I'm having to rebuild the network for my company. There are about 80 ports and 65 of them are computers. We have only a 1.5 Mb T-1 for internet access and it is saturated most of the time. We are unable to affordably increase our internet speed. To help fix the problem I'm wanting to get rid of our old switches (no control) and replace them with 2 (two) 48 port switches that will allow me to shape and limit bandwidth. It seems that the 2950 and 2960's are both good for QoS settings. However, money is tight and approving two $1500 switches may be difficult. I don't understand the differences in QoS control between these two switches. Which one is better to get? Or is something else recommended (one requirement that led me to the Cisco switches is quality and reliability -- I don't want to have to recycle power to whatever we put in to keep them running).
The link below shows that shaping (vs policing) traffic creates smoother bandwidth control. Are both boxes fully capable of this and is there any downside to this queing method? Is the disadvantage listed (Can introduce delay due to queuing, particularly deep queues.) significant?
Do both of these switches have the ability to allow users to use free bandwidth while guaranteeing a minimum during periods of heavy load?