This feature template configures the switch to allow secure remote login using a local username/password database, disables insecure Telnet access, and generates the necessary cryptographic keys.
# 1. Copy image to Flash (if not already present) copy tftp: flash:cat4500e-universalk9.spa.03.11.05.e.152-7.e5.binThis image is designed exclusively for the 4500-E chassis with supported supervisor engines:
Unsupported hardware: Classic (non-E) 4500 chassis, Supervisor II+, IV, V, or V-10GE. Loading this image on those platforms will result in a boot failure.
Line cards compatible with this image include all 4500-E series line cards (e.g., WS-X4648-RJ45V+E, WS-X4712-SFP+E, WS-X4748-RJ45V+E).
No software is perfect, and this image has its limitations:
This indicates the image is specifically compiled for the Cisco Catalyst 4500-E Series switches. The “E” distinguishes the Enhanced chassis (like the 4507R+E, 4510R+E) from the older 4500 series (non-E). E-series supervisors include the Supervisor 7-E, 7L-E, 8-E, and 8L-E. This image will not work on non-E supervisors like the Sup II+ or Sup V.
show version | include System image show license feature show module
DISCLAIMER: This report is generated for informational purposes. Always refer to the official Cisco Bug Search Tool and PSIRT advisories. The MD5 hashes and bug IDs are illustrative; confirm against actual Cisco databases before deployment.
Understanding Cisco IOS XE Release 03.11.05.E (15.2(7)E5) for Catalyst 4500E
In the world of enterprise networking, stability and security are the two pillars of a reliable infrastructure. If you are managing a Cisco Catalyst 4500E series switch, you have likely encountered the specific software image: cat4500e-universalk9.spa.03.11.05.e.152-7.e5.bin.
This long-form identifier describes a critical maintenance release within the Cisco IOS XE 3.11.xE train. Decoding the Filename
To understand the capabilities of this software, we can break down the naming convention:
cat4500e: Designed specifically for the Catalyst 4500E chassis (such as the 4503-E, 4506-E, 4507R+E, and 4510R+E).
universalk9: This is a "Universal" image containing all features (Base, IP Base, Enterprise Services). The "k9" indicates it supports strong payload encryption (triple DES/AES).
spa: Indicates a digitally signed software package, ensuring the firmware hasn't been tampered with. 03.11.05.E: This is the IOS XE version.
152-7.e5: This is the equivalent classic IOS version (15.2(7)E5), which is the underlying feature set. Key Features and Use Cases
The 15.2(7)E5 release is part of the "Extended Maintenance" program. This means Cisco focused heavily on bug fixes, security hardening, and reliability rather than introducing experimental new features. 1. High Availability (VSS)
For organizations using the Virtual Switching System (VSS) to pair two 4500E chassis into a single logical unit, this version provides the necessary stability for control-plane redundancy. It ensures that if one supervisor engine fails, the second takes over without dropping traffic. 2. Security and Compliance
The universalk9 designation allows for the configuration of:
MACsec Encryption: Hardware-based encryption for hop-by-hop security.
Cisco TrustSec: Simplifies the rollout of security policies using SGTs (Scalable Group Tags).
SSHv2 and SNMPv3: Essential for meeting modern audit requirements. 3. Smart Licensing
By this version, Cisco had refined the "Right-to-Use" (RTU) and Smart Licensing models, making it easier for administrators to activate Enterprise Services features via the CLI without needing a physical hardware key or complex PAK files for every upgrade. Installation and Memory Requirements
Before deploying cat4500e-universalk9.spa.03.11.05.e.152-7.e5.bin, it is vital to verify your Supervisor Engine's resources.
Supported Supervisors: Typically used with Supervisor 7-E, 7L-E, 8-E, and 8L-E.
RAM/Flash: Ensure you have at least 2GB of RAM (though 4GB is standard on later Supervisors) and sufficient space on the bootflash: to store the .bin file, which usually exceeds 400MB. Why Use This Version Today?
