Path MTU Discovery (original) (raw)
Path MTU Discovery ist ein Verfahren zum dynamischen Erkennen der Maximum Transmission Unit (MTU) und damit der maximalen Paketgröße für einen bestimmten Pfad im Netzwerk. Im Allgemeinen kann mit dieser Information Overhead vermindert und Fragmentierung von Datenpaketen verhindert werden.
| Property | Value |
|---|---|
| dbo:abstract | Path MTU Discovery ist ein Verfahren zum dynamischen Erkennen der Maximum Transmission Unit (MTU) und damit der maximalen Paketgröße für einen bestimmten Pfad im Netzwerk. Im Allgemeinen kann mit dieser Information Overhead vermindert und Fragmentierung von Datenpaketen verhindert werden. (de) Path MTU discovery (PMTUd) est une technique permettant de déterminer, dans un réseau informatique, la taille du MTU sur le chemin entre deux hôtes IP, afin d'éviter la fragmentation des paquets. Il est défini pour ICMP par le RFC 1191 et pour ICMPv6 par la RFC 8201. La fragmentation IP affecte en effet les performances des routeurs et pose de plus des problèmes de sécurité. (fr) Path MTU Discovery (PMTUD) is a standardized technique in computer networking for determining the maximum transmission unit (MTU) size on the network path between two Internet Protocol (IP) hosts, usually with the goal of avoiding IP fragmentation. PMTUD was originally intended for routers in Internet Protocol Version 4 (IPv4). However, all modern operating systems use it on endpoints. In IPv6, this function has been explicitly delegated to the end points of a communications session.As an extension to the standard path MTU discovery, a technique called Packetization Layer Path MTU Discovery works without support from ICMP. (en) 경로 MTU 탐색은 컴퓨터 과학 용어이다. 송신시스템에서 큰 크기의 IP 패킷을 Don't Fragment 플래그를 설정한 채 생성하여 전송하는 중에, 만약 중계시스템(라우터 등)이 수용하기에 더 큰 패킷이면 이를 거부하게 되며 이를 다시 더 작은 크기로 재전송하게 된다. 이 과정은 ICMP 의 Destination Unreacheable (Fragmentation Required but DF bit is set) 오류가 돌아오지 않을 때까지 반복하게 되며, 최종적으로는 오류 메시지가 더 이상 돌아오지 않는 시점에서 MTU 값을 확정하게 되는 알고리즘을 말한다. (ko) Path MTU Discovery (PMTUD) é uma técnica padronizada em redes de computadores para determinar o tamanho máximo da unidade de transmissão (MTU) no caminho de rede entre dois hosts IP (Internet Protocol), geralmente com o objetivo de evitar a fragmentação de IP. O PMTUD foi originalmente destinado a roteadores no protocolo IP versão 4 (IPv4). Entretanto, todo sistema operacional moderno utiliza endpoints. No IPv6, esta função tem sido bem explicitamente delegada aos endpoints da sessão da comunicação. (pt) |
| dbo:wikiPageExternalLink | https://github.com/torvalds/linux/blob/v3.15/net/ipv4/route.c%23L123 https://github.com/torvalds/linux/blob/v3.15/net/ipv6/route.c%23L3053 |
| dbo:wikiPageID | 6018283 (xsd:integer) |
| dbo:wikiPageLength | 4980 (xsd:nonNegativeInteger) |
| dbo:wikiPageRevisionID | 1117478300 (xsd:integer) |
| dbo:wikiPageWikiLink | dbr:Internet_Control_Message_Protocol dbc:Internet_protocols dbr:Link_layer dbr:Transmission_Control_Protocol dbr:Internet_Control_Message_Protocol_for_IPv6 dbc:Computer_network_analysis dbr:Black_hole_(networking) dbr:Computer_networking dbr:IP_fragmentation dbr:IPv4 dbr:IPv6 dbr:Maximum_segment_size dbr:Maximum_transmission_unit dbr:Ethernet dbr:IPv6_packet dbr:IPv6_header |
| dbp:wikiPageUsesTemplate | dbt:Ref_RFC dbt:Reflist dbt:Short_description |
| dct:subject | dbc:Internet_protocols dbc:Computer_network_analysis |
| gold:hypernym | dbr:Technique |
| rdf:type | dbo:TopicalConcept yago:WikicatComputerNetworks yago:Artifact100021939 yago:ComputerNetwork103085333 yago:Instrumentality103575240 yago:Network103820728 yago:Object100002684 yago:PhysicalEntity100001930 yago:System104377057 yago:Whole100003553 |
