Simple network topology used for the initial simulations

Contexts in source publication

Context 1

... have done an initial testing of the performance of the fuzzy-RED queue management using the ns simulation tool with the simple network topology shown in Figure 3 (also used by other researchers for RED performance and evaluation [14]). The buffer size was set to 70 packets (max packet size 1000 bytes), the min threshold (minth) for RED was 23 packets and the max threshold was 69 packets. ...

Context 2

... throughput goes up to the 99.7% of the total link capacity (40 Mbps link) and the average queue size is around half the capacity of the buffer while maintaining a sufficient amount of packets in the queue for achieving this high throughput. While these are results from a very basic scenario (see Fig. 3) they demonstrate the dynamic abilities and capabilities of an FIE RED queue compared to a simple RED queue or a classical droptail queue. The results presented in the following simulation scenarios shows that these characteristics and abilities are maintained under all conditions without changing any parameters of Fuzzy-RED. ...

Context 3

... the graph RIO seems to stabilise its throughput around 10.25 Mbps (note that the link speed is limited to 10 Mbit/sec). This means that it can't effectively control the rate at which the sources are sending traffic (according to the ideal scenario shown in Figure 3). Around t=2500sec we see a small ascending step. ...

Context 4

... define goodput as the traffic rate traversing a link minus all dropped packets and all retransmitted packets. From Figure 13 we see that Fuzzy-RED delivers a steady goodput around 9.9 Mbps while RIO has a decrease from 9.9 to 9.8 due to dropped packets that create retransmissions. The difference is not as important as the fact that Fuzzy-RED seems to provide a more stable behaviour. ...