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Posted by Trendkill on June 12, 2008, 7:41 am
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> > Hi, how do you calculate the interface utilization -
> > e.g. reliability 255/255, txload 100/255, rxload 122/255 - do you
> > total the 100 (txload) and 122(rxload), get 222 and say the
> > utilization on the interface is (222/255) 88%
>
> No, the transmit and receive are mutually exclusive. tx is transmit,
> rx is receive, and therefore you treat them differently. I suppose
> you could aggregate them and then take it over 510, but I can't think
> of any real reason to look at it that way. Additionally, the tx/rx
> are averaged over a set amount of time if I recall correctly, like 5
> minutes, but its using some specific calculation. Since bandwidth on
> circuits is full duplex (1.5 meg transmit AND 1.5 meg receive on a T1
> for example), you do not aggregate tx and rx.
>
> http://www.staticnat.com/WP/2007/03/07/reliability-255255-txload-1255...
>
> http://www.cisco.com/en/US/docs/ios/12_3t/inter/command/reference/int...
So using your numbers, transmit is 100/255 or 39.2% utilized, and
receive is 122/255 or 47.8% utilization.
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