Bangladesh PingER sites
SLAC monitors 4 sites in Bangladesh. They are seen below in the map.
 |  |  |  |  |
Bangladesh sites seen from SLAC
The Ping Round Trip Times (RTTs) are seen below. We observe:
- The black bar (no data or host unreachable - 100% packet loss) observed 2014-09-05 in all plots is due to the host at SLAC being down and not making the measurements.
- The median RTTs seen from SLAC are relatively consistent from site to site and around 350ms,
- The lack of regular day vs night variations in the RTTs suggest that the links are not congested.
- The RTTs for each site are also relativlet consistent (little jitter) with few large RTTs.
- Daffodil appears to have the lowest loss rates (backgound color is usually cyan meaning no loss
- BRAC university was experiencing of lot of unreachability (black) and was no longer reachable towards the end of September.
- DUET experienced a lot of packet loss (note yellow and orange backgrounds) until mid August 2014.
- RU had a burst of lossiness (magenta background) between Oct 12 and Oct 15 29014.
- The spike in RTT seen 2014-09-24 indicates a possibel common cause (ie.a a link shared between all sites)
More detail for the Daffodil site are seen below:
Traceroutes from SLAC
The route from SLAC to Daffodil goes from SLAC to Palo Alto (3 miles away), to New York, London, Paris, Mumbai and Bangladesh.
The route to BRAC is similar.
The routes from SLAC to DUET and RU goes from SLAC and the San Francisco Bay Area to Dallas, Palermo Italy and thence to Bangladesh