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Dr. Jason But - Research Portfolio
Grant Applications
Listed below are both successful pending Grant and Funding applications I have
been involved in since joining CAIA
A list of teaching related grants can be found within my
Teaching Portfolio
FreeBSD implementation of an SCTP friendly NAT
| Type: |
Cisco
Request for Proposal (RFP) Grant |
| Amount: |
$(US) 72,830 |
| Status: |
Current (Due to conclude in Decembet 2008) |
| Abstract: |
Network Address Translation (NAT) is typically used to share a single Internet
address amongst a number of users. Extending the common approach used in NAT
implementations for TCP and UDP to the SCTP protocol is not viable - the SCTP
protocol specification would require checksums for the whole packet (not just
the header) to be re-calculated for each packet - particularly for small home
router implementations. Further, SCTP also offers multi-homing which offers new
challenges for the NAT code to track in a single SCTP connection. We propose to
develop a NAT implementation to support SCTP to be released for the FreeBSD 6.2
(or its replacement as of August 2007) platform. Our release code will utilise
an existing NAT framework such as ipfw or ipf such that it can be practically
deployed on real systems. The NAT will track SCTP connections via the Verification
Tag (VTag) field and retain connection details should one end of a multi-homed
session change end-points. We also propose to test this implementation under a
number of different usage and failure-mode scenarios, the results of these tests
will be published and can be used to promote the use of SCTP "in-the-wild". |
Analysis of BitTorrent Performance in a Content Caching Context
| Type: |
Swinburne
Researcher Development Scheme |
| Amount: |
$27,491 |
| Status: |
Current (Due to conclude in September 2007) |
| Abstract: |
The ICE3 project at CAIA attempts to characterise the performance and service
quality impact of inverting the network content and capacity hierarchy, in
particular with regard to existing networked applications. One of the conjectures
is that this increase in edge bandwidth will not necessarily improve perceived
Internet performance without the location of local content caches around the
edge of the network. This may be true for traditional caching schemes but the
recent popularity of new protocols like BitTorrent have turned content
distribution (particularly for large downloads) on its head, pushing the load
of delivering content onto users participating on downloading that content
rather than just on the content supplier.
This project will seek to analyse the performance of BitTorrent in the current
network architecture and to develop model to accurately predict its performance
in an inverted hierarchy network. It is expected that this will allow us to
accurately compare the performance of BitTorrent against that of traditional
caching schemes in the realm of content delivery. |
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