Posted on 2014-08-02
Although computer networks and network devices are very intelligent and efficient, networks and network devices sometimes fail to provide 100% efficiency. The broadcast storm is one of the major deficiencies in computer network systems.
I aam trying to understnd the principle of a broadcast storm. I fond this piece in technophobia which is of interest to me because it might lead me to understanding a similar problem. However I dont seem to be able to follow the logic
"For example, let's suppose there is a small LAN network consisting of three switches (Switch A, Switch B and Switch C), and three network segments (Segment A, Segment B and Segment C). Two nodes are attached within this network. Node A is attached to Segment B, while Node B is directly attached to Switch A. Now, if Node B wants to transmit a data packet to Node A, then traffic will be broadcast from Switch A over to Segment C; if this fails, then Switch A will also broadcast traffic over Segment A. Because Node A neither attaches to Segment C, nor Segment A, these switches would further create a flood to Segment B. If neither device/switch has learned the Node A address, then traffic will be sent back to Switch A. Hence, all devices/switches will keep sending and resending the traffic, eventually resulting in a flood loop or broadcast loop. The final result is that the network will melt down, causing failure in all network links, which is referred to as a broadcast storm."
I should be grateful if someone could explain it to me with a diagram or sketch so i can better understand it .Also if anyone would like to share any thoughts on this type of problem i would appreciate it.