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.
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Data chunks are defined in RFC 4960, which updates RFC 2960 and RFC 3309.
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:
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DATA
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INIT
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INIT ACK
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SACK
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HEARTBEAT
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HEARTBEAT ACK
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ABORT
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SHUTDOWN
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SHUTDOWN ACK
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ERROR
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COOKIE ECHO
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COOKIE ACK
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ECNE
-
CWR
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SHUTDOWN COMPLETE
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