Cat4500e-universalk9.spa.03.11.04.e.152-7.e4.bin

Supports Security Group Tagging (SGT) and Security Group Access Control Lists (SGACLs), allowing micro-segmentation of user traffic independent of IP subnetting or VLAN architecture.

: Ensures hitless failover between redundant supervisor engines. Data plane forwarding continues uninterrupted during a control plane crash.

This software image is engineered for modular Cisco Catalyst 4500E chassis (such as the 4503-E, 4506-E, 4507R+E, and 4510R+E) paired with specific Supervisor Engines. Compatible Supervisor Engines cat4500e-universalk9.spa.03.11.04.e.152-7.e4.bin

: Support for Virtual Switching System (VSS), which allows two physical switches to operate as a single logical entity.

The cat4500e-universalk9.spa.03.11.04.e.152-7.e4.bin image represents a mature, hardened milestone in the evolution of the Cisco Catalyst 4500-E campus platform. By bundling robust Layer 2/3 switching capabilities, high-availability architecture like VSS and NSF/SSO, and modern cryptographic protections under a single, digitally signed universal binary, it ensures legacy enterprise networks continue to operate with optimal efficiency and defense-in-depth security. Supports Security Group Tagging (SGT) and Security Group

cat4500e-universalk9.spa.03.11.04.e.152-7.e4.bin is a stable, security-capable IOS image for the Catalyst 4500-E series, ideal for campus distribution or collapsed core roles. Its universal license model and extended maintenance track make it a practical choice for environments requiring long-term reliability. However, always verify hardware compatibility, memory, and security bulletins before deployment. For new designs, consider Cisco’s modern IOS XE platforms—but for existing 4500-E gear, this image represents a solid, battle-tested release.

| Component | Meaning | Implication for Your Network | | :--- | :--- | :--- | | | Platform: Catalyst 4500E Series (Supervisor 6-E, 7-E, 8-E) | Not for 4500 legacy or 4500X. Verify your Sup engine. | | universalk9 | Image Type: Universal with K9 (Cryptographic) | Supports both IP Base and IP Services via license. Includes strong crypto (SSH, VPN). | | spa | Shared Port Adapter support | Required for 10 Gigabit interfaces and SFP+ modules. | | 03.11.04.e | Internal Build Label | Denotes a specific engineering release fork. | | 152-7.e4 | IOS Version in Alternate Notation | Translates to 15.2(7)E4 – the standard version identifier. | | .bin | Binary executable | The bootable operating system file. | This software image is engineered for modular Cisco

This is the primary version number. The 03.11.04.E indicates it is part of the Cisco IOS XE Release 3.11.xE train. The E signifies this is an extended maintenance (EM) release intended for enterprise features. The specific 04 number indicates this is a maintenance build.

Ensure your Supervisor Engine has sufficient memory (DRAM) to load this image. The Universalk9 image can be quite large. C. VSS Considerations

To proceed with your network maintenance, please let me know: