: Designed specifically for the Cisco 3725 Multiservice Access Router.
Before using the image in GNS3 or EVE-NG, you must verify it to avoid persistent "missing files" or "bad image" errors.
If you are using the image outside of GNS3 or need to manually set the value:
EVE-NG utilizes the Dynamips wrapper to run legacy Cisco images:
0x60c09aa0 or 0x60c08728 (crucial for preventing 100% CPU usage in emulators). Key Features and Use Cases
This IOS image is proprietary software owned by Cisco Systems. Its use is governed by a software license. While widely used for educational purposes in network simulators, legitimate acquisition requires a valid service contract. Using this image in production networks is not recommended, as the platform is obsolete. Always ensure you comply with Cisco's licensing terms and any applicable copyright laws.
Note: The table below contains metadata collected for Cisco IOS version 12.4(15)T14 .
If you're performing an IOS upgrade, it's essential to follow a structured process to avoid issues like a failed upgrade, which could leave your router inoperable. Always refer to the official Cisco documentation for the most accurate and detailed instructions.
Important Legal Notice: Cisco IOS images are copyrighted software. You must have a valid Cisco Service Contract (e.g., SMARTnet) to download them directly from Cisco. We cannot host or provide direct download links.
This value ensures the emulated router only uses CPU cycles when the real hardware would.
