UDP Checksum Trailer in OWAMP and TWAMP
draft-mizrahi-owamp-twamp-checksum-trailer-01
Document | Type |
Replaced Internet-Draft
(individual)
Expired & archived
|
|
---|---|---|---|
Author | Tal Mizrahi | ||
Last updated | 2014-01-14 (Latest revision 2013-10-08) | ||
Replaced by | draft-mizrahi-ippm-checksum-trailer | ||
RFC stream | (None) | ||
Intended RFC status | (None) | ||
Formats | |||
Stream | Stream state | (No stream defined) | |
Consensus boilerplate | Unknown | ||
RFC Editor Note | (None) | ||
IESG | IESG state | Replaced by draft-mizrahi-ippm-checksum-trailer | |
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This Internet-Draft is no longer active.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.)