Internet Control Message Protocol
description: core protocol of the Internet Protocol suite, mainly used on IPv4 networks to indicate error messages in network operations
constraint: Version == 2
field: Type
name: Unused
background: linen
caption: A general header for ICMPv4
constraint: Type == 3
description: протокол стека TCP/IP @ru
description: protocole de communication en réseau informatique @fr
constraint: Unused == 0
text: A value of indicates 'Destination unreachable'.
description: protocollo di servizio per reti a pacchetto @it
name: Reserved
bits: 16
hypernym: Protocols
name: Version
bits: 4
label: بروتوكول رسائل التحكم في الإنترنت @ar
date: 2015-01-10
label: ICMP @eu
bits: 8
subject: Category:Network layer protocols
bits: 12
description: Ağ işlemlerinde hata mesajları için kullanılan internet protokolü @tr
field: Code
subject: Category:Internet Standards
description: protocolo de mensajes de control de Internet @es
title: Internet Control Message Protocol
label: 互联网控制消息协议 @zh
subject: Category:Internet protocols
field: Reserved
description: פרוטוקול תקשורת @iw
constraint: Reserved == 0
field: Unused
description: protocol din suita TCP/IP care folosește la semnalizarea și diagnosticarea problemelor din rețea @ro
field: C-Type
description: protokoll som typiskt används för felmeddelanden, routingkontroll och diagnostik @sv
type: Thing
name: Type
field: Length
label: 인터넷 제어 메시지 프로토콜 @ko
description: بروتوكول مساعد للإصدار الرابع من بروتوكول الإنترنت وجزء مدمج منه، يُستعمل للإبلاع عن الأخطاء في الشبكة وللاستعلام عن المعلومات فيها. @ar
description: 互联网协议族的核心协议之一。主要用于IPv4网络，以指示网络操作中的错误消息 @zh
field: Checksum
purpose: Auxiliary protocol for IPv4
text: Extension header version.
url: https://web.archive.org/web/20150110205151/http:/support.microsoft.com/kb/195686
osilayer: Network layer
length: 4
length: 12
field: Class-Num
length: 8
developer: DARPA
title: Explanation of ICMP Redirect Behavior
description: interneten használt protokoll @hu
label: Protocolo de control de mensajes de Internet @es
subject: Category:Internet layer protocols
text: Unused, must be set to zero. If Length or Next-hop MTU are not used, they are considered part of this field.
text: Reserved.
field: Version
description: Kommunikationsprotokoll für den Austausch von Informations- und Fehlermeldungen @de