As networking systems have become more complex and expensive, hands-on experiments based on networking simulation have become essential for teaching the key computer networking topics to students. The simulation approach is the most cost effective and highly useful because it provides a virtual environment for an assortment of desirable features such as modeling a network based on specific crit...

The best-known media gateway control protocols are currently Media Gateway Control Protocol (MGCP) and Megaco/H.248. MGCP, described as informational RFC 2705, has been widely deployed. Megaco/H.248 has evolved from MGCP. It is a single unified protocol that resulted from the cooperation between the Internet Engineering Task Force (IETF) and the International Telecommunication Union (ITU). Mega...

Self-similar (s-s) arrival processes are realistic models for many types of network traffic. Unfortunately, generating synthetic s-s arrivals and interarrival times for simulations is rather involved. This paper discusses six issues related to s-s traffic generation for discrete-event simulations: (i) what s-s processes are, and why they are important to network modelers; (ii) where to find a f...

Recent evaluation of ad hoc networks has shown that current techniques do not scale well with either network size or desired throughput. We argue that the greatest opportunity for improvement is in the integration and coupling of different network layers. To this end, we are building a “relay network” design in which end-to-end path resources are pre-allocated to avoid the cost of channel acqui...