C2691-advipservicesk9-mz.124-17.image May 2026

C2691-advipservicesk9-mz.124-17.image

The is a Cisco IOS software image specifically for the Cisco 2691 router . It is widely used in network emulation environments like GNS3 and EVE-NG because the 2691 hardware is well-supported by the MIPS-based emulator Dynamips. Breakdown of the Image Name

• m: Could imply that it's for a specific hardware architecture (though "m" specifically is a bit ambiguous without context).
• z: Often denotes a specific packaging or a certain type of executable image.

mainline release. This image is widely recognized in the networking community as a "gold standard" for lab environments and certification prep due to its stability and broad feature support. Image Specification Breakdown Platform (C2691): C2691-advipservicesk9-mz.124-17.image

• AT&T, Verizon, and other carriers often required CPE routers to support MPLS. This image allows the 2691 to act as a PE (Provider Edge) or CE (Customer Edge) router running LDP, MP-BGP, and MPLS VPNs (VRF).

• No 10 Gigabit support: The 2691 maxes out at FastEthernet (100 Mbps).
• No modern cryptography: While it supports AES, it lacks support for newer algorithms like SHA-2 in hardware acceleration (SHA-2 requires AIM-VPN/SSL module).
• CPU Bottlenecks: Enabling both BGP and IPsec VPN can push the 200 MHz R7000 CPU to 100% utilization, causing packet loss.
• End of Support: No security patches since 2014. Running this in a production network is a compliance risk (PCI-DSS, HIPAA, etc.).

only in isolated labs

Use .

Some manufacturing, utilities, and government facilities still run Cisco 2691 routers due to long replacement cycles. This image provides: C2691-advipservicesk9-mz

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). m : Could imply that it's for a