- Bronze, 100 points or more
hi every body!
I just want to know if following is correct method to find link utilization:
considering only transmission link i.e tx
link speed= 100 Mb
Number of bit traveling down the transmission line at certain time T1=10Mb
utilization= 10/100= 0.01 or 10 percent
so link utilization is 10 percent at T1
thanks a lot!
You can't send 10 Mbps down a 100 Mbps link (running at 100 Mbps). Bits are logically modulated at 100 Mbps. What happens is 90% of the time 10 Mbps isn't transmitted. However, physical link utilization would be 10%.
To further confuse, link utilization is often measured by bits contained within packets or frames. A link could be running at 100% physical utilization, but packet or frame bit counting would likely show less than 100%. For instance, on Ethernet, due to frame preambles and interframe gaps, you can't possibly transfer at 100%.
If you look at the show interface command cisco uses the metrics of a percentage of 255 for the link. If it says 65/255 then it is running approx. 25% of the link capacity.
1.It is correct..!!!!
2.Also you can use loading of the interface in "show interface " command.
3.Also see the input rate & output rate in "show interface " command
HTH..rate if helpful...