2018年4月2日 · ICMP（Internet Control Message Protocol）是用于在IP主机和路由器之间传递控制消息的协议，其中包括了多种类型的报文，用于不同的网络通信情况。 超时消息是 ICMP 中的一种差错报文，它的 Type 字段 编号为11。

2024年12月6日 · The Internet Control Message Protocol (ICMP) has many messages that are identified by a "type" field. Many of these ICMP types have a "code" field. Here we list the types again with their assigned code fields. No registrations at this time.

This reference provides information about default ICMP type and Code IDs. Identifying default ICMP types. The following table lists the default ICMP types:

The Internet Control Message Protocol (ICMP) is a supporting protocol [2] in the Internet protocol suite. It is used by network devices, including routers, to send error messages and operational information indicating success or failure when communicating with another IP address.

ICMP uses many types and codes to report on network conditions. This article looks at the active ICMP types, and explains how they are used

2024年11月2日 · This tutorial lists ICMP types and codes for both IP versions IPv4 and IPv6. Learn what ICMP message types and codes are and how they are categorized. The IP protocol has no inbuilt mechanism to notify a source device if …

ICMP messages are sent in several situations: for example, when a. datagram cannot reach its destination, when the gateway does not have. the buffering capacity to forward a datagram, and when the gateway. can direct the host to send traffic on a shorter route. The Internet Protocol is not designed to be absolutely reliable.

2022年8月25日 · Internet控制信息协议（ICMP）是一个工作于网络层的简单的 TCP /IP协议，IP协议也工作于这一层。 IP协议的主要功能是使网络可以发送和连接数据包，而ICMP协议与之相比则功能有限，主要包括： 实际上，ICMP协议通过为IP协议提供控制信息和错误报告来弥补IP协议的不足，ICMP在RFC 792和1700中定义。 体系结构： ICMP信息封装在IP数据包中在网络上进行传输。 ICMP数据包是面向无连接的，不提供传输保证。 ICMP支持广播，但与TCP和UDP不 …

icmp报文的格式可以分为两部分：icmp头部和icmp数据部分。 不同类型的ICMP报文有不同的格式，但所有ICMP报文都包含一个基础的头部结构。 ICMP 消息的头部结构如下：

The ICMP header contains two fields that are used to identify the type of control message being sent. These fields are the Type and Code fields, each having a size of eight bits. Some notable Type and Code values are listed below: Type 0 Code 0 - Echo Reply; Type 3 Code 0 - Destination network unreachable; Type 3 Code 1 - Destination host ...