C2691-advipservicesk9-mz.124-17.image

This file is a specific operating system for the Cisco 2691 series router.

9. References and further reading

• Consult Cisco Release Notes and Configuration Guides for IOS 12.4(17) ADVIPSERVICES for exact command availability, platform caveats, and memory/flash requirements.
• Check Cisco End-of-Life/EOS announcements for 2600-series to plan hardware refresh.

2. Feature Set: advipservicesk9

This is a high-end feature set for the 2691 platform. It includes: C2691-advipservicesk9-mz.124-17.image

• Advanced IP routing: OSPF, EIGRP, BGP, IS-IS, RIP v1/v2, static routes
• Multicast: PIM (Sparse/Dense Mode), IGMP, MSDP
• Quality of Service (QoS): CBWFQ, LLQ, policing, shaping, NBAR
• Security:
  • IPSec VPN (3DES, AES) – the "k9" indicates strong crypto
  • GRE tunneling
  • Zone-Based Firewall (ZBF)
  • IOS IPS (Intrusion Prevention System – limited)
  • Control Plane Policing (CoPP)
• IPv6: Routing (OSPFv3, RIPng, static), tunneling, basic transition mechanisms
• MPLS: Label switching, VPNs (L3VPN, AToM) – very useful for labbing
• Management: SNMP, NetFlow, Syslog, SSH (requires crypto), HTTP/HTTPS server

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). This file is a specific operating system for

1.1 The "advipservicesk9" Feature Set Explained

The advipservices set is one of the most feature-rich images for the Cisco 2691 platform. It includes: Consult Cisco Release Notes and Configuration Guides for

• Advanced IP routing: OSPF, EIGRP, BGP, IS-IS, and RIP (v1 & v2)
• Multicast support: PIM, IGMP, and MSDP
• Quality of Service (QoS): Class-based weighted fair queuing (CBWFQ), low latency queuing (LLQ), traffic shaping, policing
• IP Services: NAT, DHCP server/relay, HSRP, VRRP, GLBP
• MPLS: Layer 3 MPLS VPN support (crucial for service provider labs)
• Security features: Zone-based firewall (ZBFW), IPS, control plane policing (CoPP)
• VPN technologies: GRE, IPsec with 3DES/AES (via the k9 encryption)

⚠️ Note: The "k9" suffix indicates that this image contains strong encryption. In many jurisdictions, Cisco required end-user export declarations to obtain such images.