UDP Checksum Trailer in OWAMP and TWAMP
draft-mizrahi-ippm-checksum-trailer-02
| Document | Type |
Replaced Internet-Draft
(candidate for ippm WG)
Expired & archived
|
|
|---|---|---|---|
| Author | Tal Mizrahi | ||
| Last updated | 2014-12-17 (Latest revision 2014-12-14) | ||
| Replaces | draft-mizrahi-owamp-twamp-checksum-trailer | ||
| Replaced by | draft-ietf-ippm-checksum-trailer | ||
| RFC stream | Internet Engineering Task Force (IETF) | ||
| Intended RFC status | (None) | ||
| Formats | |||
| Additional resources | Mailing list discussion | ||
| 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) |
This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:
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.)