Re: [ns] Info about Classifier Architecture

[Sunil Gowda <sgowda1@eecs.wsu.edu>]

Hi everyone,

I am implementing an algorithm where i need to 'reserve' the link for some
time in the future. So i need to maintain a data structure for each link. The
ideal place would have been at the Link, but there is no single object as
such in a
link. Also a link is mostly implemented in tcl which I am  not very
comfortable programming.
So  i decided to place an array of the data structure at the classifier, one
for each link.
Now, how do i index the array. Does  each link have an id ? If so, how to
access it?

Also, can i obtain the address of the node of which a classifier is part of?
In other words how to obtain the address of a clessifier?


Thanks in advance
Sunil







"V.R.Sundar" wrote:

> Hi,
>
> On Thu, 5 Jul 2001, Sunil Gowda wrote:
>
> > Hi,
> >     Can anyone please let me know when and how the "slot_" array in the
> > address classifier is initialized?
>
> Here is what i understand so far ( somebody correct me if i am wrong). the
> slot_ array is indexed by the dest addr and points to the object this
> classifier should hand the packet to for the given dest address. To do
> this the method install is called which in turn allocs slot_ if needed. To
> give an idea of how it works ( with static routing and flat-heirarchy):
>
> (1) simulator::run(tcl code) calls..
> (2) routelogic::configure(tcl) calls..
> (3) agent/rtproto/static::init-all (tcl)
> (4) simulator::compute-routes(tcl)
> (5) simulator::compute-flat-routes(tcl) which does:
> (5-a) routelogic::compute ( this i think is C code ) - maps to
> compute-routes in c code.Finds the next hop for all dests.
> (5-b) simulator::populate-flat-.. (c code i think, again without the
> cmd.).For each dest uses the nexthop previously found to find the link to
> use. Calls
> (6) node::add_route which calls
> (7) routingmodule::add_route for every routing module installed in the
> linked list each of which installs the dst/link-object in its own
> classifier.
>
> sundar
>
> --
> V.R.Sundar
> Ph: 323-734-1920

--
Sunil Gowda
School of EECS
Washington State University
Ph: 509-335-5934 Fax:413-723-0160