We have a 100 Mbps Leased Line between two Cisco 7301 routers. The load on the line during the normal office hours is around 40 % but at the start of the day the load of the line climbs to a peak that sometimes goes up to 100 %, mostly it doesn't get any higher then 90 %. All traffic on the line is data ( no Voice or Video ) and the applications are non-interactive like Lotus notes mail and other database applications. Now the customer is saying that loads above 60 % are unacceptable for them, I really think it would be a waste of money to use no more then60 % of the available bandwidth. I agree that having 100 % load is not good and was thinking on implementing RED on the routers to avoid this, but what I really need is a document that handles this topic and shows that the 60 % load is really unrealistic. Any documents with 'rules of thumb' or best practice are more then welcome, I would also like to hear your personal opinion on this.
Thanks for your feedback