MAGGIE NIIT- SLACOn Going Projects

Measurement & Analysis of Global Grid & Internet

End to end performance

Team MembersSLAC

• Les Cottrell• Yee-Ting Li• Asif• Shahryar• Akbar

NIIT• Arshad Ali• Umar Kalim• Adnan Iqbal• Faran Javed• Fahad Satti• Nauman

Projects

• PingER • DataGrid WAN Monitoring Infrastructure

(DWMI) Terapaths Monitoring Project• Trilateration Utility for Locating IP

Addresses • Event Detection• Event Diagnosis• Topology Service for PerfSONAR• Network Weather Forecasting• Proposals under discussion

PingER Methodology

Internet

10 ping request packets each 30 mins

RemoteHost(typicallya server)

Monitoring host

>ping remhost

Ping response packets

Measure Round Trip Time & Loss

Data Repository @ SLAC

On

ce a Day

Uses ubiquitous ping

PingER (Sub Projects)

Most of South Asia has good connectivity

• Greater Coverage Area• Min RTTs are decreasing globally

For S.Asia Loss decreasing, still far behind others

• SmokePing PingER Integration • ViPER - Visualization for PingER • AMP PingER Integration• PingER Executive Plots• PingER Management • ICFA/SCIC Report

DataGrid WAN Monitoring Infrastructure (DWMI) Terapaths Monitoring Project

• Terapath

• fully configurable passive monitoring infrastructure based on netflow records exported from routers

• data collection and aggregation schemes

• Flexible reporting infrastructure

Traffic In

Traffic out

Topology Service for PerfSONAR

• PerfSONAR • Measurement Point Service• Measurement Archive Service• Authentication Service• Lookup Service• Topology Service• Transformation Service

Topology Service for PerfSONAR

• To archive network topology information needed for the operation of perfSONAR and

• Visualization tools. • Each AS has to maintain its own topology database and

publish it to the perfSONAR framework. • The ToS will define a topology information data format

to allow for an easy processing of topology information. • Beside of the current topology, it should contain past

and planned network configuration. • Each AS should register its ToS with the Lookup

Service, so that the topology becomes available to every interested user.

Trilateration Utility for Locating IP Addresses (TULIP)

• www.slac.stanford.edu/comp/net/wan-mon/tulip/ • Java applet (needs Java Webstart)• Friendly client, easy vizualization• Need landmarks around world

LandmarksTarget

Enter target

Pings min/avg/max from landmarks to targets

Traceroutes from landmarks to targets

Automated Event DetectionBased on IEPM-BW

Different Network Monitoring tools (Ping, IPerf, Thrulay, Pathchirp etc)

Variety of Metrics (Throughput, RTT, available bandwidth, Traceroutes)

Topology (5 Monitoring Hosts, Over 25 Monitored nodes)

Different Mechanisms (Holt-winters, Plateau etc)

Alerts are

• Detected • Reported through e-mail• Stored in database• Made available on web

Event Diagnosis• End-to-end analysis; assume that

the problem may not just be from the network

• Initiate analysis of all available results when an event is detected

• Search Event DB for each metric checked on each host and used to cross correlate results between Monitoring Hosts or Monitored Nodes

• Use heuristics defined with a simple summation algorithm to narrow down the location of a fault.

• Tiered system used to pin-point exact cause of problem.

• Start from high level to very low level to help locate, identify and verify cause of alert

Heuristics based approach

Proposals (under process)

• To establish a network monitoring infrastructure in Pakistan

• Next Generation Network Monitoring for Pakistan

• to join the International perfSONAR project (currently: Europe, US & Brazilian NRENs):