Cat4500es8-universalk9.spa.03.11.05.e.152-7.e5.bin ((hot)) Jun 2026

verify /md5 bootflash:cat4500es8-universalk9.spa.03.11.05.e.152-7.e5.bin

ISSU allows for a software upgrade on a dual-supervisor switch with little to no disruption by upgrading the standby supervisor first, then failing over the active role. However, as documented in Cisco community discussions, the process can fail with an error like %C4K_REDUNDANCY-2-IOS_VERSION_CHECK_FAIL: IOS version mismatch. Redundancy feature may not work as expected. This occurs when the active and standby supervisor engines are running different IOS versions, even if the mismatch is minor.

If you decide to use it:

As an extended maintenance release, IOS 15.2(7)E5 focuses on stability, security, and a broad feature set for the Catalyst 4500 platform. cat4500es8-universalk9.spa.03.11.05.e.152-7.e5.bin

The universalk9 image supports strong encryption. This means SSHv2, SNMPv3 with AES, 802.1X with advanced EAP methods, and MACsec on capable line cards.

Version is generally considered a "Star" or "Maintenance" release. In the Cisco lifecycle, these releases focus on:

Simplifies the deployment of new access layer switches across the campus. Why This Specific Version? verify /md5 bootflash:cat4500es8-universalk9

Understanding Cisco IOS XE: A Deep Dive into cat4500es8-universalk9.spa.03.11.05.e.152-7.e5.bin

: This is the underlying classic Cisco IOS code mapping version —specifically, Cisco IOS Release 15.2(7)E5 . The "E5" sub-indicator points to the fifth engine rebuild of that specific maintenance train.

The output should list your new image file as the BOOT variable. This occurs when the active and standby supervisor

This image is – the .e5 build means it’s a mature maintenance release. But it’s also old (circa 2018–2019). For air-gapped networks or legacy setups, it’s fine. For anything else, plan an upgrade to a modern platform.

: The Cisco IOS classic code baseline equivalence . While the switch runs the modern modular IOS XE operating system environment, the underlying routing and switching code maps natively to classic Cisco IOS Release 15.2(7)E5 .

: The standard binary execution file format that is loaded directly onto the switch's local flash storage (typically bootflash: ). Technical Specifications & Architecture Hardware Compatibility

: Provides advanced routing features including BGP , OSPF , and EIGRP , though specific support (like BGP) requires the Enterprise Services license. Operational Considerations

Before loading this image onto your Supervisor, ensure you have: