The C2691-advipservicesk9-mz.124-17.image is a specific Cisco IOS software image designed for the Cisco 2691 Multiservice Platform router. It is a popular image for network emulation in tools like GNS3 and EVE-NG because it supports a wide range of advanced networking features. 1. Decoding the Image Name
The filename follows Cisco's standard naming convention, which describes its hardware compatibility and capabilities:
C2691: Specifies the target hardware, the Cisco 2691 router.
advipservicesk9: The feature set—Advanced IP Services. This is a high-tier package that includes advanced security, QoS, and voice features. The "k9" signifies that it includes strong payload encryption (like 3DES/AES).
mz: Indicates the image runs from RAM (m) and is compressed (z). 124-17: The IOS version, specifically Release 12.4(17). 2. Using the Image in Emulators (GNS3 / EVE-NG)
Because the Cisco 2691 is an older "Dynamips" platform, this image is widely used for CCNA/CCNP labs. How to Add to GNS3: Cisco 2691 - GNS3
"C2691-advipservicesk9-mz.124-17.image" Cisco IOS (Internetwork Operating System) software image designed for the Cisco 2691 Multiservice Platform
Here is a breakdown of what this specific image string represents: Filename Breakdown
: The hardware platform (Cisco 2600 series, specifically the 2691 model). advipservicesk9 C2691-advipservicesk9-mz.124-17.image
: The feature set. "Advanced IP Services" includes high-end features like advanced security, VPLS, and IPv6. The
indicates it includes "strong" payload encryption (3DES/AES).
: Indicates the file is RAM-resident and compressed using the ZIP format. : The software version (IOS 12.4, release 17). Common Use Cases
This specific image is highly popular in the networking community for the following reasons: Network Emulation
: It is widely considered one of the most stable and feature-rich images for use in emulators like Certification Prep
: Because it supports a broad range of features (Inter-VLAN routing, OSPF, EIGRP, BGP, and VPNs), it is frequently used by students preparing for the Legacy Hardware Support
: It provides a reliable software path for older Cisco 2691 units still in lab or niche production environments. Important Note on Licensing
Cisco IOS software is proprietary. To use this image legally, you must have a valid software license from Cisco Systems The C2691-advipservicesk9-mz
. Distribution or downloading of these images from third-party sites often violates Cisco's End User License Agreement (EULA). Are you trying to load this image onto a physical router or set it up in a virtual environment like GNS3?
What is C2691-advipservicesk9-mz.124-17.image?
The "C2691-advipservicesk9-mz.124-17.image" file is a specific version of the Cisco IOS (Internetwork Operating System) image for the Cisco 2691 router. The file name can be broken down into several parts:
C2691: This refers to the Cisco 2691 router model.advipservicesk9: This indicates that the image provides advanced IP services, including support for features like VPNs, QoS, and others. The k9 suffix specifically denotes that the image includes cryptographic features, which enable support for secure protocols like IPsec.mz: This indicates that the image is a universal image, which can be used on various types of Cisco routers, including the 2691.124-17: This represents the specific version of the IOS software:
124 corresponds to the major and minor version (12.4).17 corresponds to the release number.Key Features of C2691-advipservicesk9-mz.124-17.image
The C2691-advipservicesk9-mz.124-17.image provides a range of features and functionalities for the Cisco 2691 router, including:
Release Details
The IOS version 12.4(17) was released in 2006 and has been a stable and widely used version for many years. This particular version provides a good balance between features, stability, and support.
Router Model: Cisco 2691
The Cisco 2691 is a modular access router that provides flexible and scalable connectivity options for small to medium-sized networks. It's commonly used in enterprise and service provider environments.
IOS Image Types
There are several types of IOS images available for Cisco routers, including:
mz images: universal images, which can be used on various types of Cisco routersbin images: specific images for a particular router modelSoftware Support and Maintenance
Cisco provides software support and maintenance for IOS images through its Technical Assistance Center (TAC) and online resources. For a specific version like 12.4(17), support may be limited compared to more recent versions.
This file is a specific operating system for the Cisco 2691 series router.
advipservicesk9This is a high-end feature set for the 2691 platform. It includes:
Not included compared to advipservicesk9_wan or enterprise? On 2691, advipservicesk9 is near-maximum. You won't get things like c2691-ipvoice features (VoIP gateways) or c2691-advsecurity (older subset). C2691 : This refers to the Cisco 2691 router model
Cisco IOS filenames are not arbitrary; they follow a strict naming convention that provides immediate technical insight. Let’s parse this string piece by piece.
C2691| Image Name | Platform | Feature Set | Main Difference | | :--- | :--- | :--- | :--- | | C2691-advipservicesk9-mz.124-17.image | 2691 | Advanced IP Services + VPN + MPLS | Full enterprise routing | | C2691-ipbase-mz.124-17.image | 2691 | IP Base only | No VPN, no MPLS, no advanced QoS | | C2691-advsecurityk9-mz.124-17.image | 2691 | Advanced Security | VPN + Firewall, but no MPLS / IPv6 | | c3725-adventerprisek9-mz.124-15.T14.image | 3725 | Enterprise Plus | Similar but for 3725 platform; newer IOS 12.4(15)T |