## 6.4.5 Packet Tracer – Challenge Route Summarization Answers

### Topology

### Addressing Table

Subnet | Network Address |
---|---|

S-WEST LAN1 | 192.168.7.0/27 |

S-WEST LAN2 | 192.168.7.32/27 |

Link from WEST to N-WEST | 192.168.7.64/30 |

Link from WEST to S-WEST | 192.168.7.68/30 |

Link from HQ to WEST | 192.168.7.72/30 |

NW-BR1 LAN1 | 192.168.7.128/27 |

NW-BR1 LAN2 | 192.168.7.160/27 |

NW-BR2 LAN1 | 192.168.7.192/28 |

NW-BR2 LAN2 | 192.168.7.208/28 |

Link from N-WEST to NW-BR1 | 192.168.7.224/30 |

Link from N-WEST to NW-BR2 | 192.168.7.228/30 |

CENTRAL LAN1 | 192.168.6.0/25 |

CENTRAL LAN2 | 192.168.6.128/26 |

Link from HQ to CENTRAL | 192.168.6.192/30 |

N-EAST LAN1 | 192.168.5.0/27 |

N-EAST LAN2 | 192.168.5.32/27 |

Link from EAST to N-EAST | 192.168.5.192/30 |

Link from EAST to S-EAST | 192.168.5.196/30 |

Link from HQ to EAST | 192.168.5.200/30 |

SE-BR1 LAN1 | 192.168.4.0/26 |

SE-BR1 LAN2 | 192.168.4.64/26 |

SE-BR2 LAN1 | 192.168.4.128/27 |

SE-BR2 LAN2 | 192.168.4.160/27 |

SE-ST1 LAN1 | 192.168.4.192/29 |

SE-ST1 LAN2 | 192.168.4.200/29 |

SE-ST2 LAN1 | 192.168.4.208/29 |

SE-ST2 LAN2 | 192.168.4.216/29 |

Link from SE-BR2 to SE-ST1 | 192.168.4.224/30 |

Link from SE-BR2 to SE-ST2 | 192.168.4.228/30 |

Link from S-EAST to SE-BR2 | 192.168.4.232/30 |

Link from S-EAST to SE-BR1 | 192.168.4.236/30 |

### Learning Objectives:

- Determine summarized routes that can be used to reduce the size of routing tables.

### Scenario:

In this activity, you have been given the network shown in the topology diagram. The subnetting and address assignments have already been completed for the network segments. You need to determine the summarized routes that can be used to reduce the number of entries in routing tables.

### Task 1: Determine the route summary for the S-WEST LANs.

#### Step 1: List the LAN1 and LAN2 of S-WEST in binary format.

LAN1 _ 11000000.10101000.00000111.00000000

LAN2 _ 11000000.10101000.00000111.00100000

#### Step 2: Count the number of leftmost matching bits to determine the mask for the summary path.

1. How many leftmost matching bits are present in the two networks? __ 26

2. What is the subnet mask for the summary route in decimal format?

_255.255.255.192

#### Step 3: Copy the matching bits and then add all zeros to determine the summary network address.

1. What is the summary path in binary form?

_11000000.10101000.00000111.00000000

2. What is the network address for the summary route in decimal format?

_192.168.7.0

### Task 2: Determine the route summary for NO-BR1 LANs.

#### Step 1: List the LAN1 and LAN2 of NO-BR1 in binary format.

LAN1 ___ 11000000.10101000.00000111.10000000

LAN2 ___ 11000000.10101000.00000111.10100000

#### Step 2: Count the number of leftmost matching bits to determine the mask for the summary path.

1. How many leftmost matching bits are present in networks?

__ 26

2. What is the subnet mask for the summary route in decimal format?

__ 255.255.255.192

#### Step 3: Copy the matching bits and then add all zeros to determine the summary network address.

1. What is the summary path in binary form?

__11000000.10101000.00000111.10000000

2. What is the network address for the summary route in decimal format?

___192.168.7.128

### Task 3: Determine the route summary for NO-BR2 LANs.

#### Step 1: List the LAN1 and LAN2 of NO-BR2 in binary format.

LAN1 __ 11000000.10101000.00000111.11000000

LAN2 __ 11000000.10101000.00000111.11010000

#### Step 2: Count the number of leftmost matching bits to determine the mask for the summary path.

1. How many leftmost matching bits are present in networks?

___ 27

2. What is the subnet mask for the summary route in decimal format?

____ 255.255.255.224

#### Step 3: Copy the matching bits and then add all zeros to determine the summary network address.

1. What is the summary path in binary form?

___11000000.10101000.00000111.11000000

2. What is the network address for the summary route in decimal format?

___ 192.168.7.192

### Task 4: Determine the summary route for the Northwest portion of the network.

Use the networks listed below to determine a summary route for the Northwest portion of the network.