| rdfs:comment | Path MTU Discovery ist ein Verfahren zum dynamischen Erkennen der Maximum Transmission Unit (MTU) und damit der maximalen Paketgröße für einen bestimmten Pfad im Netzwerk. Im Allgemeinen kann mit dieser Information Overhead vermindert und Fragmentierung von Datenpaketen verhindert werden. (de) Path MTU discovery (PMTUd) est une technique permettant de déterminer, dans un réseau informatique, la taille du MTU sur le chemin entre deux hôtes IP, afin d'éviter la fragmentation des paquets. Il est défini pour ICMP par le RFC 1191 et pour ICMPv6 par la RFC 8201. La fragmentation IP affecte en effet les performances des routeurs et pose de plus des problèmes de sécurité. (fr) Path MTU Discovery (PMTUD) is a standardized technique in computer networking for determining the maximum transmission unit (MTU) size on the network path between two Internet Protocol (IP) hosts, usually with the goal of avoiding IP fragmentation. PMTUD was originally intended for routers in Internet Protocol Version 4 (IPv4). However, all modern operating systems use it on endpoints. In IPv6, this function has been explicitly delegated to the end points of a communications session.As an extension to the standard path MTU discovery, a technique called Packetization Layer Path MTU Discovery works without support from ICMP. (en) 경로 MTU 탐색은 컴퓨터 과학 용어이다. 송신시스템에서 큰 크기의 IP 패킷을 Don't Fragment 플래그를 설정한 채 생성하여 전송하는 중에, 만약 중계시스템(라우터 등)이 수용하기에 더 큰 패킷이면 이를 거부하게 되며 이를 다시 더 작은 크기로 재전송하게 된다. 이 과정은 ICMP 의 Destination Unreacheable (Fragmentation Required but DF bit is set) 오류가 돌아오지 않을 때까지 반복하게 되며, 최종적으로는 오류 메시지가 더 이상 돌아오지 않는 시점에서 MTU 값을 확정하게 되는 알고리즘을 말한다. (ko) Path MTU Discovery (PMTUD) é uma técnica padronizada em redes de computadores para determinar o tamanho máximo da unidade de transmissão (MTU) no caminho de rede entre dois hosts IP (Internet Protocol), geralmente com o objetivo de evitar a fragmentação de IP. O PMTUD foi originalmente destinado a roteadores no protocolo IP versão 4 (IPv4). Entretanto, todo sistema operacional moderno utiliza endpoints. No IPv6, esta função tem sido bem explicitamente delegada aos endpoints da sessão da comunicação. (pt) |
| rdfs:label | Path MTU Discovery (de) Path MTU discovery (fr) 경로 MTU 탐색 (ko) Path MTU Discovery (en) Path MTU Discovery (pt) |
| owl:sameAs | freebase:Path MTU Discovery yago-res:Path MTU Discovery wikidata:Path MTU Discovery dbpedia-de:Path MTU Discovery dbpedia-fa:Path MTU Discovery dbpedia-fr:Path MTU Discovery dbpedia-ko:Path MTU Discovery dbpedia-pt:Path MTU Discovery https://global.dbpedia.org/id/4KFQG |
| prov:wasDerivedFrom | wikipedia-en:Path_MTU_Discovery?oldid=1117478300&ns=0 |
| foaf:isPrimaryTopicOf | wikipedia-en:Path_MTU_Discovery |
| is dbo:wikiPageRedirects of | dbr:MSS_clamping dbr:Path_MTU_discovery dbr:Path_mtu_discovery dbr:PMTU_blackhole dbr:PMTU dbr:PMTUD dbr:PMTUD_black_hole dbr:PMTUD_blackhole dbr:PMTU_black_hole dbr:Pmtud dbr:Path_MTU |
| is dbo:wikiPageWikiLink of | dbr:Internet_Control_Message_Protocol dbr:Internet_Protocol dbr:MSS_clamping dbr:Network_address_translation dbr:DragonFly_BSD dbr:Path_MTU_discovery dbr:Path_mtu_discovery dbr:TCP_tuning dbr:Recursive_Internetwork_Architecture dbr:IP_fragmentation dbr:IP_fragmentation_attack dbr:IPv4 dbr:IPv6 dbr:Maximum_segment_size dbr:Maximum_transmission_unit dbr:IPv4_Residual_Deployment dbr:IPv6_packet dbr:Point-to-Point_Protocol_over_Ethernet dbr:PMTU_blackhole dbr:PMTU dbr:PMTUD dbr:PMTUD_black_hole dbr:PMTUD_blackhole dbr:PMTU_black_hole dbr:Pmtud dbr:Path_MTU |
| is foaf:primaryTopic of | wikipedia-en:Path_MTU_Discovery |