all components have multiple configurable attributes. components all inter-operable ... networks and hosts may be abbreviated or omitted. Hierarchy Example. Net ...
BGP can explore many alternate paths before giving up or arriving at a new path ... Clique: Rounds Collide. heavier workload: rounds collide. 24. Clique: Average Times ...
Implement multi-phase link proxy setup for feedback based protocols. ... Support for link proxies to enable use with Genesis TCP Sources. Performance Comparison ...
Progress in On-Line Network Simulation and Modeling ... Progress in the Overall Project. PI's: C. Carothers, S. Kalyanaraman, B. Sikdar, B. Szymanski ...
software for modeling and simulation of computer networks. Java-based ... hash table instead of radix tree. aggregation no longer possible. 40% memory reduction ...
With Jason Liu, David Nicol and Michael Liljenstam. December 7, 2001 ... We can use a lot of help to turn the duckling. into the SWAN it's meant to be. ...
computer systems. Network Simulation & Modeling. Large & complex, emergent behaviors. ... Provide quick validation of ideas. Study system behavior at larger ...
Constraints due to ISP independence. Be individually beneficial ('win-win' ... What is the overhead of Wiser? Methodology: Combine measured data and realistic models ...
severity of misconfiguration or maliciousness. number of misbehaving routers ... Can attacks and misconfigurations be detected? How can we speed up convergence ...
Discrete Event Simulation (DES) Parallel DES and the synchronization problems ... the simulation time is overwhelming or the simulation is just untractable. example: ...
P2P systems form overlays at application layer. neighbour selection arbitrary. routing ... Generate variegated network scenarios and traffic environments ...
Delayed Internet Routing Convergence due to Flap Dampening. Z. Morley Mao ... 12.29.64|4608|199.5.187.0/24|4608 1221 4637 7176 1 701|IGP|202.12.29.64|0|0||NAG ...
What Is BGP? Border Gateway Protocol BGP-4. The de-facto interdomain routing protocol ... A prefix is a group of IP addresses. 128.32.101.5 is an IP address (32 bits) ...
Providing end-to-end Quality of Service in IP networks still remains a ... Multiple routing tables, as e2e CoSs usually need disjointed paths. RMA. RMB. RMC ...
Efficient BGP Security Meiyuan Zhao, Sean Smith Dartmouth College David Nicol University of Illinois, Urbana-Champaign Motivation BGP central routing for the ...
No new paths are advertised to A. A's policy is unchanged ... Prefix owners (edge ASs) can artificially cause events! More simulations and validation ...
On Designing and Thwarting Worms using Co-ordination. Jayanthkumar Kannan ... Some worms caused congestion in the backbone ... and faster worms using DHTs. ...
Border Gateway Protocol BGP-4 The de-facto ... approx. Corporate Networks ISP Internal Networks National ... Use BGP Graph and Routing Policies Up then ...
Can lead to large scale 'failures' Inability of access or diversion to malicious sites. ... Aggregation of large un-owned IP blocks. Incompatible policies among AS'es ...
QoS framework for QoS-driven shared tree multicast routing. Exploitation of long range dependency on Internet ... Callout queue. Route management. Message queue ...
According to a study on the Internet's structure, its reliance on a few key ... of server attacks,including TCP SYN, Smurf IP, ICMP flood, and Ping of Death attacks. ...
An Experimental Analysis of BGP Convergence Time. Timothy G. Griffin. AT&T Research ... Brian J. Premore. Dartmouth College. November 12, 2001. Two-level ...
Simulation for Grid Computing Henri Casanova Univ. of California, San Diego casanova@cs.ucsd.edu Grid Research Grid researchers often ask questions in the broad area ...
Interplay between these areas is not obvious! Various tradeoffs in 'realism', control, etc. ... Realism. Long-running services attract real users. Connectivity ...
Allow easy comparison of similar protocols. Increase confidence in results ... The most popular non-commercial discrete event packet-level simulator ...
Other research students will help from time to time. Shivkumar Kalyanaraman ... Poke/Peek around the network: peek at packets, measure n/w performance, collect ...
Complexity of large internetworks. Internetworks and routing. Routing instability ... Complexity of components. Congestion avoidance in data transfer protocols ...