ICMP Source Quench

ICMP Source Quench

Source Quench is an Internet Control Message Protocol message which requests that the sender decrease the rate of messages sent to a router or host. This message may be generated if a router or host does not have sufficient buffer space to process the request, or may occur if the router or host buffer is approaching its limit.

00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Type = 4 Code = 0 Header Checksum
Empty
IP Header + First 8 Bytes of Original Datagram's Data
  • Type must be set to 4.
  • Code must be set to 0.
  • The additional data is used by the sender to match the reply with the associated request.

Read more about ICMP Source Quench:  Operation of Source Quench

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