網際控制報文協議icmp
ICMP(Internet控制消息協議)簡介 (Introduction to ICMP (Internet Control Message Protocol))
IP (Internet Protocol) is a network layer protocol. The responsibility of delivering data (Logical Addressing) to any network is done by the IP (Internet Protocol). For this purpose, the IP uses transport layer protocols such as TCP and UDP. TCP and IP form the TCP / IP protocol suite.
IP(Internet協議)是網絡層協議。 將數據(邏輯尋址)傳送到任何網絡的責任由IP(互聯網協議)完成。 為此，IP使用傳輸層協議，例如TCP和UDP。 TCP和IP構成TCP / IP協議套件。
Efforts are being made by Internet Protocol to deliver any data from source to destination. But there are some limitations to the internet protocol, which lowers its performance. These are being given below.
Internet協議正在努力將任何數據從源傳送到目的地。 但是，互聯網協議存在一些局限性，從而降低了其性能。 這些在下面給出。
IP(互聯網協議)的局限性 (Limitations of IP (Internet Protocol))
Two significant deficiencies in Internet protocol are being given below. To understand the need for ICMP, it is important to understand these limitations properly.
下面給出Internet協議中的兩個重大缺陷。 要了解對ICMP的需求，正確理解這些限制很重要。
No Error Reporting:
無錯誤報告：
If any packet is discarded by the router due to an error, then there is no mechanism in the internet protocol so that the sender can be reported about this error.
如果路由器由于錯誤而丟棄了任何數據包，則互聯網協議中沒有機制，因此可以向發送方報告此錯誤。
Examples of some common errors are given below.
以下是一些常見錯誤的示例。
Suppose if the router is not getting a router to deliver data to the destination, then in such situation, the router will disconnect the packet.
假設如果路由器沒有讓路由器將數據傳送到目的地，則在這種情況下，路由器將斷開數據包的連接。
Suppose that the lifetime of a packet is done while traveling on the internet and in time the value of the time to live field in the packet is zero, then in this situation, the packet will be discarded.
假設某個數據包的生存期是在Internet上旅行時完成的，并且該數據包中的生存時間字段的時間值為零，那么在這種情況下，該數據包將被丟棄。
Suppose all the packets have not reached the destination till the destination, then in such a situation, the entire data will be discarded.
假設所有數據包直到目的地都沒有到達目的地，那么在這種情況下，整個數據將被丟棄。
No Communication
沒有溝通
There may be times when one device needs to communicate with another device, there is no such mechanism in Internet protocol for such a situation, so that devices can communicate among themselves in which some devices are required to communicate, such a few common situations are being given below.
有時，一個設備需要與另一設備進行通信，Internet協議中沒有針對這種情況的機制，因此設備可以在需要某些設備進行通信的設備之間進行通信，這種情況很常見。如下。
Many times, a host needs to determine whether the destination host is alive before sending data.
很多時候，主機需要在發送數據之前確定目標主機是否處于活動狀態。
Many times you may also need to get information about a host.
很多時候，您可能還需要獲取有關主機的信息。
The Internet Control Message Protocol has been designed to overcome these shortcomings of Internet Protocol. ICMP and IP both work together. ICMP is the support protocol of the IP. There is a message mechanism in the ICMP so that the hosts are notified about error and status.
Internet控制消息協議旨在克服Internet協議的這些缺點。 ICMP和IP都可以一起工作。 ICMP是IP的支持協議。 ICMP中有一個消息機制，以便向主機通知有關錯誤和狀態。
翻譯自: https://www.includehelp.com/computer-networks/icmp-internet-control-message-protocol.aspx
網際控制報文協議icmp
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