problem 2

2. A network gateway receives packets at 375 packets per second (pps). The mean response time for each packet is 1ms. a) What it the gateway's utilization? b) What is the mean number of packets in the gateway? o) Watisthe wveran time a packet peni giteway? d) If the network wants to ensure the average time in the gateway is less than 100 us (microseconds), what should be the response time of the gateway? e) How large should a buffer be to ensure that the probability of it overflowing is les than 0.01%? 3. Network A is a TDM network with m users that can transmits upps. Each user sends packets at a rate of i/m pps and each user's time slot is /m pps. Network B is a statistical multiplexed network with m users where each user shares the upps network and sends packets at a rate of 2/m pps. Assuming both networks can be modeled as a M/M/1 queue, what is the average expected queueing delay for both networks? Which is better? 4. What's the ASN for WSU? University of Idaho? What IP space is associated with these 5. Consider the SDN OpenFlow network shown below and specify the flow table entries in s2 that implement this forwarding behavior. The desired forwarding behavior for datagrams arriving at s2 is as follows: Any datagrams arriving on input port 1 from host h5 or h6 that are destined to hos h1 or h2 should be forwarded over output port 2 Any datagrams arriving on input port 2 from host h1 or h2 that are destined to h5 h6 should be forwarded over output port 1