>If this system analyst was *good*, there would not be any need to ask. 
 
 
I am sorry but the question was sent to this list, and that good system 
analyst answer to me from here.
 
 
I did not mean *good*, but the guy give me some attention and complete 
answers and dont ask to me to read any BASIC book. 
 
 
>> Nobody knows how the algorithm implemented by CISCO or Extreme or Juniper 
 
>> works !!! 
 
 
The CISCO CCNA material is very ... very good but it does not explain how 
the router match ip on router table.
 
 
 
>If you want to see source code, look into the Linux or BSD kernel 
 
>networking code. The basic stuff ("lookup of IP routes and masks") 
 
>has to follow the same rules everywhere. 
 
 
Now this is a good answer. I thank you.
 
 
I dont have much many experience with how hardware works inside and for this 
I am asking for help on this list
 
 
I know the competence and experience of your stuff. 
 
 
>Vendors have their optimizations, of course, making this lookup faster, 
 
>adding caching, or implementing it in specialized hardware. But the 
 
>basic principle is usually similar. 
 
 
Thank you again
 
 
And sorry about *good*, I didnt want to bore nobody
 
 
I hope that I could still use the services of your big knowledge. It will be 
very important for me
 
 
Giuliano
 
 
 
 
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