Cisco IOS v.15.4(1)SY Advanced IP Services NPE | Catalyst 6500 — S2TAIK9N-15201SY

Keep Catalyst 6500 infrastructure aligned with the software foundation it was built for. Cisco IOS v.15.4(1)SY Advanced IP Services NPE is designed for Catalyst 6500 Series Supervisor Engine 2T and 6500 Series Supervisor Engine 2T XL environments, delivering the advanced IP services expected in enterprise switching cores. It is a license-based software offering tied to Cisco Systems, Inc. and identified by MPN S2TAIK9N-15201SY. This release is intended for teams that need dependable platform-specific software support rather than generic network code. By matching the supervisor engine and IOS train, it helps preserve operational consistency across routing, switching, and service features already standardized in the environment. That matters when the network is carrying business-critical traffic and change windows are limited. For organizations maintaining installed Catalyst 6500 assets, this software licensing option provides a direct path to keep the platform in service with the correct IOS feature set. It is a practical choice when the value is in extending the life of proven infrastructure, protecting prior investment, and avoiding unnecessary platform churn. Ideal For Refreshing software entitlements on installed Catalyst 6500 core switches Maintaining advanced IP services on Supervisor Engine 2T deployments Standardizing IOS licensing across legacy enterprise switching environments Extending the service life of existing Cisco campus and core infrastructure Why This Product 1 Built for Catalyst 6500 Supervisor Engine 2T platforms, not generic network software 2 Matches the Advanced IP Services feature set required in established Cisco cores 3 Supports installed infrastructure where software continuity matters more than platform change 4 License entitlement is tied to a specific Cisco hardware family and IOS train