DETECTION OF ROOT AND VICTIM NETWORK CONGESTION

摘要

A method in a communication network includes defining a root congestion condition for a network switch if the switch creates congestion in the network while switches downstream are congestion free, and a victim congestion condition if the switch creates the congestion as a result of one or more other congested switches downstream. A buffer fill level in a first switch, created by network traffic, is monitored. A binary notification is received from a second switch, which is connected to the first switch. A decision whether the first switch or the second switch is in a root or a victim congestion condition is made, based on both the buffer fill level and the binary notification. A network congestion control procedure is applied based on the decided congestion condition.

主权项

1. A method in a communication network, comprising:
defining a root congestion condition for a network switch if the switch creates congestion in the network while switches downstream are congestion free, and a victim congestion condition if the switch creates the congestion as a result of one or more other congested switches downstream. monitoring in a first switch a buffer fill level created by network traffic; receiving from a second switch, which is connected to the first switch, a binary notification; deciding whether the first switch or the second switch is in a root or a victim congestion condition based on both the buffer fill level and the binary notification; and applying a network congestion control procedure based on the decided congestion condition.