1 / 9

LAN and WAN Monitoring at SLAC

LAN and WAN Monitoring at SLAC. Connie Logg September 21, 2005. 4 Main Areas. LAN Internet Traffic Monitoring via Netflow Traffic types and quantity primary sources & destinations WAN Performance Testing and Analysis PINGER. LAN Monitoring. “model” the network to understand connectivity

karah
Download Presentation

LAN and WAN Monitoring at SLAC

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. LAN and WAN Monitoring at SLAC Connie Logg September 21, 2005

  2. 4 Main Areas • LAN • Internet Traffic Monitoring via Netflow • Traffic types and quantity • primary sources & destinations • WAN Performance Testing and Analysis • PINGER

  3. LAN Monitoring • “model” the network to understand connectivity • I/O byte/packet counts, errors, discards, broadcast and multicast stats for all the active connections on the SLAC network • Each connection has its own web page • Allocation of endpoints and address space – summary page

  4. Internet Traffic Monitoring Analyze Netflow records to determine • Types of traffic – Daily summary page • Major external and internal sources of traffic

  5. WAN Performance Measurement and Analysis • IEPM-BW (since 2001) – distributed to (CERN, CALTECH, BNL, NIIT, FNAL & SLAC) • Runs periodic probes to defined targets around the world – low bandwidth links only run traceroute and ping • reports are generated of the performance seen • Data from monitoring is analyzed for anomalies (email alerts generated)

  6. Email Alert Report Example From: Connie Logg [iepm@slac.stanford.edu] Sent: Saturday, September 17, 2005 6:45 PM To: Logg, Connie A.; Cottrell, Les; Nazir, Fawad Subject: iepm-bw.slac.stanford.edu Alert: (node1.dl.ac.uk,tlaytcp) Traceroute Summary Table for Today node1.dl.ac.uk BANDWIDTH DROP Date: 09/16/2005, Time = 23:34:24, %drop=97.9, Past (mean, stdev) = (37.9, 16.1) Trigger (mean,stdev) = (0.8,0.2) Graph of all the data Additional Information for Node= node1.dl.ac.uk, probetype = tlaytcp At epoch time = 1126938864, 09/16/2005 23:34:24

  7. PINGER • Started in 1992 – to check connectivity with our collaborators • With DOE funding it was developed further and extended to monitoring the world • In heavy use today (30 monitoring nodes) • Total: 3665 pairs to 1010 remote nodes at 726 sites in 123 countries (8/05) • Very useful for monitoring the digital divide and baselining connectivity around the world

  8. C. Asia, Russia, S.E. Europe, L. America, M. East, China: 4-5 yrs behind India, Africa: 7 yrs behind World “Quality” S.E. Europe, Russia: catching up Latin Am., Mid East, China: keeping up India, Africa: falling behind Important for policy makers Many institutes in developing world have less performance than a household in N. America or Europe

  9. Additional Information • LAN • Quick Guide (links not visible outside of SLAC) • Internet Traffic • Netflow Analysis • IEPM-BW WAN Monitoring • Report • PINGER • Network Monitoring for SCIC

More Related