Traffic Analysis and model synthesis of remote instrumentation - dorii

11 2001:760:2000::8 (2001:760:2000::8) 47.167 ms 47.023 ms 46.995 ms
12 2001:760:2000:2000::28 (2001:760:2000:2000::28) 46.591 ms 46.575 ms 46.534 ms
Browser
Instrument element
(EUCENTRE)
2001:760:2000:2000::28
Virtual control room
(GRNET)
2001:648:2320:7:250:56FF:FE9B:4806
VCR
Ipv6 connection
Seismic
Network
Unversity of
Genoa through
GARR
Ipv4 connection
Figure 23 Test bed Setup
Figure 23 summarizes the basic components of the DORII middleware and how they interact in this
application. The web portal in the VCR acts as the user interface in order to perform all the
operations. The IE is the gateway to the instrument that in this case is a seismic sensors network.
The IE is in charge of the monitoring and local storage of seismograms, in case that a potential
seismic event is detected.
The user launches the following computation procedure: the files are moved to a SE in order to be
accessed from everywhere in the grid domain. The executable is passed to a CE, which then stores
the results back to the SE. The results are the input seismic data in binary format provided with the
P-wave onset time reference. Moreover, the details of the event and the P wave are shown to the
user through the VCR. It is clear that the workflow is made up of two different parts: interaction
with instrument and computation.
Furthermore, Figure 24 shows a snapshot concerning the monitoring of the IPv6 traffic between
EUCENTRE and GRNET during a testing period.
Finally, Figure 25 highlights a traffic trace between the VCR and the IE captured by using
TCPDUMP.
DSA1.5 PUBLIC 24