To send a message or packet in computer network we must pay attention to which route is taken by the computer network. Not only that, to find out the path through which the packet arrived at the destination, we also have to check the delay and how long it will take to reach the destination.
That we can all know by tracert. Tracert is a command that can show the path that the packet has passed to get to its destination. This is also done by sending ICMP or Internet Control Message Protocol messages from Echo Request to destinations with Time to Live values which continue to increase.
] The path to be displayed is a list of router interfaces or displayed which is the closest to the host. Where there is a path between the host and destination as well.
Tracert is also very useful for solving some problems on a larger scale network. Where some of these paths can lead to the same point and where many of the routers are involved in it. The following will explain the tracert function in CMD.
Tracert function in CMD
If you want to know or want to do Tracert, you can do it in CMD (Command Prompt). There are commands that are specific to doing Tracert on CMD. Not only in CMD, the Tracert command can be performed on several network devices such as modems, routers, servers, wireless APs, Linux and Windows.
Although the tool to do the tracert is found on every network device, but each name and also the parameters of the command differ slightly. Therefore, in this article I will discuss tracert functions and commands that can be performed in CMD (Command Prompt) .
This Tracert has properties such as investigating and can also check the condition of the internet or the network. in good condition or not.
- To do tracert, you must first open CMD on the start menu.
2. After that, type the command in the form: tracert nesabamedia.com as shown below.
With the example of tracert above, we can see how many jumps or hop routers are skipped. by my device to the address nesabamedia.com. You can try tracert on other links such as google.com, google.co.id and facebook.com.
The results of the teacert command above are also displayed in the form of a list of router interfaces that start from the very close side of our computer and are currently running tracert orders arrive at their destination.
The ms unit indicates the length of time delay that has been taken by an ICMP packet to reach its destination. If there is an asterisk, it emphasizes that both the hop and router interfaces that are skipped are very busy.
And finally it will take a little longer than even the normal time limit to be determined so that the packet or message can be skipped already finished. The asterisk symbol can also be interpreted by the path or the link being passed very slowly.
The star symbol in a result of the traceroute command can also indicate that the router has deactivated or blocked an ICMP message that will later be sent or passed through the router interface. The reason or reason for the package being clicked is due to a security reason.
How it Works Traceroute
How it works from Traceroute is to send a package to the destination host using the Tracert Function TTL that has increased by one or starts from one. If the host sends back ICMP TIME_EXCEED .
Then the traceroute will notify the user of the address of an ICMP sender before and also the time lag when sending a packet IP / UDP to with the receipt of a package ICMP TIME_EXCEED .
Then, after that the traceroute will send back to the destination host with a TTL + = 1 or the current TTL is greater than one before
Traceroute will continue to do this as in the above until the receipt ICMP PORT_UNREACHABLE from a destination host or the maximum hop count that has been reached (default is usually 30).  And traceroute will use a UDP protocol to be able to find out how the traceroute has reached the destination host and n will no longer send packages.
The conclusions that can be drawn from carrying out the tracert command are:
- You can find out which paths or routes have been taken to get to their destination.  You can find out in which parts only busy or stuck.
- A busy or stuck network is not only due to poor link or network conditions but can also be due to security reasons.
- You can find out how long it has taken or delay to arrive at the destination.
- The Tracert uses ICMP to determine a path or route. And you need to remember that on a network has a lot of protocols that will be used. And you should not stick to one protocol only. Try to use other protocols to ensure a computer network condition.
Thus the discussion of the article that discusses the tracert function in CMD. Hopefully this article can add to your knowledge and insight in terms of tracert and also computer networks.