One document matched: draft-stewart-tsvwg-sctpscore-00.txt
Network Working Group R. Stewart
Internet-Draft Cisco Systems, Inc.
Expires: November 15, 2002 M. Tuexen
Siemens AG
May 17, 2002
Stream Control Transmission Protocol (SCTP) Bakeoff Scoring
draft-stewart-tsvwg-sctpscore-00.txt
Status of this Memo
This document is an Internet-Draft and is in full conformance with
all provisions of Section 10 of RFC2026.
Internet-Drafts are working documents of the Internet Engineering
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This Internet-Draft will expire on November 15, 2002.
Copyright Notice
Copyright (C) The Internet Society (2002). All Rights Reserved.
Abstract
This memo describes some of the scoring to be used in the testing of
Stream Control Transmission Protocol (SCTP) at upcoming bakeoffs.
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Base protocol . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1 Basic Communication . . . . . . . . . . . . . . . . . . . . . 4
2.2 Beyond Basic Communication . . . . . . . . . . . . . . . . . . 5
3. Protocol Extensions . . . . . . . . . . . . . . . . . . . . . 7
3.1 Partial reliable SCTP . . . . . . . . . . . . . . . . . . . . 7
3.2 AddIP . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4. Bonus Points . . . . . . . . . . . . . . . . . . . . . . . . . 8
References . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . 10
Full Copyright Statement . . . . . . . . . . . . . . . . . . . 11
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1. Introduction
This document will be used as a basis for point scoring at upcoming
SCTP bakeoffs. Its purpose is similar to that described in RFC1025.
It is hoped that a clear definition of where and how to score points
will further the development of SCTP RFC2960 [4].
Note that while attending a bakeoff no one else will score your
points for you. We trust that all implementations will faithfully
record their points that are received honestly. Note also that these
scores are NOT to be used for marketing purposes. They are for the
use of the implementations to know how well they are doing. The only
reporting that will be done is a basic summary to the Transport Area
Working Group but please note that NO company or implementation names
will be attached.
Note Bene: Checksums must be enforced. No points will be awarded if
the checksum test is disabled.
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2. Base protocol
The base protocol is described in the follwing documents:
RFC2960 [4]
IMPLGUIDE [5]
SCTPIPV4 [8]
SCTPIPV6 [7]
CHKSUM [6]
2.1 Basic Communication
These points will be scored for EACH peer implementation that you
successfully communicate with.
2 points for being the sender of the INIT chunk and completing
setup of an association.
2 points for being the sender of the INIT-ACK chunk and completing
setup of an association.
1 point for sending data on the association where you sent the
INIT.
1 point for sending data on the association where you sent the
INIT-ACK.
2 points for gracefully ending the conversation by being the
sender of the SHUTDOWN.
2 points for gracefully ending the conversation by being the
sender of the SHUTDOWN-ACK.
4 points for repeating the above without reinitializing the SCTP.
In order to receive all of the above points (14) an implementation
will need to:
o send a INIT chunk and setup an association.
o send a data chunk on that association.
o receive a data chunk on that association.
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o send a SHUTDOWN chunk and bring the association to a close.
o receive a INIT-ACK and setup a new association (after the previous
one is closed).
o send a data chunk on that association.
o receive a data chunk on that association.
o receive a SHUTDOWN chunk and send a SHUTDOWN-ACK and close the
association.
o without restarting repeat these steps once.
You can get 5 extra points if you do not include any address
parameter in the INIT-/INIT-ACK chunk in case you are using ony one
of your addresses.
2.2 Beyond Basic Communication
10 points for bring up multiple associations at the same time to
different implementations. The implementation must send and
receive data on both associations simultaneously.
15 points for correctly handling ECN.
10 points for correctly handling both Transmission Sequence Number
(TSN) and Stream Sequence Number (SSN) wrap around.
5 points for correctly being able to process a "Kamikaze" packet
(AKA nastygram, christmas tree packet, lamp test segment, et al.).
That is, correctly handle a segment with the maximum combination
of features at once (e.g., a COOKIE-ECHO, SACK, ASCONF, UNKNOWN-
CHUNK, SHUTDOWN).
5 additional points if the response to the "Kamikaze" packet is
bundled.
10 additional points if the implementation supports ECN and thus
the "Kamikaze" packet is expanded to include COOKIE-ECHO, SACK,
ECN, ASCONF, UNKNOWN-CHUNK, SHUTDOWN.
