The Cisco IOS XE 3.11.0E image is engineered for high-availability modular and fixed access systems.
: Short for "Software Package Attestation," meaning the image is digitally signed by Cisco for security and authenticity. 03.11.00.E : This is the IOS XE release version.
: Represents the internal Cisco IOS XE release version mapping. cat4500euniversalk9spa031100e1527ebin exclusive
Release 3.11.0E runs on the architecture. Unlike classic IOS, which runs as a single monolithic process, IOS XE separates the kernel (Linux) from the IOS process (IOSd).
: Note that Cisco has announced end-of-life for several components of this series, including Cisco Universal Images for Catalyst 4500 as of March 2023. The Cisco IOS XE 3
: Explicitly built for Catalyst 4500E series chassis and compatible Supervisor Engines (such as the Supervisor 7-E, 7L-E, and 8-E).
(Includes strong cryptographic features for SSH, SNMPv3, and HTTPS). Release Date: Approximately March 2019. Maintenance Status: Extended Maintenance (EM). Supported Hardware : Represents the internal Cisco IOS XE release
The installed on your production switches.
It is compatible with the older Supervisor Engine 6-E or legacy Supervisors (II-Plus, V-10GE), which run "Classic IOS" (denoted usually as cat4500e-universalk9-mz without the SPA/IOS XE versioning). Loading an IOS XE image on non-XE capable hardware will result in a boot failure.
The 3.11.0E software train introduced notable stability and security updates tailored for enterprise access and core layers.