Technical Summary
This memo defines metrics to evaluate if a network has maintained
packet order on a packet-by-packet basis. It provides motivations
for the new metrics and discusses the measurement issues, including
the context information required for all metrics. The memo first
defines a reordered singleton, and then uses it as the basis for
sample metrics to quantify the extent of reordering in several
useful dimensions for network characterization or receiver design.
Additional metrics quantify the frequency of reordering and the
distance between separate occurrences. It then defines a metric
oriented toward assessing reordering effects on TCP.
Working Group Summary
The concepts behind the draft have been discussed since 2001,
resulting in a number of individual submission drafts which were
merged into this draft. This draft has been discussed for several
years, it has been stable for about a year now. Reviews were done
by a number of key people in the group.
Protocol Quality
PROTO shepherd: Henk Uijterwaal (henk.uijterwaal@ripe.net)
Lars Eggert reviewed this spec for the IESG.
The main comment during IETF LC was a completely revised IANA
considerations section. Version -13 has addressed the concerns raised
during the IESG review.
Note to RFC Editor
Need to replace "RFC xxxx" with the number this RFC receives upon publication.
Section 2, first paragraph: replace reference to RFC2640 to RFC2460
OLD:
Ordered arrival is a property found in packets that transit their
path, where the packet sequence number increases with each new
arrival and there are no backward steps. The Internet Protocol
[RFC791] [RFC2640] has no mechanisms to assure either packet
NEW:
Ordered arrival is a property found in packets that transit their
path, where the packet sequence number increases with each new
arrival and there are no backward steps. The Internet Protocol
[RFC791] [RFC2460] has no mechanisms to assure either packet
^^^^^^^