#### Step 1: List the segments of the Northwest network in binary format.

Summary of NO-BR1 __

11000000.10101000.00000111.10000000

Summary of NO-BR2 __

11000000.10101000.00000111.11000000

Link from N-WEST to NO-BR1 ___

11000000.10101000.00000111.11100000

Link from N-WEST to NO-BR2__

11000000.10101000.00000111.11100100

#### Step 2: Count the number of leftmost matching bits to determine the mask for the summary path.

1. How many leftmost matching bits are present in networks?

__ 25

2. What is the subnet mask for the summary route in decimal format?

___ 255.255.255.128

#### Step 3: Copy the matching bits and then add all zeros to determine the summary network address.

1. What is the summary path in binary form?

__11000000.10101000.00000111.10000000

2. What is the network address for the summary route in decimal format?

___ 192.168.7.128

### Task 5: Determine the summary route for the Western portion of the network.

Use the networks listed below to determine a summary route for the Western portion of the network.

#### Step 1: List the West network segments in binary format.

Summary of S-WEST __11000000.10101000.00000111.00000000

N-WEST Summary __11000000.10101000.00000111.10000000

Link from WEST to N-WEST __11000000.10101000.00000111.01000000

Link from WEST to S-WEST __11000000.10101000.00000111.01000100

Link from HQ to WEST __11000000.10101000.00000111.01001000

#### Step 2: Count the number of leftmost matching bits to determine the mask for the summary path.

1. How many leftmost matching bits are present in networks?

__ 24

2. What is the subnet mask for the summary route in decimal format?

___ 255.255.255.0

#### Step 3: Copy the matching bits and then add all zeros to determine the summary network address.

1. What is the summary path in binary form?

___11000000.10101000.00000111.00000000

2. What is the network address for the summary route in decimal format?

___ 192.168.7.0

### Task 6: Determine the summary route for the Central portion of the network.

Use the networks listed below to determine a summary route for the Central portion of the network.