As the Catalyst 4500E series transitions toward the end of its lifecycle in favor of the Catalyst 9400 series, many organizations are looking for a "final resting version"—a stable software release to run until the hardware is retired. Release 15.2(7)E5 is often chosen because it addresses long-standing vulnerabilities (like PSIRTs related to OpenSSL) found in earlier 3.6 or 3.8 builds.
The cat4500e-universalk9.spa.03.11.05.e.152-7.e5.bin image is a powerhouse for legacy campus networks. It offers a mature, secure, and feature-rich environment for the Cisco Catalyst 4500E, ensuring that your backbone remains functional while you plan your migration to next-generation SD-Access architectures.
The file cat4500e-universalk9.spa.03.11.05.e.152-7.e5.bin is a Cisco IOS XE software image for the Catalyst 4500E series switches. This specific release (3.11.5E / 15.2(7)E5) is a maintenance update focused on system stability and security rather than new features. Software Release Overview
This image uses the Universal feature set, which includes the universalk9 designation, meaning it supports strong cryptography (K9) and contains all software features (IP Base and Enterprise Services). The specific features available are determined by the license applied to the hardware. Software Version: Cisco IOS XE 3.11.5E IOS Version: 15.2(7)E5
Platform Support: Catalyst 4500E Series (Supervisor Engines 7-E, 7L-E, 8-E, and 8L-E) Release Type: Maintenance release (caveat fixes only) Key Maintenance and Fixes
Release 15.2(7)E5 was specifically designed to address software caveats and improve stability. While it introduced no new features, it provides continued support for the robust feature set established in earlier 3.11.xE releases.
Security & Stability: These maintenance rebuilds typically address critical security vulnerabilities (such as SNMP or HTTP server issues) found in the 15.2(7)E code train.
Hardware Compatibility: It supports high-density 10 Gigabit Ethernet fiber and enterprise-class aggregation functions provided by Supervisor 7-E and 8-E engines. Operational Considerations
The cat4500e-universalk9.spa.03.11.05.e.152-7.e5.bin is a Cisco IOS XE consolidated software image designed for Catalyst 4500-E series switches equipped with Supervisor Engine 7-E, 7L-E, or 8-E. This 15.2(7)E5 release provides stable operating features, including VSS support and IPv6 capabilities, with an approximate file size of 191.75 MB. For more details, visit Cisco.
The file cat4500e-universalk9.spa.03.11.05.e.152-7.e5.bin is a Cisco IOS XE 3.11.5E software image for Catalyst 4500E and 4500-X series switches. It is an Extended Maintenance (EM) release intended for stability in campus and core networks. Software Specs Version Code: 03.11.05.E (corresponds to IOS 15.2(7)E5).
Feature Set: universalk9 (Universal Crypto), supporting various license levels like LAN Base, IP Base, and Enterprise Services via Right-to-Use (RTU) licenses.
Compatibility: Supports Supervisor Engines 7-E, 7L-E, 8-E, 8L-E, and 9-E, as well as the Catalyst 4500-X chassis. Installation Guide (Bundle Mode)
Since this is a .bin file, it is typically installed in Bundle Mode, where the switch boots the monolithic image directly into RAM. Preparation:
Verify available space on bootflash: or slavebootflash: (for redundant supervisors). Backup your current configuration and current IOS image. File Transfer:
Use TFTP or FTP to copy the image to the switch:copy tftp: bootflash:cat4500e-universalk9.spa.03.11.05.e.152-7.e5.bin Boot Configuration:
Set the boot variable to point to the new image:conf tboot system flash bootflash:cat4500e-universalk9.spa.03.11.05.e.152-7.e5.bin
Verify the config-register is set to 0x2102 (standard boot). Verification:
Run show bootvar to ensure the correct image is prioritized. Reload the switch: reload. After rebooting, confirm with show version. Critical Tips
As a universalk9 image, this firmware provides: