Can heavy UDP traffic create network congestion?

I have three IP addresses using the same gateway. Two of them are configured as a cluster with multicast address setup. If there is a heavy UDP traffic between those two, can that affect the network on the third IP address ?

Answer

Could the network be configured so this is not a problem? Yes.

Could the network be configured so this is a problem? Yes, but unlikely.

The simplest configuration (everything plugged in to a simple Ethernet switch) would likely not be overwhelmed by the cluster’s UDP traffic because of the congestion control properties of IP.

Attribution
Source : Link , Question Author : CBR , Answer Author : longneck

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