C2691-advipservicesk9-mz.124-17.image Upd File

: Essential for GNS3/EVE-NG to prevent the emulator from consuming 100% of your host CPU. A common value for this version is 0x60a48cb8 .

: The feature set. "Advanced IP Services" includes high-end features like advanced security, VPLS, and IPv6. The

If you are using this image for simulation, it is recommended to test the "Idle PC" value within GNS3 to ensure your CPU usage remains low.

Router> show version

The image provides full support for enterprise-grade IPv4 and IPv6 routing protocols: Open Shortest Path First (OSPFv2 and OSPFv3) Enhanced Interior Gateway Routing Protocol (EIGRP) Border Gateway Protocol (BGP) Intermediate System to Intermediate System (IS-IS) Policy-Based Routing (PBR) 2. Industry-Standard Security C2691-advipservicesk9-mz.124-17.image

Once loaded onto a device or emulator, configuring basic secure remote management and routing on this image requires a standard sequence:

Supports standard protocols like OSPF, EIGRP, BGP, and RIPv2.

! Basic system and security configuration Router> enable Router# configure terminal Router(config)# hostname R1-2691 R1-2691(config)# security passwords min-length 8 R1-2691(config)# enable secret SuperSecurePassword123 ! Configuring SSH access (Requires k9 crypto engine) R1-2691(config)# ip domain-name mylab.local R1-2691(config)# crypto key generate rsa The name for the keys will be: R1-2691.mylab.local Choose the size of the key modulus in the range of 360 to 2048 for your General Purpose Keys. Choosing a key modulus greater than 512 may take a few minutes. How many bits in the modulus [512]: 1024 % Generating 1024 bit RSA keys, keys will be non-exportable...[OK] R1-2691(config)# ip ssh version 2 R1-2691(config)# line vty 0 4 R1-2691(config-line)# transport input ssh R1-2691(config-line)# login local R1-2691(config-line)# exit ! Creating local administrator user R1-2691(config)# username admin privilege 15 secret AdminPass321 Use code with caution. Licensing and Compliance Reminder

Shows k9 encryption license status.

Look for lines specifying the size of the CompactFlash card and the available dynamic memory allotment (e.g., 126976K/4096K bytes of memory ). Modern Application: GNS3 and Network Simulation Labs

Includes functional IPv6 routing capabilities. 3. Why Use the 12.4(17) Version Today?

(Advanced IP Services) designation means it contains almost every feature a student needs to study for the CCNA or CCNP, including advanced security, voice, and routing protocols. The GNS3 Legend:

: Stands for Advanced IP Services , featuring K9 (strong encryption). This implies support for advanced IP routing (BGP, EIGRP, OSPF), VPN (IPSec), VoIP, and advanced security. mz : Indicates the file runs in RAM and is compressed. : Essential for GNS3/EVE-NG to prevent the emulator

This indicates that the image is built exclusively for the . The Cisco 2691 shares architectural similarities with the Cisco 3700 series routers rather than the standard 2600XM series. It offers higher performance, dual FastEthernet ports, and increased memory capacity compared to its 2600 predecessors. This image will not boot on a 2611XM, 2621XM, or 2651XM router. 2. Feature Set ( advipservicesk9 )

: Because these images are run using Dynamips, it is crucial to calculate a correct Idle-PC value to prevent 100% CPU usage.

Router# copy tftp flash Address or name of remote host [192.168.1.100]? Source filename [C2691-advipservicesk9-mz.124-17.image]? Destination filename [C2691-advipservicesk9-mz.124-17.image]?