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RFC 4342, "Profile for Datagram Congestion Control Protocol (DCCP) Congestion Control ID 3: TCP-Friendly Rate Control (TFRC)", March 2006

Source of RFC: dccp (tsv)
See Also: RFC 4342w/ inline errata

Errata ID: 610
Status: Verified
Type: Technical
Publication Format(s) : TEXT

Reported By: Sally Floyd
Date Reported: 2007-10-24

Section 6 says:

      2. A Receive Rate option, defined in Section 8.3, specifying the
         rate at which data was received since the last DCCP-Ack was
         sent.

It should say:

      2. A Receive Rate option, defined in Section 8.3, specifying the
         rate at which data was received over the last round-trip time.

Notes:

Section 8.3 of RFC 4342 (DCCP CCID 3) specifies that the Receive
Rate option reports the receive rate since the last feedback packet
was sent. In contrast, Section 6.2 of RFC 3448 (TFRC) specifies
that the feedback packet reports the receive rate over the last
round-trip time. As a result, the receive rate specified by
RFC 4342 differs from that of TFRC for a feedback packet after an
idle period; the receive rate report specified in RFC 4342 reports
the receive rate over the entire idle period. The receive rate
reported by RFC 4342 also differs from that of TFRC for an early
feedback packet reporting a new loss event. This errata updates
RFC 4342 to use the definition of the receive rate as specified in
RFC 3448.

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