Cisco ASR5500 System Software Release 21.3 | ATT Only, DPC/DPC2 — ASR55-12-R213-K9=

Keep ASR5500 infrastructure on the required software baseline with Release 21.3 for DPC/DPC2 environments. This Cisco software package is intended for ATT-only deployments, helping teams maintain alignment with the platform version expected for service continuity, operational control, and support qualification. For network teams managing subscriber-facing services, software version discipline matters. Release-specific licensing and entitlement help ensure the ASR5500 stays on the approved path for deployment and maintenance, reducing ambiguity during upgrades, replacements, and lifecycle planning. It is designed for organizations that need a precise software match rather than a generic entitlement. This package is suited to environments where consistency across DPC and DPC2 modules is essential and where procurement must map directly to a defined carrier requirement. By tying the software to a specific release and deployment scope, it supports cleaner change management and more predictable platform governance. Ideal For Carrier network teams maintaining ASR5500 platforms on a defined software release ATT-only environments requiring a specific DPC/DPC2 software entitlement Procurement workflows that must match software licensing to a known platform baseline Lifecycle refresh plans that depend on release-specific software control Why This Product 1 Tied to a specific ASR5500 release rather than a generic software entitlement 2 Defined for DPC/DPC2 environments to match platform requirements 3 Restricted to ATT-only deployments for precise procurement control 4 Supports version discipline in carrier operations