RFC Errata
RFC 5760, "RTP Control Protocol (RTCP) Extensions for Single-Source Multicast Sessions with Unicast Feedback", February 2010
Note: This RFC has been updated by RFC 6128
Source of RFC: avt (rai)
Errata ID: 2117
Status: Held for Document Update
Type: Technical
Publication Format(s) : TEXT
Reported By: Alfred Hoenes
Date Reported: 2010-04-05
Held for Document Update by: Robert Sparks
Section B.4, pg.65 says:
The packet fields will contain the values: | Header Distribution Block | Distribution Type: 1 Number of Data Buckets: 40 Multiplicative Factor: 0 Packet Length field: 18 (18 * 4 => 72 bytes) | Minimum Loss Value: 0 | Maximum Loss Value: 39 | Bucket values are the same as the initial data set. | Result | Selecting one of the three methods outlined above might be done by a congestion parameter or by user preference. The overhead associated with processing the packets is likely to differ very little between the techniques. The savings in bandwidth are | apparent, however, using 20, 52, and 72 octets respectively. These values would vary more widely for a larger data set with less correlation between results.
It should say:
The packet fields will contain the values: | RSI report fixed header; | -- Sub-report Block -- | Sub-Report Block Type: 4 (Loss distribution) Number of Data Buckets: 40 Multiplicative Factor: 0 Packet Length field: 18 (18 * 4 => 72 bytes) | Minimum Distribution Value: 0 | Maximum Distribution Value: 39 | Bucket values are the same as the initial data set, represented | in 12 bits each. | Result | Selecting one of the two methods outlined above might be done by a congestion parameter or by user preference. The overhead associated with processing the packets is likely to differ very little between the techniques. The savings in bandwidth are | apparent, however, using 20 and 72 octets respectively. These values would vary more widely for a larger data set with less correlation between results.
Notes:
Rationale: See preceding reort, eid=2115 !
Also, there are only two examples le ft in the published appendix.