IP fragmentation definition of IP fragmentation in the Free Online Encyclopedia.

IP fragmentation

Breaking an IP datagram (packet) into pieces in order to be sent across a transmission link with a frame size smaller than the datagram. Performed in a router, the header of the original IP packet is replicated with minor changes to each of the fragments. If one of the fragments is dropped, the original datagram must be fragmented again and retransmitted.

IP Fragmentation Is Often Avoided
IP fragments are problematic. Some firewalls and content switches may not allow them, and they add overhead to routers, which are designed for high-speed packet forwarding, not fragment creation and reassembly. To avoid IP fragmentation, Maximum Segment Size (MSS) messages are sent between two end points to find the maximum frame size that can be transmitted intact.

In a network with multiple data links, the router uses Path Maximum Transmission Unit Discovery (PMTUD) to send error messages back to the sender whenever a link with a smaller frame size is encountered. The host then reduces its TCP packet size and retransmits. PMTUD does not work with UDP, only TCP.

Mentioned in	?		References in periodicals archive	?		Encyclopedia browser	?		Full browser	?
No references found	Hence, it must be split into two packets, known as IP fragmentation. ENCRYPTION ISSUES: MOVING TOWARD HIGHER PERFORMANCE NETWORK SECURITY ... by Muegge, Mark / Computer Technology Review Attackers using commonly known techniques such as IP fragmentation can evade many network-based intrusion detection systems. Intrusion.com Acquires MimeStar, Inc.; Company Adds Network Intrusion ... by Business Wire The EIFO+ is distinguished from other switches in its class by three unique features: the new FIREchip, the first ASIC-based IP fragmentation engine implemented on a switch port basis; NPI's proven Distributed Switching Architecture, which delivers consistent wire-speed performance on each of the EIFO+'s 12 ports; and industry-first distributed virtual LAN (VLAN) creation and mirroring capabilities to define and effectively manage VLANs over an FDDI network. New EIFO+ LAN Switch from Network Peripherals Uses New FIREchip ASIC ... by Business Wire	IOW Iowa Iowa City Iowa County Iowa State Fair Iowa State Parks Iowa State University of Science and Technology Iowa, University of Iowan glaciation ioxynil ioxynil octanoate IP IP address IP address lookup utilities IP address reservation IP based IP block IP call IP card IP CENTREX IP communications IP control IP convergence IP core IP filter IP fragmentation IP gateway IP layer IP multicast IP Multimedia Subsystem IP network IP next generation IP number IP on Everything IP PBX IP phone IP protocol IP protocol number IP router IP SAN IP services switch IP space IP spoofing IP storage IP Switch IP switching IP telephony IP telephony signaling protocol IP tunneling IP&E IP/Ethernet	IP Analysis Tools IP Australia IP autoconfiguration addressing IP based IP based network IP BCP IP Bearer Control Protocol IP block IP call IP cam IP camera IP card IP CENTREX IP Charging Gateway IP classes IP classes IP classes IP communications IP Communications T1 IP control Ip Convergence IP core IP Datacast IP Datacast IP Enabled Communications Systems IP fax IP Filter IP fragmentation IP gateway IP law IP law IP law IP law IP layer IP management IP mapping IP mapping IP mapping IP Masquerade IP masquerading IP Media IP Multicast IP multicast address Ip multicasting IP Multimedia Public Identity IP Multimedia Subsystem IP Multimedia Subsystems IP name IP name IP name IP network IP Network Management IP Network Management System IP Next Generation IP Next Generation IP Next Generation Network IP NGN IP number

Mentioned in

References in periodicals archive

Encyclopedia browser

Full browser

No references found

Hence, it must be split into two packets, known as IP fragmentation.

ENCRYPTION ISSUES: MOVING TOWARD HIGHER PERFORMANCE NETWORK SECURITY ... by Muegge, Mark / Computer Technology Review

Attackers using commonly known techniques such as IP fragmentation can evade many network-based intrusion detection systems.

Intrusion.com Acquires MimeStar, Inc.; Company Adds Network Intrusion ... by Business Wire

The EIFO+ is distinguished from other switches in its class by three unique features: the new FIREchip, the first ASIC-based IP fragmentation engine implemented on a switch port basis; NPI's proven Distributed Switching Architecture, which delivers consistent wire-speed performance on each of the EIFO+'s 12 ports; and industry-first distributed virtual LAN (VLAN) creation and mirroring capabilities to define and effectively manage VLANs over an FDDI network.

New EIFO+ LAN Switch from Network Peripherals Uses New FIREchip ASIC ... by Business Wire