UDP Checksum Trailer in OWAMP and TWAMP
draft-mizrahi-ippm-checksum-trailer-02
| Document | Type | Replaced Internet-Draft (candidate for ippm WG) | |
|---|---|---|---|
| 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
pdf
htmlized
bibtex
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| Stream | WG state | Call For Adoption By WG Issued | |
| Document shepherd | No shepherd assigned | ||
| IESG | IESG state | Replaced by draft-ietf-ippm-checksum-trailer | |
| Consensus Boilerplate | Unknown | ||
| Telechat date | |||
| 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
Tal Mizrahi (talmi@marvell.com)
(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)