Ismail Al-Shelh wrote: > > Greeting, > > in one of groups.google threads I noticed this equation > > Util 10 MB Ethernet = ((InOctets/sec + > OutOctets/sec)*8)/10000000 > > I am wondering where can I find a document which can explain > how to > calculate the utilized bandwidth. still I do not know why he is > multiplying > by 8 and then dividing by 10,000,000 !
Multiply by 8 to get bits per second instead of bytes per second. Divide by 10 Mbps (10,000,000 bits per second) to understand what fraction of the Ethernet capacity is being used for bits in and out of this interface. Utilization is almost always specified as a fraction of capacity. (It's usally a percentage, so you could multiply by 100 to get a percentage.) I think you are confused by the 10,000,000 because it really should be 10,000,000 bits per second. (He forgot the per second?) If it's a shared Ethernet, this would only be from the point of view of this one interface, which wouldn't be the whole story. Other interfaces could be using some of the bandwidth too. If it's a switched full-duplex link, then this would be a good measurement of the utilization of the Ethernet capacity available to this interface. Priscilla > > advise please. > > > to refer to the original thread you can go to > http://groups.google.com/groups?hl=en > C%40aranea.nl&rnum=8&prev=/groups%3Fhl%3Den%26lr%3D%26ie%3DISO-8859-1%26q%3D > calculate%2Bbandwidth%2B10%2Bmbps%2B> > &lr=&ie=UTF-8&threadm=339089D4.570EBB5C%40aranea.nl&rnum=8&prev=/groups%3Fhl > %3Den%26lr%3D%26ie%3DISO-8859-1%26q%3Dcalculate%2Bbandwidth%2B10%2Bmbps%2B > > > > Ismail > > Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=72956&t=72888 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
