I can't find those functions on my calculator... DAMN, I'm getting behind
already!!!
I'm looking at this and I'm thinking that some of your answers will vary
with the type of equipment you have? Am I wrong in thinking this. Also there
is a certain amount of variables "assumed" here. I can tell you this,
without having to do all the math. The higher the utilization the more
traffic generated thus causing more collisions and higher latency. The
implications of higher utilization is that your network will bog down and
physically, as well as virtually, suck! There's my 2 cents... LOL
""Steiven Poh (Jaring)"" <[EMAIL PROTECTED]> wrote in message
007801c0b947$a1137f40$[EMAIL PROTECTED]">news:007801c0b947$a1137f40$[EMAIL PROTECTED]...
> The simulation code you are given treats the Ethernet as a star =
> topology LAN with a central repeater and a line to each node. All =
> traffic appears on every line. The simulation assumes that the longest =
> distance from one station to another across an ethernet is 400m, and the =
> signal travels at 80% of the speed of light, which is 300 million metres =
> per second. Determine D for this network (D is the propagation delay =
> across the network).=20
> Conduct simulations of this network at 10%, 40%, 80%, 95% and 120% =
> nominal utilization. Utilization is the proportion of the time that the =
> ethernet is carrying successful packets. The nominal utilization is the =
> utilization which would be achieved if all packets were successfully =
> carried. For example, 40% nominal utilisation will be achieved when =
> packets arrive at the rate 0.4 * 10,000,000 / (250*8) =3D 2000 packets =
> per second. Some of these factors mean that the actual proportion of =
> time during which the network is busy could be greater or less than 40%. =
>
> In each of these simulations, you should measureor investigate:=20
>
>
> a.. the effective utilization rate (only count bits successfully =
> sent),=20
> b.. the rate at which packets are rejected by the ethernet access =
> layer (also known as the packet loss rate),=20
> c.. packet throughput (ie. 1 - the loss rate),=20
> d.. collision rate (collisions per packet),=20
> e.. average number of packets involved in a collision,=20
> f.. the average number of collisions experienced by a packet given =
> that it experiences one collision, and=20
> g.. the average delay experienced by a packet.=20
> In addition, repeat the simulations at 40% and 80% for a network with =
> 100 times the propagation delay, as might be experienced if the network =
> was extended over too wide a physical distance.=20
>
> Note that the package length in the program is in bytes, and some =
> figures may not be explicitly designed in the program, it requires you =
> to investigate from the program execution statistics.=20
>
> Submission Requirements=20
>
> The submission should be in the form of essay. In the essay, you should=20
>
> 1. determine the number of bits which can be transmitted in the time D, =
> given that the transmission rate of the network is 10 Mbit/s, the =
> average packet length is 250 bytes, and the nominal utilization level of =
> the network is 80%.=20
>
> 2. tabulate or plot these resultsfor the network of LAN at different =
> nominal utilization. Also, you should comment on the significance of the =
> results for the successful management of an ethernet LAN.=20
>
> 3. tabulate or plot the results for the network (ie, 100 times the =
> propagation delays) but only at 40% and 80% of the nominal utilization. =
> You shall comment on the implication of these experiments
>
>
> _________________________________
> FAQ, list archives, and subscription info:
http://www.groupstudy.com/list/cisco.html
> Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
>
_________________________________
FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