30 points for KOing your opponent with legal blows. (That is,
operate a connection until one SCTP or the other crashes, the
surviving SCTP has KOed the other. Legal blows are chunks that
meet the requirements of the specification.)
20 points for KOing your opponent with dirty blows. (Dirty blows
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are packets or chunks that violate the requirements of the
specification.)
10 points for showing your opponents checksum is disabled or using
the old checksum aka Adler-32 CHKSUM [6].
10 points for showing you can fast-retransmit.
10 points for showing your t3-timer retransmits to an alternate
destination (aka uses the multi-homed facility during
retransmission.
10 points for properly demonstrating the partial delivery API.
10 points for demonstrating recognition and proper handling of
restart.
10 points for correctly handling INIT collision.
10 points for correctly handling a the STALE COOKIE case.
10 points for doing bulk transfer for over 10 Minutes at a high
constant rate.
5 points for handling the restart with a data transfer after that.
10 points for proving that your opponent accepts additional
addresses during the restart compared to the original association.
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3. Protocol Extensions
3.1 Partial reliable SCTP
This extension is currently being described in PRSCTP [10]
10 points for sending a FWD-TSN to skip a "timed-out" data chunk.
10 points for correctly adopting the new cumulative-ack point
indicated by a FWD-TSN.
10 points for freeing data chunks to the application that were
held awaiting the FWD-TSN.
10 points for properly handling the partial-delivery API where the
last part of a message already being delivered is subjected to a
FWD-TSN.
3.2 AddIP
This extension is currently being described in ADDIP [9].
10 points for adding an IP address to an existing association.
10 points for deleting an IP address from an existing association.
10 points for requesting that your peer set a primary address.
10 points for showing that you honored the request to set a
primary address and thus adopted a new primary address.
10 points for showing that your opponent does not do the address
scoping as described in SCTPIPV4 [8] and SCTPIPV6 [7] correctly.
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4. Bonus Points
You can also Bonus Points (directly from RFC1025 [1] :>)
10 points for the best excuse.
20 points for the fewest excuses.
30 points for the longest conversation.
40 points for the most simultaneous connections.
50 points for the most simultaneous connections with distinct
SCTPs.
50 points for hijacking an existing association between other
participants.
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References
[1] Postel, J., "TCP and IP bake off", RFC 1025, September 1987.
[2] Bradner, S., "The Internet Standards Process -- Revision 3",
BCP 9, RFC 2026, October 1996.
[3] Bradner, S., "Key words for use in RFCs to Indicate Requirement
Levels", BCP 14, RFC 2119, March 1997.
[4] Stewart, R., Xie, Q., Morneault, K., Sharp, C., Schwarzbauer,
H., Taylor, T., Rytina, I., Kalla, M., Zhang, L. and V. Paxson,
"Stream Control Transmission Protocol", RFC 2960, October 2000.
[5] Ong, L., Poon, K., Stewart, R. and I. Rodriguez, "SCTP
Implementors Guide", draft-ietf-tsvwg-sctpimpguide-05 (work in
progress), May 2002.
[6] Stone, J., Otis, D. and R. Stewart, "Stream Control
Transmission Protocol (SCTP) Checksum Change", draft-ietf-
tsvwg-sctpcsum-07 (work in progress), May 2002.
[7] Deering, S. and R. Stewart, "IPv6 addressing and Stream Control
Transmission Protocol", draft-stewart-tsvwg-sctpipv6-01 (work
in progress), April 2002.
[8] Stewart, R. and M. Tuexen, "IPv4 Address handling for SCTP",
draft-stewart-tsvwg-sctpipv4-00 (work in progress), May 2002.
[9] Stewart, R., "SCTP Extensions for Dynamic Reconfiguration of IP
Addresses", draft-ietf-tsvwg-addip-sctp-05 (work in progress),
May 2002.
[10] Stewart, R., Ramalho, M., Xie, Q. and M. Tuexen, "SCTP Partial
Reliability Extension", draft-stewart-tsvwg-prsctp-00 (work in
progress), May 2002.
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Authors' Addresses
Randall R. Stewart
Cisco Systems, Inc.
8725 West Higgins Road
Suite 300
Chicago, IL 60631
USA
Phone: +1-815-477-2127
EMail: rrs@cisco.com
Michael Tuexen
Siemens AG
ICN WN CC SE 7
D-81359 Munich
Germany
Phone: +49 89 722 47210
EMail: Michael.Tuexen@icn.siemens.de
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