C2691-advipservicesk9-mz.124-17 Upd [ Newest | 2025 ]

Before deploying 12.4(17) in production, understand that . It contains unpatched vulnerabilities that modern attackers can exploit:

: Full support for BGP (Border Gateway Protocol) , OSPF, EIGRP, and RIPv2.

version 12.4 hostname PE1 ip vrf CUSTOMER_A rd 65000:1 route-target export 65000:1 route-target import 65000:1 ! mpls label protocol ldp interface Loopback0 ip address 10.0.0.1 255.255.255.255 ! interface FastEthernet0/0 ip address 192.0.2.1 255.255.255.252 mpls ip ! interface FastEthernet0/1 ip vrf forwarding CUSTOMER_A ip address 172.16.1.1 255.255.255.0 ! router bgp 65000 bgp router-id 10.0.0.1 neighbor 10.0.0.2 remote-as 65000 neighbor 10.0.0.2 update-source Loopback0 ! address-family vpnv4 neighbor 10.0.0.2 activate neighbor 10.0.0.2 send-community extended exit-address-family ! address-family ipv4 vrf CUSTOMER_A neighbor 172.16.1.2 remote-as 65001 neighbor 172.16.1.2 activate exit-address-family C2691-advipservicesk9-mz.124-17

Use it in GNS3 to master advanced routing, but do not deploy it on your internet edge.

This appears to be a legacy release (12.4 is from the mid-2000s), no longer supported by Cisco for updates or security fixes. It is shown here for educational or archival purposes only. Before deploying 12

The advipservicesk9 image is the gold standard for . It supports MPLS, advanced BGP, and VPNs, which are required for CCIE Routing & Switching (v5) labs. Even though production networks have moved to IOS-XE, the CLI behavior of 12.4(17) is identical on fundamental levels.

This article provides a deep dive into the filename nomenclature, feature set, hardware compatibility, security implications, and practical use cases for this specific IOS build. mpls label protocol ldp interface Loopback0 ip address 10

Understanding the nomenclature is vital for network engineers to ensure they are deploying the correct software for their hardware and feature requirements: