1. PingER Management

2. Motivation The PingER database stores ping results from a huge number of monitoring site -remote site pairs. The PingER database stores ping results from a huge number of monitoring site -remote site pairs. The interface of PingER just presents all this data, with no distinction between down sites, sites showing anomalous rtt values etc. The interface of PingER just presents all this data, with no distinction between down sites, sites showing anomalous rtt values etc. An administrator has to see everyday An administrator has to see everyday –whether all sites and nodes are up ? –Are there any anomalous sites and nodes ? –Is the data collected by monitoring sites valid or not ?

3. Proposed Solution This system would automatically This system would automatically –Store the latest results regarding down sites and down nodes on the web –Find out Anomalous sites –Find out invalid data and mismatch TLD’s (Top Level Domains) in the PingER database –Make various histograms and pie charts to help the Administrator to find the current status of the PingER system –Optionally Email the current status of the sites and nodes to the Administrator

4. Problems with previous implementation Storage of too much redundant information. Storage of too much redundant information. Very inefficient database design Very inefficient database design –Too many databases and tables –(6 databases and 30 tables) –Same information stored in multiple tables

5. New design Total of 5 tables, each concerned with a separate and independent issue : Total of 5 tables, each concerned with a separate and independent issue : –Downsites –Dramatic rtt Anomaly –Invalid Data –NOT-Set –Invalid TLD

6. Done Downsites DownsitesTimeStampMon_SiteRem_SiteSiteStatusDowndaysMon_CountryRem_CountryMon_Region Rem_ Region

7. Done Dramatic rtt Anomaly Dramatic rtt AnomalyMon_SiteRem_SiteMinrttSdrttTimeStampMon_CountryRem_CountryMon_Region Rem_ Region

8. To be done NOT- Set NOT- Set Invalid TLD Invalid TLD Invalid Data Invalid Data

9. Documents http://pinger2.niit.edu.pk/apache2-default/Pingermanagement/index.html http://pinger2.niit.edu.pk/apache2-default/Pingermanagement/index.html