traffic&QoS

トラヒックサービス品質の話題を提供

MRTGじゃない表示ツール

2008-07-11 07:07:23 | Weblog
MRTGじゃない表示ツール cacti

いわく、the complete rddtool-based graphing solution

日本語のfanページ
サバカンのcactiによるネットワーク監視システム構築ガイド


もともとは、この中の7/20記事

例のJANOG19の中にも言及している例があった。

【連載 】SNMPによるネットワークシステムの監視


ジョージア工科大のセミナー 2003年秋

2007-09-07 14:09:25 | Weblog
ジョージア工科大のセミナー 2003年秋

Network Measurements seminar

学生の調査発表多数

Traffic characterization (protocol & application mix, flow sizes, packet sizes, etc)
Presenter: Amogh Dhamdhere

Delay and loss measurements and modeling
Presenter: Sanjeev Dwivedi

Per-hop and end-to-end capacity estimation
Presenter: Ravi Prasad

Available bandwidth estimation
Presenter: Manish Jain

TCP-related measurements
Presenter: Charles Simpson (Robby)

Internet traffic predictability (stationarity, "constancy", etc)
Presenter: Zhongtang Cai

Network distance estimation
Presenter: Sridhar Srinivasan

Internet traffic variability (long-range dependency effects)
Presenter: Dheeraj reddy

Flow measurements (counting, sampling, etc)
Presenter: Abhishek Kumar

Interdomain routing reliability measurements
Presenter: Srini Seetharaman

Interdomain routing performance measurements
Presenter: Xenofontas Dimitropoulos

Measurements in overlay networks
Presenter: Cameron Craddock

Traffic matrix estimation and applications in traffic engineering
Presenter: Mehmet Umut Demircin

Internet topology measurements
Presenter: Yang Chen

Network tomography
Presenter: Christos Gkantsidis

Use of measurements in anomaly detection (flash crowds, DDOS attacks, etc)
Presenter: Bugra Gedik

DNS measurements
Presenter: Hua Huang

Web performance measurements
Presenter: Yi Ma

Measurement-based admission control
Presenter: Parag Shah

Measurements of peer-to-peer systems/applications
Presenter: Pradnya Karbhari

Measurements of streaming/multimedia/gaming applications
Presenter: Ali Cengiz Begen

SDHの品質目標

2007-02-19 16:27:25 | Weblog
ITU-T勧告

G.828 Error performance parameters and objectives for international, constant bit-rate synchronous digital paths  Approved in 2000-03
http://www.itu.int/rec/T-REC-G.828-200003-I/en


G.829 Error performance events for SDH multiplex and regenerator sections  Approved in 2002-12
http://www.itu.int/rec/T-REC-G.829-200212-I/en


関連では、
Availability and Performance Evaluation of your PDH/SDH Networks
http://www.nettest.com/upload/pdh_sdh_networks_002.pdf
http://www.syrus.ru/files/docs/control/tech/White_Paper_Performance.pdf
NETTESTって、アンリツの子会社。