Switch# redundancy force-switchover
Classic Cisco IOS runs all network features, operational processes, and device drivers within a single, shared memory space. A bug in a single routing protocol component can crash the entire control plane.
| Bug ID | Description / Impact | | :--- | :--- | | CSCvx76066 | Switch crashes due to "HTTP Core" | | CSCw75762 | (General Caveat) | | CSCvx02979 | C9120AX wireless related issue | | CVE-2024-20414 | Web UI cross-site request forgery vulnerability (fixed in this version) | cat4500es8-universalk9.spa.03.11.05.e.152-7.e5.bin
Incorporates hardware-based TrustSec and next-generation protocols via Field Programmable Gate Array (FPGA) devices. System Requirements and Compatibility
The 4500 series (especially older supervisors like the 6/E, 7/E, 8/E) and IOS 15.2(7)E trains are past Cisco’s End of Support. No new security patches or bug fixes. This link or copies made by others cannot be deleted
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The output reveals your current IOS version, boot ROM revision, and total memory available. Compare these values against the release notes for 03.11.05.E. Older supervisor engines may require a ROMMON upgrade before loading the new IOS‑XE image. boot ROM revision
: Includes Flexible NetFlow support specifically for Supervisor Engines like the 8-E.
A successful firmware upgrade requires careful planning. Skipping any step below risks extended network downtime.