addresses to the Branch2 router

2 Assign the first valid host address in the Branch 2 LAN 2 subnet to the Fa0/1 LAN interface

3 Assign the last valid host address on the link between HQ and Branch2 subnet to the S0/0/1 interface

4 Assign the last valid host address on the link between Branch1 and Branch2 subnet to the S0/0/0 interface

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