Cat4500es8-universalk9.spa.03.11.05.e.152-7.e5.bin Jun 2026
: Features like Stateful Switchover (SSO) and Resilient Ethernet Protocol (REP).
| Field | Value | Meaning | | :--- | :--- | :--- | | | cat4500es8 | Catalyst 4500 series with the ES8 (Enhanced Supervisor 8) line cards. | | Feature Set | universalk9 | Universal image with K9 cryptography (SSH, IPsec, SSL). | | Sub-package | spa | Shared Port Adapter support (for certain line cards). | | Internal Label | 03.11.05.e | An internal build identifier (less common to see, but related to packaging). | | IOS Version | 152-7.e5 | This maps to IOS 15.2(7)E5 | | File Extension | .bin | Binary image file. |
Support for In-Service Software Upgrades (ISSU) and Non-Stop Forwarding (NSF) to prevent downtime during supervisor failovers.
| Resource | Purpose | |----------|---------| | Catalyst 4500 Series Release Notes, IOS‑XE 3.11.xE | Complete feature, change, and caveat information for this release | | Cisco Software Download Portal (login required) | Obtaining official software images and verifying checksums | | Catalyst 4500/4000 Series Upgrade Documentation | Official Cisco upgrade procedure including pre‑requisites and verification steps | | Cisco Feature Navigator | Determining which licenses support specific features within a release | cat4500es8-universalk9.spa.03.11.05.e.152-7.e5.bin
show license
| Release | Pros vs. 03.11.05.E | Cons vs. 03.11.05.E | |---------|----------------------|----------------------| | | More stable for very old Sup6L | Missing MACsec fixes, fewer route scale | | 03.11.10.E | Security patches (including CSCvx12345 for DHCP DoS) | Larger image size, memory footprint | | IOS-XE 3.7.x (Cat 9k only) | Modern API, Python scripting, model-driven telemetry | Not available for 4500 hardware |
IOS‑XE release 3.11.xE provides enterprise‑grade switching and routing functionality. The universal image supports comprehensive Layer 2 features including VLANs, spanning tree enhancements, and link aggregation via EtherChannel. On the Layer 3 side, the release includes full support for OSPF, EIGRP, BGP, and IS‑IS routing protocols, making the Catalyst 4500 series suitable for distribution and core layer deployments in campus networks. : Features like Stateful Switchover (SSO) and Resilient
After both supervisors have reloaded and SSO is reestablished, confirm the software version:
Later 15.2(7)E releases include early VXLAN bridging and routing support — useful for modern data center leaf-spine designs.
Runs on a Linux-based modular operating system (IOS XE), allowing for better process isolation and system stability compared to traditional monolithic IOS. Bundle Mode | | Sub-package | spa | Shared Port
Switch# copy bootflash:cat4500es8-universalk9.SPA.03.08.04.E.152-4.E4.bin tftp:
If you decide to use it:
for your specific model of Catalyst 4500-E Supervisor or line cards.
