Data Communication: ICMP and Ping, ICMP and Traceroute, Captured Trace, Fragmentation

Running head: DATA COMMUNICATION
Data Communication
Name of the Student:
Name of the University:
Author Note

1
DATA COMMUNICATION
ICMP and Ping
1. What is the IP address of your host? What is the IP address of the
destination host?
The IP address of the host is 10.10.30.49. The IP address of the destination host is
143.89.44.246.

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DATA COMMUNICATION
2. Why is it that an ICMP packet does not have source and destination port
numbers?
The ICMP is designed for communicating with the network-layer information in
between the routers and the host and not within the application layer processes. Hence, the
ICMP packet does not have source and destination port numbers.
3. Examine one of the ping request packets sent by your host. What are the
ICMP type and code numbers? What other fields does this ICMP packet have?
How many bytes are the checksum, sequence number and identifier fields?
The ICMP type is 8 and the code number is 0. The other fields that the ICMP packet
have are checksum, identifier (BE), identifier (LE), sequence number (BE) and sequence
number (LE). The checksum, sequence number and identifier fields are of 2 bytes.

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DATA COMMUNICATION
4. Examine the corresponding ping reply packet. What are the ICMP type and
code numbers? What other fields does this ICMP packet have? How many bytes
are the checksum, sequence number and identifier fields?
The ICMP type is 0 and the code number is 0. The other fields that the ICMP packet
have are checksum, identifier (BE), identifier (LE), sequence number (BE) and sequence
number (LE). The checksum, sequence number and identifier fields are of 2 bytes.