Packet Tracer - Configuring IPv4 Route
Summarization - Scenario 1
Please click here to download topology 6.4.1.5 Packet Tracer - Configuring IPv4 Route Summarization - Scenario 1 Instructions
Topology
6.4.1.5 Packet Tracer - Configuring IPv4 Route Summarization - Scenario 1 Instructions |
Addressing Table
Device
|
Interface
|
IPv4 Address
|
Subnet Mask
|
Default Gateway
|
R1
|
G0/0
|
172.31.157.1
|
255.255.255.192
|
N/A
|
S0/0/0
|
172.31.157.97
|
255.255.255.252
|
N/A
|
|
R2
|
G0/0
|
172.31.157.65
|
255.255.255.224
|
N/A
|
S0/0/0
|
172.31.157.98
|
255.255.255.252
|
N/A
|
|
S0/0/1
|
172.22.1.129
|
255.255.255.224
|
N/A
|
|
R3
|
G0/0
|
172.22.1.161
|
255.255.255.224
|
N/A
|
S0/0/1
|
172.22.1.158
|
255.255.255.224
|
N/A
|
|
PC1
|
NIC
|
172.31.157.62
|
255.255.255.192
|
172.31.157.1
|
PC2
|
NIC
|
172.31.157.94
|
255.255.255.224
|
172.31.157.65
|
PC3
|
NIC
|
172.22.1.190
|
255.255.255.224
|
172.22.1.161
|
Objectives
Part 1: Calculate Summary Routes
Part 2: Configure Summary Routes
Part 3: Verify Connectivity
Background
In this activity, you will calculate and configure summary routes. Router
summarization, also known as route aggregation, is the process of advertising a
contiguous set of addresses as a single address.
Part 1:
Calculate Summary Routes
Step 1:
Calculate a summary route on R1
to reach LANs on R3.
a.
List the 172.22.1.128/27 and
172.22.1.160/27 networks in binary format.
172.22.1.128: 10101100.00010110.00000001.10000000
172.22.1.160: 10101100.00010110.00000001.10100000
b.
Count the left-most matching
bits to determine the mask for the summary route. They have 26 left-most bits
in common.
172.22.1.128: 10101100.00010110.00000001.10000000
172.22.1.160: 10101100.00010110.00000001.10100000
c.
Copy the matching bits and fill
in the remaining bits with zeros to determine the summarized network address.
10101100.00010110.00000001.10000000
d.
What is the summarized network
address and subnet mask? ___________________________________
Step 2:
Calculate a summary route on R3
to reach LANs on R1 and R2.
a.
Calculate the summary route for
the 172.31.157.0/26, 172.31.157.64/27, and 172.31.157.96/30 networks. List the
networks in binary format. Then, count the left-most matching bits to determine
the mask for the summary route.
____________________________________________________________________________________
____________________________________________________________________________________
____________________________________________________________________________________
b.
What is the summarized network
address and subnet mask? ___________________________________
Part 2:
Configure Summary Routes
Step 1:
Configure a summary route for
R1.
Configure the recursive summary route
that you calculated in Part 1, Step 1
.
Step 2:
Configure a summary route for
R3.
Configure the directly attached summary
route that you calculated in Part 1, Step 2.
Part 3:
Verify Connectivity
Verify that all PC hosts and routers can
ping other PC hosts and routers in the topology. If not, troubleshoot and
correct the issues.
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