#### Step 1: List the Core network segments in binary format.

CENTRAL LAN1 __11000000.10101000.00000110.00000000

CENTRAL LAN2 __11000000.10101000.00000110.10000000

Link from HQ to CENTRAL __11000000.10101000.00000110.11000000

#### Step 2: Count the number of leftmost matching bits to determine the mask for the summary path.

1. How many leftmost matching bits are present in networks?

__ 24

2. What is the subnet mask for the summary route in decimal format?

___ 255.255.255.0

#### Step 3: Copy the matching bits and then add all zeros to determine the summary network address.

1. What is the summary path in binary form?

__11000000.10101000.00000110.00000000

2. What is the network address for the summary route in decimal format?

__192.168.6.0

### Task 7: Determine the route summary for the N-EAST LANs.

#### Step 1: List the LAN1 and LAN2 of N-EAST in binary format.

LAN1 __11000000.10101000.00000101.00000000

LAN2 __11000000.10101000.00000101.00100000

#### Step 2: Count the number of leftmost matching bits to determine the mask for the summary path.

1. How many leftmost matching bits are present in networks?

__26

2. What is the subnet mask for the summary route in decimal format?

__255.255.255.192

#### Step 3: Copy the matching bits and then add all zeros to determine the summary network address.

1. What is the summary path in binary form?

__11000000.10101000.00000101.00000000

2. What is the network address for the summary route in decimal format?

__192.168.5.0

### Task 8: Determine the route summary for the SE-BR1 LANs.

#### Step 1: List the LAN1 and LAN2 of SE-BR1 in binary format.

LAN1 __11000000.10101000.00000100.00000000

LAN2 __11000000.10101000.00000100.01000000

#### Step 2: Count the number of leftmost matching bits to determine the mask for the summary path.

1. How many leftmost matching bits are present in networks?

__25

2. What is the subnet mask for the summary route in decimal format?

__255.255.255.128

#### Step 3: Copy the matching bits and then add all zeros to determine the summary network address.

1. What is the summary path in binary form?

__11000000.10101000.00000100.00000000

2. What is the network address for the summary route in decimal format?

__192.168.4.0

### Task 9: Determine the route summary for the SE-BR2 LANs.

#### Step 1: List the LAN1 and LAN2 of SE-BR2 in binary format.

LAN1 __ 11000000.10101000.00000100.10000000

LAN2 __ 11000000.10101000.00000100.10100000

#### Step 2: Count the number of leftmost matching bits to determine the mask for the summary path.

1. How many leftmost matching bits are present in networks?

__ 26

2. What is the subnet mask for the summary route in decimal format?

__ 255.255.255.192

#### Step 3: Copy the matching bits and then add all zeros to determine the summary network address.

1. What is the summary path in binary form?

___11000000.10101000.00000100.10000000

2. What is the network address for the summary route in decimal format?

___192.168.4.128

### Task 10: Determine the route summary for the SE-ST1 LANs.

#### Step 1: List the LAN1 and LAN2 of SE-ST1 in binary format.

LAN1 __ 11000000.10101000.00000100.11000000

LAN2 __ 11000000.10101000.00000100.11001000

#### Step 2: Count the number of leftmost matching bits to determine the mask for the summary path.

1. How many leftmost matching bits are present in networks? __28

2. What is the subnet mask for the summary route in decimal format?

__255.255.255.240

#### Step 3: Copy the matching bits and then add all zeros to determine the address

summary network.

1. What is the summary path in binary form?

__11000000.10101000.00000100.11000000

2. What is the network address for the summary route in decimal format?

__192.168.4.192

### Task 11: Determine the route summary for the SE-ST2 LANs.

#### Step 1: List the LAN1 and LAN2 of SE-ST2 in binary format.

LAN1 __ 11000000.10101000.00000100.11010000

LAN2 __ 11000000.10101000.00000100.11011000

#### Step 2: Count the number of leftmost matching bits to determine the mask for the summary path.

1. How many leftmost matching bits are present in networks?

__28

2. What is the subnet mask for the summary route in decimal format?

__255.255.255.240

#### Step 3: Copy the matching bits and then add all zeros to determine the summary network address.

1. What is the summary path in binary form?

__11000000.10101000.00000100.11010000

2. What is the network address for the summary route in decimal format?__192.168.4.208

### Task 12: Determine the summary route for the Southeast portion of the network.

Use the networks listed below to determine a summary route for the Southeast portion of the network.

#### Step 1: List the Southeast network segments in binary format.

SE-BR1 Summary __11000000.10101000.00000100.00000000

SE-BR2 Overview __11000000.10101000.00000100.10000000

SE-ST1 Summary __11000000.10101000.00000100.11000000

SE-ST2 Summary __11000000.10101000.00000100.11010000

Link from SE-BR2 to Satellite1 __11000000.10101000.00000100.11100000

Link from SE-BR2 to Satélite2 __11000000.10101000.00000100.11100100

Link from S-ESTE to SE-BR1 __11000000.10101000.00000100.11101100

Link from S-ESTE to SE-BR2 __11000000.10101000.00000100.11101000

#### Step 2: Count the number of leftmost matching bits to determine the mask for the summary path.

1. How many leftmost matching bits are present in networks?

__24

2. What is the subnet mask for the summary route in decimal format?

__255.255.255.0

#### Step 3: Copy the matching bits and then add all zeros to determine the summary network address.

1. What is the summary path in binary form?

__11000000.10101000.00000100.00000000

2. What is the network address for the summary route in decimal format?

__192.168.4.0

### Task 13: Determine the summary route for the Eastern portion of the network.

Use the networks listed below to determine a summary route for the Eastern portion of the network.

#### Step 1: List the segments of the East network in binary format.

Summary of S-ESTE __11000000.10101000.00000100.00000000

Summary of N-ESTE __11000000.10101000.00000101.00000000

Link from EAST to N-EAST __11000000.10101000.00000101.11000000

Link from EAST to S-EAST __11000000.10101000.00000101.11000100

Link from HQ to THIS __11000000.10101000.00000101.11001000

#### Step 2: Count the number of leftmost matching bits to determine the mask for the summary path.

1. How many leftmost matching bits are present in networks? __23

2. What is the subnet mask for the summary route in decimal format?

__255.255.254.0

#### Step 3: Copy the matching bits and then add all zeros to determine the summary network address.

1. What is the summary path in binary form?

__11000000.10101000.00000100.00000000

2. What is the network address for the summary route in decimal format?

__192.168.4.0

### Task 14: Determine the route summary for the entire network.

Use the networks listed below to determine a summary route for the entire network.

#### Step 1: List the East, West and Central summary routes in binary format.

Summary of THIS __11000000.10101000.00000100.00000000

Summary of WEST __11000000.10101000.00000111.00000000

CENTRAL Summary __11000000.10101000.00000110.00000000

#### Step 2: Count the number of leftmost matching bits to determine the mask for the summary path.

1. How many leftmost matching bits are present in networks? __22

2. What is the subnet mask for the summary route in decimal format? __255.255.252.0

#### Step 3: Copy the matching bits and then add all zeros to determine the summary network address.

1. What is the summary path in binary form?

__11000000.10101000.00000100.00000000

2. What is the network address for the summary route in decimal format?

__ 192.168.4.0