Cat4500es8-universalk9.spa.03.11.05.e.152-7.e5.bin __hot__ May 2026

: Denotes a universal image that includes "k9" (strong encryption) features, typically managed via software licenses. spa : Indicates a digitally signed Cisco production image.

: Catalyst 4503-E, 4506-E, 4507R+E, 4510R+E, and 4507R-E/4510R-E (with revision 2.0+). cat4500es8-universalk9.spa.03.11.05.e.152-7.e5.bin

: Represents the Cisco IOS XE release version (3.11.5E). : Denotes a universal image that includes "k9"

Understanding the naming convention of this file helps clarify its compatibility and features: : Represents the Cisco IOS XE release version (3

This image is strictly for the Supervisor Engine 8-E (WS-X45-SUP8-E). Note that for redundant configurations in a chassis, the chassis must be at hardware revision 2.0 or higher to support this engine.

: Supports Stateful Switchover (SSO) and Nonstop Forwarding (NSF) , ensuring the network remains operational during a supervisor failure.

The Supervisor Engine 8-E, running this version, is a high-performance engine that integrates wired and wireless networks.