I have a few questions about this formula:
I don’t understand why do you have to multiply by 8 the sum (MSUS*6 + OCTSIF&SIO) since both terms are already given in octets? Also, would not be more correct to divide by 65536 (64k) instead of 64000? Another aspect is that the link also caries LSSU (Link Status Signal Unit). I have no idea about how many LSSU messages are transmitted and if their number can be safely ignored in link load calculation. Any idea? Thank you.