Answer: time exceeded destination unreachable
Technical details. ICMP is part of the Internet protocol suite as defined in RFC 792. ICMP messages are typically used for diagnostic or control purposes or generated in response to errors in IP operations (as specified in RFC 1122). ICMP errors are directed to the source IP address of the originating packet .
Ping operates by sending Internet Control Message Protocol ( ICMP ) echo request packets to the target host and waiting for an ICMP echo reply. The program reports errors packet loss and a statistical summary of the results typically including the minimum maximum the mean round-trip times and standard deviation of the mean.
Under IPv4 a router that receives a network packet larger than the next hop’s MTU has two options: drop the packet if the Don’t Fragment (DF) flag bit is set in the packet s header and send an Internet Control Message Protocol ( ICMP ) message which indicates the condition Fragmentation Needed ( Type 3 Code 4) or fragment the packet and send it over the link with a smaller MTU.
This is a list of the IP protocol numbers found in the field Protocol of the IPv4 header and the field Next Header of the IPv6 header. It is an identifier for the encapsulated protocol and determines the layout of the data that immediately follows the header. Both fields are eight bits wide.
Sun Nov 04 2001 13:30:00 GMT-0500 (Eastern Standard Time) · The Internet Protocol (IP) is the principal communications protocol in the Internet protocol suite for relaying datagrams across network boundaries. Its routing function enables internetworking and essentially establishes the Internet .. IP has the task of delivering packets from the source host to the destination host solely based on the IP addresses in the packet headers.
A network socket is a…