On Tue, Aug 7, 2012 at 11:15 AM, Noel Chiappa <[email protected]>wrote:
> > From: "Y. Richard Yang" <[email protected]> > > > Glad that you also like the idea of different levels of details of > the > > network topology. If the ALTO Server is given a detailed topology > > ... we can offer multiple topology operators/aggregators to explore > the > > detailed topology, according to need and policy. > > Too bad we have a routing architecture that deals (as its fundamental > currency) in destination tables, rather than topology - and, in particular, > in a multi-level representation of the toplogy. Then all this stuff would > just fall out naturally. > > It appears to have increasing efforts focusing on building abstractions/network computations based on topology. Hope that it moves somewhere. We are finding more benefits of using topology-based network routing/control, e.g., McNettle (Multi-core Nettle), an SDN controlled being developed here, uses STM to manage topology in a highly concurrent controller and achieves pretty good scalability. > (And if I sound somewhat cranky, perhaps people will forgive me - although > I > expect not that many on this list will know what I'm implicitly referring > to.) > > > > There are studies on representation of multi-level graphs that we can > > try to take advantage of. This can be a subject for the group to > explore. > > There's a PhD thesis which is relevant to this area (since part of it is > about clustering, i.e. in representing an area of the graph without full > detail, one has to decide where to set the boundaries of said part): > > Jacob Hagouel, "Issues in Routing for Large and Dynamic Netoworks", > Columbia University, 1983 > > A lot of it is irrelevant (to me, at least), since it's talking about > distributed path computation (which I have long since concluded is 'buggy > whip' technology), but the clustering, etc, content is good. > Thanks a lot for the pointer. Definitely will read. Richard > > Noel >
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