
23Analysis and Simulation of Computer Networks with Unlimited Buffers
us the value of λ
c
= 0.19977, less than for the homogeneous network, and β = 0.9859 ± 0.0018
(Figure1.19). The pattern of large uctuations for the network loads close to the critical point is
shown in Figure 1.20.
The most dramatic effect of the heterogeneous activity is the formation of domains of two dif-
ferent phases of low and high activity, respectively, and, correspondingly, domains of small and
large queue lengths, as shown in Figure 1.21. The characteristic size of the domains is much larger
than the interaction distance (distance l between the source and the dest ...