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Monitoring the Topology of Network Elements Managed by CSD-Topology Overview


Connectivity Services Director enables you to monitor the network elements, such as devices and links, that are configured, administered, and maintained using CSD-Topology. The CSD-Topology enables granular configuration and control of IP and MPLS flows in large service provider and enterprise networks. By establishing a connection between the CSD-Topology, which is a topology server from the perspective of Connectivity Services Director, and the server on which Connectivity Services Director is running, a topological network view or map is presented that enables you to visualize label-switched paths (LSPs), links, and services for monitoring and debugging network faults and traffic outages in IP and MPLS networks. Fault, configuration, accounting, performance, and security (FCAPS) is an explicit model that is used to achieve the operational objectives of network management. Connectivity Services Director offers an effective management system for a complete FCAPS functionality.

To compute optimal paths through the network, the CSD-Topology requires a consolidated view of the network topology. The Topology View of the network includes the nodes, links, and their attributes (metric, link utilization bandwidth, and so forth) that form the network topology. Therefore, any router CLI configuration changes to interior gateway protocol (IGP) metric, Resource Reservation Protocol (RSVP) bandwidth, Priority/Hold values, and so forth are instantly available from the Topology View of Connectivity Services Director.

Without the need to traverse to the CSD-Topology GUI, you can use the Topology View from within the Connectivity Services Director GUI to obtain a global and expansive view of the network state for monitoring, management, and proactive planning. In the CSD-Topology, a Path Computation Client (PCC) is a client application that requests the Path Computation Element (PCE) to perform path computations for the PCC’s external label-switched paths (LSPs). The Path Computation Element Protocol (PCEP) enables communication between a PCC and the CSD-Topology to learn about the network and LSP path state and communicate with the PCCs. By providing a view of the global network state and bandwidth demand in the network, the CSD-Topology is able to compute optimal paths and provide the attributes that the PCC uses to resignal the LSPs.

You can also sort and classify the devices, LSPs, or services of interest and applicability for your network environment to diagnose the traffic-handling capacity, performance, and operating efficiency of the paths through which packets traverse through the circuit managed by the CSD-Topology.

You can also view the optical links configured on the optical interfaces of devices, such as PTX Series routers, on the topology map. You can sort and filter the optical links to be displayed on the topology map for easier and optimal monitoring. Only PTX3000 routers are currently supported for display on the topology map, which can contain integrated photonic line cards (IPLCs) that work in conjunction with optical inline amplifiers (optical ILAs).