The ICMP type is 8, and the code number is 0.
What are the ICMP typeĪnd code numbers? What other fields does this ICMP packet have? How manyīytes are the checksum, sequence number and identifier fields? Examine one of the ping request packets sent by your host. Network software itself interprets all ICMP messages, no port numbers are needed toĭirect the ICMP message to an application layer process.ģ. The Type/Code combination identifies the specific message being received. Each ICMP packet has a "Type" and a "Code". The ICMP packet does not have source and destination port numbers because it wasĭesigned to communicate network-layer information between hosts and routers, notīetween application layer processes. Why is it that an ICMP packet does not have source and destination port numbers?
The IP address of the destination host isĢ. What is the IP address of your host? What is the IP address of the destination host?
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