UDP Checksum Trailer in OWAMP and TWAMP
draft-mizrahi-ippm-checksum-trailer-02
Document | Type | Replaced Internet-Draft (candidate for ippm WG) | |
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Author | Tal Mizrahi | ||
Last updated | 2014-12-17 (Latest revision 2014-12-14) | ||
Replaces | draft-mizrahi-owamp-twamp-checksum-trailer | ||
Replaced by | RFC 7820 | ||
Stream | Internet Engineering Task Force (IETF) | ||
Intended RFC status | (None) | ||
Formats |
Expired & archived
plain text
htmlized
pdfized
bibtex
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Stream | WG state | Call For Adoption By WG Issued | |
Document shepherd | (None) | ||
IESG | IESG state | Replaced by draft-ietf-ippm-checksum-trailer | |
Consensus boilerplate | Unknown | ||
Telechat date | (None) | ||
Responsible AD | (None) | ||
Send notices to | (None) |
https://www.ietf.org/archive/id/draft-mizrahi-ippm-checksum-trailer-02.txt
Abstract
The One-Way Active Measurement Protocol (OWAMP) and the Two-Way Active Measurement Protocol (TWAMP) are used for performance monitoring in IP networks. Delay measurement is performed in these protocols by using timestamped test packets. Some implementations use hardware-based timestamping engines that integrate the accurate transmission timestamp into every outgoing OWAMP/TWAMP test packet during transmission. Since these packets are transported over UDP, the UDP checksum field is then updated to reflect this modification. This document proposes to use the last 2 octets of every test packet as a Checksum Trailer, allowing timestamping engines to reflect the checksum modification in the last 2 octets rather than in the UDP checksum field. The behavior defined in this document is completely interoperable with existing OWAMP/TWAMP implementations.
Authors
(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)