Provide the chassis software package associated with Cisco NCS 55A2 routing systems. NCS55A2-SW-BNDL identifies a Cisco NCS 55A2 chassis software bundle for Network Convergence System deployments. It addresses the software component of the chassis platform rather than adding a physical network interface, optic, or external appliance. The bundle designation makes the chassis association explicit for environments standardizing on the NCS 55A2 platform. Use this bundle where an NCS 55A2 chassis requires its associated platform software package. It belongs with the routing chassis layer of a carrier network design, where the chassis supplies the hardware foundation and software establishes the platform operating environment. Interface count, optical media, routing capacity, power requirement, and physical chassis dimensions are characteristics of the chassis and installed hardware, not of this software-bundle designation. Treat the code as chassis-specific software, not as a substitute for an NCS 55A2 chassis or a hardware expansion component. That distinction matters in a router configuration: the bundle is associated with the named chassis platform, while port density, installed modules, management connections, and site power planning depend on the hardware selected for that platform. Keep the chassis software bundle aligned with the NCS 55A2 system configuration when defining the platform software component.