Abstract: Some embodiments of the invention provide a method of sending data messages from an edge router at a first location of an enterprise network to a SaaS (software as a service) application server provided by a third-party at a second location. The method receives, from a DNS (domain name system) first server, a resolution for a particular destination network address for the SaaS application server at the second location. From a second server, the method obtains an identifier for a first cloud gateway from multiple cloud gateways at multiple locations through which the particular destination address for the SaaS application server can be reached, the first cloud gateway farther from the first location than a second cloud gateway in the multiple cloud gateways but closer to the second location than the second cloud gateway. The method uses an optimized SD-WAN connection to the first cloud gateway to forward data messages for the first cloud gateway to the SaaS application at the second location.

Abstract: Some embodiments of the invention provide a method of routing data message traffic from an edge router at a first location and a SaaS (software as a service) application server provided by a third-party at a second location. The method queries a (global server load balancing) GSLB-aware DNS (domain name system) server for a cloud gateway from multiple cloud gateways at multiple locations through which a particular destination network address for the SaaS application server can be reached. The method receives from the GSLB-aware DNS server an identifier for a first cloud gateway that is farther from the first location than a second cloud gateway in the multiple cloud gateways but closer to the second location than the second cloud gateway. The method uses an optimized SD-WAN (software-defined wide-area network) connection to the first cloud gateway to forward data messages for the first cloud gateway to the SaaS application at the second location.

Abstract: Examples disclosed herein relate to management of default route advertisement by an Area Border Router in an OSPF network. In an example, an ABR in an OSPF network may determine whether a pre-condition for the ABR to advertise a default route to a stub area is met. In response to a determination that the pre-condition for the ABR to advertise the default route to the stub area is met, the ABR may advertise the default route to an adjacent router in the stub area.

Abstract: Examples disclosed herein relate to management of default route advertisement by an Area Border Router in an OSPF network. In an example, an ABR in an OSPF network may determine whether a pre-condition for the ABR to advertise a default route to a stub area is met. In response to a determination that the pre-condition for the ABR to advertise the default route to the stub area is met, the ABR may advertise the default route to an adjacent router in the stub area.