rfc9506v3.txt		rfc9506.txt
	skipping to change at line 1029 ¶		skipping to change at line 1029 ¶
	The value of the Unreported Loss counter is incremented for every		The value of the Unreported Loss counter is incremented for every
	packet that the protocol declares lost, using whatever loss detection		packet that the protocol declares lost, using whatever loss detection
	machinery the protocol employs. If the protocol is able to rescind		machinery the protocol employs. If the protocol is able to rescind
	the loss determination later, a positive Unreported Loss counter may		the loss determination later, a positive Unreported Loss counter may
	be decremented due to the rescission. In general, it should not		be decremented due to the rescission. In general, it should not
	become negative due to the rescission, but it can happen in few		become negative due to the rescission, but it can happen in few
	cases.		cases.
	This loss signaling is similar to loss signaling in [ConEx], except		This loss signaling is similar to loss signaling in [ConEx], except
	that the Loss Event bit is reporting the exact number of lost		that the Loss Event bit is reporting the exact number of lost
	packets, whereas the signal mechanism in in [ConEx] is reporting an		packets, whereas the signal mechanism in [ConEx] is reporting an
	approximate number of lost bytes.		approximate number of lost bytes.
	For protocols, such as TCP [TCP], that allow network devices to		For protocols, such as TCP [TCP], that allow network devices to
	change data segmentation, it is possible that only a part of the		change data segmentation, it is possible that only a part of the
	packet is lost. In these cases, the sender must increment the		packet is lost. In these cases, the sender must increment the
	Unreported Loss counter by the fraction of the packet data lost (so		Unreported Loss counter by the fraction of the packet data lost (so
	the Unreported Loss counter may become negative when a packet with		the Unreported Loss counter may become negative when a packet with
	L=1 is sent after a partial packet has been lost).		L=1 is sent after a partial packet has been lost).
	Observation points can estimate the end-to-end loss, as determined by		Observation points can estimate the end-to-end loss, as determined by
	skipping to change at line 1185 ¶		skipping to change at line 1185 ¶
	them is called "Reflection Block" (Reflection Block).		them is called "Reflection Block" (Reflection Block).
	The M value is then updated every time a completed Q Block in the		The M value is then updated every time a completed Q Block in the
	incoming square signal is received, following this formula:		incoming square signal is received, following this formula:
	M=round(avg(p)).		M=round(avg(p)).
	The parameter avg(p), the average number of packets in a marking		The parameter avg(p), the average number of packets in a marking
	period, is computed based on all the Q Blocks received since the		period, is computed based on all the Q Blocks received since the
	beginning of the current Reflection Block.		beginning of the current Reflection Block.
	The transmission of an Reflection Block is considered complete (and		The transmission of a Reflection Block is considered complete (and
	the signal toggled) when the number of packets transmitted in that		the signal toggled) when the number of packets transmitted in that
	block is at least the latest computed M value.		block is at least the latest computed M value.
	To ensure a proper computation of the M value, endpoints implementing		To ensure a proper computation of the M value, endpoints implementing
	the R bit must identify the boundaries of incoming Q Blocks. The		the R bit must identify the boundaries of incoming Q Blocks. The
	same approach described in Section 3.2.3 should be used.		same approach described in Section 3.2.3 should be used.
	By looking at the R bit, unidirectional observation points have an		By looking at the R bit, unidirectional observation points have an
	indication of loss experienced by the entire unobserved channel plus		indication of loss experienced by the entire unobserved channel plus
	the loss on the path from the sender to them.		the loss on the path from the sender to them.
End of changes. 2 change blocks.
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