LARTC - Jan 2005 - How to manage relatively internet bandwidth while don''t know specific input internet bandwidth ?

Hello,
 
My organization has a LAN network and the LAN is connected to internet by a
Cisco router.
 
internet -------| Cisco router |------ LAN
 
(The cisco router can not be replaced by a linux router, I think, because the
LAN has more
 
than 1000 computers.)
 
LAN network is divided into some sub networks. I have to relatively manage
internet
 
bandwidth (between applications and between computers ) at these sub-networks
using linux
 
router .
 
               internet
                  |            ------------> bandwidth here is known.
            cisco router
             /      |      \  ....
         ............................
           /        |        \  ----------------> I don''t know
internet bandwidth of each sub network
         linux   linux    ......
        router  router    
         /         |        
       sub      sub         .....   network    network   .....

 
My problem is  I don''t know the internet bandwidth of each sub network.
 
Can you give me some suggestion about schemes I can use in  a linux router 
(what qdisc, ... ).
 
Thank in advance,
 
nhgiang  


		
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