hi Sebastian ： - firstly, i agree that the creation of the map, which is tightly related to the algorithm, is within the protocol. - secondly, i am not sure the information contained in current map structure is complete or not, because the current protocol describe that :
1. the cost map just includes cost type and cost mode 2. the network map just includes PID and endpoint address does the information include the cell id or ap id? On Thu, Apr 28, 2011 at 6:40 PM, Sebastian Kiesel <[email protected]>wrote: > On Thu, Apr 28, 2011 at 09:27:51AM +0800, ?????? wrote: > > > I agree. But the creation of maps based on the (wireless) topology and > > > other {cost,distance,performance,...}-related information as well as > > > feeding them into the ALTO server is out of scope of the protocol spec. > > > > > why does the creation of this map is out of the scope of the protocol > spec? > > Which information to put into the map depends on the network technology, > topology, optimization goals, policies (e.g. how much information about > the network is an ISP willing to disclose), how much effort you want to > spend, etc. So it would be difficult to write down an one-size-fits-all > algorithm. Furhermore, the algorithms used for creating the maps may be > a field where different ALTO server vendors may come up with different > solutions, i.e., market competition. > > For interoperability between ALTO clients and servers of different > vendors it is important that the syntax of the map and the request/reply > protocol is clearly specified. This is within the scope of the document. > > > the ALTO server should provider the information to client to make sure > that > > P2P application make the appropriated selection for the wireless peer. > > I agree. > > In your wireless scenario, is there any kind of guiding information > you would like to transport from the ALTO server to the ALTO client, > which cannot be expressed with the syntax in the current protocol > specification? > > > Thanks, > S. > -- Best wishes, Beijing University of Posts & Telecommunications (BUPT) Zhu Xiao ( 朱潇 ) E-mail: [email protected] mobile:+86 134-8881-9004
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