On Thu, Jan 12, 2012 at 10:43 AM, Manavendra Nath Manav <mnm.kernel@xxxxxxxxx> wrote: > On Wed, Jan 11, 2012 at 7:08 PM, Alexandru Juncu <alex.juncu@xxxxxxxxxx> wrote: >> On Wed, Jan 11, 2012 at 12:21 PM, Manavendra Nath Manav >> <mnm.kernel@xxxxxxxxx> wrote: >>> Hi All, >>> >>> I have a 100Mbps LAN with 10 connected terminals through a Switch. >>> Now, I understand 100Mbps is the max speed at which a terminal can >>> send/receive data. If every terminal sends data at this speed, then >>> does this speed distributes/divides according to load, or is it >>> dedicated for each terminal. How to measure it? >>> >>> -- >>> Manavendra Nath Manav >> >> It's rather a generic question... let me try to begin to answer it. >> First of all, the speed of the link is 100mbps wire speed. There is a >> lot of overhead caused by different protocols (I redirect you to learn >> about the OSI or TCP/IP stacks and about encapsulations). So the speed >> is way lower than 100 when doing anything over the network. >> >> Now, the question about if the speed is shared is hard to answer. The >> straight forward answer is no. Traffic would be shared if the network >> would be connected via a hub ( I doubt hubs are actually used in >> modern networks). Switches are 'smart' so they don't push traffic in >> parts of the network where is not needed, so, theoretically, the >> bandwidth is not share. >> >> However, most of the traffic we have in a network is not inside our >> Local Area Network, but with the Internet and all that traffic passes >> through the gateway. So the gateway would be the bottleneck and the >> traffic is 'distributed' among the hosts in the network. >> >> This is a very brief answer to what you said... maybe if you could >> provide some further details on what exactly you want to do, you will >> receive a better answer. >> >> >> -- >> Alexandru Juncu >> >> ROSEdu >> http://rosedu.org > > Hi Alexandru, > > Thanks for the detailed answer. In my 100Mbps LAN setup, I have > several clients/terminals connected to a server. The problem is that > the server is connected to the LAN via a GPRS module whose bandwidth > is very less (128kbps). So, different clients are parallely sending > data to server but most are getting timed-out because of bandwidth > constraints. My question is how I can verify that packets are being > dropped/timed-out because of bandwidth at the GPRS interface? Is there > any tool to do this? 'tc' comes to mind... _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
