Delivers real-time updates regarding network changes, such as the creation or deletion of policies and links. It utilizes a standardized modeling language to inform subscribed users about topology shifts and path impacts, ensuring rapid response to events that may affect service delivery.
Crosswork Network Controller provides robust support for real-time notifications, helping operators monitor the network and respond quickly to events that may impact service.
The system uses the YANG Data Modeling Language (RFC 7950) to define notifications for a wide range of network changes, including the creation, update, or deletion of nodes, links, interfaces, and LSPs. These notifications are delivered via RESTCONF and enable users to stay informed about their network’s topology and policy state in near real-time.
Additionally, Crosswork Network Controller supports notifications for SR policies whose IGP paths are impacted by link down events. For example, when a network link goes down, the system identifies which SR policies use that link in their IGP paths and sends RESTCONF notifications to subscribed users with details about the affected link and policies. For existing policies, these notifications are sent right away; for newly configured policies, notification delivery may take up to 10 minutes.
For detailed instructions on subscribing to notifications, as well as examples of notification types and their JSON/YANG structures, see the Topology and Traffic Engineering Notifications page in the Crosswork Network Controller API documentation.