traceroute example

Detailed analysis of route tracking command traceroute (1) The premise for implementing all commands in this article is that you can access the Internet now. People with a little computer knowledge know the ping command, which is used to check whether their host is connected to the target address, and the packet communication rate between their host and the target address, the so-called communication package is also the TCP/IP and UDP packets. Here w

supports sending TCP and ICMP:-I --icmp use ICMP ECHO for tracerouting-t --tcp with TCP SYN for tracerouting-p port General Linux will default with the Traceroute tool, if not can be installed yum.The simplest basic usage of traceroute is: traceroute hostname, Example:#

, the router discards the packet and generates an ICMP datagram that is inaccessible to the host. After receiving the datagram, the host sends a UDP datagram with TTL = 2 to the target host, and then stimulates the second router to send an ICMP data report to the host. Until the target host is reached. In this way, traceroute obtains all the router ip addresses. This avoids the problem that the ip header can only record limited routing IP addresses.So

The premise of all the commands in this article is: You can surf the internet now.People with a little computer knowledge know that the ping command is used to check whether their host is connected to the destination address, the communication packet communication rate of their host and destination address, the so-called communication packet, which is what TCP/IP,UDP package, here is a bit more popular, for example, Take this it website csdn to test,

By traceroute we can know what path the information from your computer to the other end of the Internet host is walking. Of course, each time a packet arrives at a similar destination (destination) by a similar starting point (source), the path may be different, but basically the route is the same. A Linux system, which we call Tracertoute, is tracert in MS Windows. Traceroute measures how long it takes to

1. traceroute can be used to query routes from one host to another. 2. Principles PingProgramA record routing option is provided, but not all hosts support this option, and the IP header option field can only store up to nine IP addresses. Therefore, it is necessary to develop traceroute.Traceroute uses the TTL fields of the ICMP message and IP header. TTL is an 8-bit field, which is the router's hop counter and also indicates the datagram lifecyc

By traceroute we can know what path the information from your computer to the other end of the Internet host is walking. Of course, each time a packet arrives at a similar destination (destination) by a similar starting point (source), the path may be different, but basically the route is the same.Linux systems, which we call traceroute, are tracert in MS Windows. Trace