Abstract: Cost aware routing in a network topology to reduce costs within an egress-based pricing model. A method includes receiving telemetry data from one or more of a network device or a compute device within a cloud computing network, wherein the telemetry data is associated with a customer of the cloud computing network. The method includes retrieving an egress-based pricing scheme associated with a provider of the cloud computing network and provisioning one or more of the network device or the compute device to optimize routing decisions for the customer to reduce a predicted data egress charge for the customer.

Abstract: Cost aware routing in a network topology to reduce costs within an egress-based pricing model. A method includes receiving telemetry data from one or more of a network device or a compute device within a cloud computing network, wherein the telemetry data is associated with a customer of the cloud computing network. The method includes retrieving an egress-based pricing scheme associated with a provider of the cloud computing network and provisioning one or more of the network device or the compute device to optimize routing decisions for the customer to reduce a predicted data egress charge for the customer. A route may be selected to traverse multiple clouds and/or colocation providers according to ingress, egress, and transfer charges. Segment routing and VRFs may be used to implement routes selected based on criteria such as cost, latency, throughput, and jitter.

Abstract: A method and mechanism for determining when to transmit a probe packet to detect increases in path maximum transmission unit (PMTU) in a network having a host and a target interconnected by the network. Calculate a utility variable corresponding to a number of packets to be transmitted from the host to the target which are greater than a predetermined amount of a known PMTU for the target. When the utility variable is greater than a predetermined utility threshold, sending instructions to the host to send a probe packet to detect increases in PMTU for the target. Storing the previous state of the internet path with respect to PMTU in a variable PPMTU and tracking it during decreases so that a restoration of the PMTU can be verified by sending probes. PMTU is treated as a resource which is either fully or partially used by an application.

Abstract: Various embodiments of the invention relate to methods and systems for managing Denial of Service (DoS) attacks in a network. In various embodiments of the invention, the system identifies logical communication states that are under a DoS attack. The identification is based on the number of communications in the logical communication states. The number of communications is compared to a first set of threshold values. Further, one or more suspected attackers are detected in the logical communication states that are identified as being under the DoS attack. In accordance with various embodiments of the invention, countermeasures are initiated against the DoS attack from one or more suspected attackers, when the number of communications in the logical communication states is more than a second set of threshold values.