2. On a network router, measurements show that a. b. packets arrive at a mean rate of 125 packets per second (pps) and the router takes about 2 milliseconds to forward them. l 25/ Assuming an M/M/1 model, What is the probability of buffer overflow if the router had only 13 buffers? 3.7314 times every billion packets How many buffers are needed to keep packet loss below one packet per million