A typical Transit-Stub topology 10 WAN nodes. 10 MANs with 10 nodes encl 50 LANs with 5 nodes each. Total: 360 node 5000 4500 WAN 4000 MAN LAN B月783 啊 2000 1500 我 2000 Horzontal Distance (unit distance Degree distribution of a transit-Stub network with 6660 nodes (Medina et al., 2000)
A typical Transit-Stub topology Degree distribution of a Transit-Stub network with 6660 nodes (Medina et al., 2000)
domain 2 domain I domain 3 SKITTER outDegree a1998 1999 P(k)ak CA menara
2.2 P k k ( )
Third generation of Internet Topology Models 2000s Keywords: power-law degree distribution
Third generation of Internet Topology Models 2000s Keywords: power-law degree distribution
Several models o Barabasi-Albert model ● Price model ● Fitness model ● Inet There is a limitation of most ● BRITE proposed scale-free model ● GebA What is the limitation ??
Several Models Barabasi-Albert model Price model Fitness model Inet BRITE GeoBA ...... There is a limitation of most proposed scale-free model. What is the limitation???
More aspects for consideration in the case of the nternet Preferential attachment probability: nonlinear Growth: Accelerated growth Local events: Internal edges and rewiring, internal edges and edge removal Grow constraints: Aging and cost, gradual aging Competition in evolving networks: Fitness model, edge inheritance
More aspects for consideration in the case of the Internet • Preferential attachment probability: Nonlinear • Growth: Accelerated growth • Local events: Internal edges and rewiring, internal edges and edge removal • Grow constraints: Aging and cost, gradual aging • Competition in evolving networks: Fitness model, edge inheritance • ……