Chunk

What Does Chunk Mean?

Chunk is a control data (C/D) and packet set used in Stream Control Transmission Protocol (SCTP). SCTP packets are comprised of common headers and data chunks and vary by content.

Techopedia Explains Chunk

Chunk content types are defined as follows:

Chunk type: Predetermined eight-bit Internet Engineering Task Force (IETF) value defined by chunk field content
Chunk flags: Eight flag-bit value defined by chunk type with zero default
Chunk length: 16-bit unsigned value with no padding
Chunk value: General purpose value defined by chunk type.

The following are standard RFC 4960 chunk types:

DATA
INIT
INIT ACK
SACK
HEARTBEAT
HEARTBEAT ACK
ABORT
SHUTDOWN
SHUTDOWN ACK
ERROR
COOKIE ECHO
COOKIE ACK
ECNE
CWR
SHUTDOWN COMPLETE

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Margaret Rouse

Technology Specialist

Margaret is an award-winning writer and educator known for her ability to explain complex technical topics to a non-technical business audience. Over the past twenty years, her IT definitions have been published by Que in an encyclopedia of technology terms and cited in articles in the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine, and Discovery Magazine. She joined Techopedia in 2011. Margaret’s idea of a fun day is to help IT and business professionals to learn to speak each other’s highly specialized languages.

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