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 05-22-2012, 02:56 PM #1 netuser LQ Newbie   Registered: Apr 2012 Posts: 8 Rep: adhoc hierarchical networks Hi, i am a beginner in networking area. during the study of adhoc networks, i have a question. if i have a 2 level hierarchical network, with N nodes where N is a large no. and x regions or groups, then what should be the best value for x. Should it be large or small. Also, if the nodes are large in number, is 2 level hierarchy beneficial? Any help is appreciated
 05-23-2012, 02:56 AM #2 nikmit Member   Registered: May 2011 Location: Nottingham, UK Distribution: Debian Posts: 178 Rep: Yes you need the hierarchy, or layers as cisco calls them. With large numbers of nodes you need an access layer and then separate or collapsed core and distribution layers. I try to keep subnets/vlans to a /24 size or smaller but thats just empirical rather than theory backed
 05-23-2012, 06:05 PM #3 netuser LQ Newbie   Registered: Apr 2012 Posts: 8 Original Poster Rep: hi, i mean that if i have an adhoc network which has 2 level hierarchy, which means that there would be N nodes divided into x groups or regions. the complexity in this case would be x.O(N/x). If N is a very large number, then keeping x a constant would not improve the asymptotic notation, so i think that x should be a function of N, for example x=N/constant. Is this the best we can do, or we can have x that can further improve the asymptotic notation? that is why i asked the best value of x. Another question i have is that if we consider the hierarchy 2-level as a function of x and N is it beneficial or having a greater hierarchy (3,4,5-level) is better?

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