Performance evaluation of a lightweight logical link control protocol in slotted ring networks
Koji Hirabayashi, Yutaka Ishibashi, Shuji Tasaka · Electronics and Communications in Japan (Part I Communications) · 1995
Abstract This paper evaluates the performance of a fast select connection oriented (FS‐CO) logical link control (LLC) protocol in slotted ring networks. the FS‐CO‐LLC protocol is one of the light‐weight protocols. It employs a method of implicit connection establishment and release to reduce overhead of connection control. l'his paper analyzes the performance (throughput and average response time) of a slotted ring network in which a single slot circulates by means of Equilibrium Point Analysis. the performance in the case of plural slots is evaluated by simulation. This paper also compares the FS‐CO‐LLC protocol with connection‐oriented (CO) and connection‐less (CL) LLC protocols. Numerical results show that the performance of FS‐CO‐LLC and CL‐LLC protocols is superior to that of CO‐LLC protocol when the average message length is smaller than the buffer size. On the other hand, when the average message length is larger than the buffer size, CO‐LLC protocol has the best performance. It is also shown that the per formance of FS‐CO‐LLC protocol does not‐degrade but CL‐LLC protocol does, even if the average message length becomes larger.