1 / 6

Diagnostic test for MPLS transport profile draft-flh-mpls-tp-oam-diagnostic-test-01

Diagnostic test for MPLS transport profile draft-flh-mpls-tp-oam-diagnostic-test-01. IETF79, Beijing, 8th-12th, November, 2010 Feng Huang ( Alcatel Lucent) Lieven Levrau (Alcatel Lucent) Han Li (China Mobile) Ruiquan Jing (China Telecom). Update from 00 to 01.

vinny
Download Presentation

Diagnostic test for MPLS transport profile draft-flh-mpls-tp-oam-diagnostic-test-01

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Diagnostic test for MPLS transport profiledraft-flh-mpls-tp-oam-diagnostic-test-01 IETF79, Beijing, 8th-12th, November, 2010 Feng Huang ( Alcatel Lucent) Lieven Levrau (Alcatel Lucent) Han Li (China Mobile) Ruiquan Jing (China Telecom)

  2. Update from 00 to 01 • Draft-00 was created in October 2009 • Draft 01 was created in May 2010. • describes out-of-service test in detail

  3. General overview • Chapter 2.2.5 of RFC5860 describe diagnostic tools’ requirement • Chapter 6.3.of draft-ietf-mpls-tp-oam-framwork provides diagnostic tools’ framework • Diagnostic Test provides on demand tools of one way or two way in-service or out-of-service performance diagnostic test such as bandwidth, throughput, frame loss, bit errors etc, on pw, lsp and section layers.

  4. TST Process A MEP inserts TST packets towards its peer MEPs, with MPLS-TP test information as specified throughput (i.e. a provisioned transmission rate for TST packets), packet size, bit errors and transmission patterns. The receiving MEP detects these TST packets and performs the intended measurements. When “out-of-service” MPLS-TP test function is performed, client data traffic is disrupted in the diagnosed entity (and LCK info is communicated towards client layer). When an “in-service” MPLS-TP test function is performed, data traffic is not disrupted and the packets with MPLS-TP test information are transmitted up to a pre-determined part of the service bandwidth (provisioned rate).

  5. Example-out of service throughput estimation • LCK the transport path, MEPs periodically transmit Alarm packets to indicate that path is in LCK state • Source MEP sending OAM test packets at increasing rate (up to the theoretical maximum), graphing the percentage of OAM test packets received and reporting the rate at which OAM test packets begin to drop. Alarm (out-of-service) Alarm (out-of-service) LCK frames to client layer (out-of-service test) LCK LCK Client MEP Client MEP TST T R Defect detection at client MEP R T MEP MEP TST TST applied to a Path MEP  TST packets transmitted to peer MEP (e.g. PRBS @ configured rate) If out-of-service, then client traffic disrupted  LCK & Alarm Tx side (source) T Rx side (sink) R

  6. Next step • Comments? • Work group doc? 

More Related