Assignment Types:

The set of parameters associated with the Bottom-up model include $NumAS$, the number of ASs requested by the user. BRITE then assigns router-nodes to ASs in one of the following ways:

• Constant: Assign each AS an equal number of router-level nodes, i.e. $NumNodes/NumAS$, where $NumNodes$ is the number of nodes in the router-level topology.

• Uniform: Pick a value uniformly distributed in $[1, NumNodes]$.

• Exponential: Pick a value exponentially distributed with mean $\frac{NumNodes}{NumAS}$.

• Heavy-tailed: Pick a value from a truncated heavy-tailed distribution between $1$ and $NumNodes$.