Network resource requirements of traffic through a multiple stage switch network

A method for assessing traffic through a multiple stage switch network including a number of ingress switches, a number of middle switches and a number of egress switches, the traffic to be input on one or more input ports to a respective one or more ingress switches of the number of ingress switches, and output on one or more output ports from a respective one or more egress switches of the number of egress switches, the number of middle switches determining a capacity of the multiple stage switch network, the method comprising:

• receiving an indication of the traffic to be routed through the multiple stage switch network configured to route the traffic from the one or more input ports to the one or more output ports according to a type of the traffic;
• calculating a network resource requirement of the traffic based on the one or more input ports, the one or more output ports and the type of the traffic, the network resource requirement being calculated according to an algorithm specific to the type of the traffic, but generalized to any specific route of the traffic through the multiple stage switch network;
• assessing the traffic based on a comparison of the capacity of the multiple stage switch network, and the network resource requirement of the traffic;
• and in at least one instance in which the traffic so assessed exceeds the capacity of the multiple stage switch network based on the network resource requirement,
• modifying the ingress switches, the egress switches or the traffic through the multiple stage switch network, wherein calculating the network resource requirement includes calculating a resource requirement value according to the algorithm for each ingress switch of the respective one or more ingress switches, and each egress switch of the respective one or more egress switches,
• wherein calculating the resource requirement value for each ingress switch includes calculating a sum of traffic-type requirement values for one or more different types of the traffic input to the ingress switch, and
• wherein calculating the resource requirement value for each egress switch includes calculating a sum of traffic-type requirement values for one or more different types of the traffic output from the egress switch.

A computer-readable storage medium for assessing traffic through a multiple stage switch network including a number of ingress switches, a number of middle switches and a number of egress switches, the traffic to be input on one or more input ports to a respective one or more ingress switches of the number of ingress switches, and output on one or more output ports from a respective one or more egress switches of the number of egress switches, the number of middle switches determining a capacity of the multiple stage switch network, the computer-readable storage medium being non-transitory and having computer-readable program code portions stored therein that in response to execution by a processor, cause an apparatus to at least:

• receive an indication of the traffic to be routed through the multiple stage switch network configured to route the traffic from the one or more input ports to the one or more output ports according to a type of the traffic;
• calculate a network resource requirement of the traffic based on the one or more input ports, the one or more output ports and the type of the traffic, the network resource requirement being calculated according to an algorithm specific to the type of the traffic, but generalized to any specific route of the traffic through the multiple stage switch network;
• assess the traffic based on a comparison of the capacity of the multiple stage switch network, and the network resource requirement of the traffic;
• and in at least one instance in which the traffic so assessed exceeds the capacity of the multiple stage switch network based on the network resource requirement,
• modify the ingress switches, the egress switches or the traffic through the multiple stage switch network, wherein the apparatus being caused to calculate the network resource requirement includes being caused to calculate a resource requirement value according to the algorithm for each ingress switch of the respective one or more ingress switches, and each egress switch of the respective one or more egress switches,
• wherein the apparatus being caused to calculate the resource requirement value for each ingress switch includes being caused to calculate a sum of traffic-type requirement values for one or more different types of the traffic input to the ingress switch, and
• wherein the apparatus being caused to calculate the resource requirement value for each egress switch includes being caused to calculate a sum of traffic-type requirement values for one or more different types of the traffic output from the egress switch.