C2691-advipservicesk9-mz.124-17.image |top| Guide

| Problem | Likely Cause | Solution | |---------|--------------|----------| | Router boots only to ROMmon | Bad image or insufficient DRAM | Upgrade RAM; verify checksum of image | | BGP won't establish | TCP mss mismatch | ip tcp adjust-mss 1440 on interface | | Crypto commands missing | Non-k9 image loaded | Check show version – look for k9 | | High CPU in GNS3 | Incorrect idle-pc | Use idlepc get in GNS3 console | | %SYS-2-MALLOCFAIL | Memory fragmentation | Add memory-size iomem 25 and reload |

Each part of that "story" tells you exactly what the software can do: The hardware platform (Cisco 2691 Router). advipservicesk9: C2691-advipservicesk9-mz.124-17.image

: Specifies the target hardware, the Cisco 2691 router. | Problem | Likely Cause | Solution |

| Part | Meaning | | :--- | :--- | | | Platform: Cisco 2691 router | | advipservicesk9 | Feature Set: Advanced IP Services with K9 = Encryption (3DES/AES) | | mz | Image type: m ain image, z ipped (compressed) | | 124-17 | IOS version: 12.4(17) | | .image | File extension (Cisco IOS image) | hostname Lab-Router

! hostname Lab-Router ! interface FastEthernet0/0 ip address 192.168.1.1 255.255.255.0 no shutdown ! interface FastEthernet0/1 ip address 203.0.113.2 255.255.255.248 no shutdown ! ip route 0.0.0.0 0.0.0.0 203.0.113.1 ! line vty 0 4 password cisco login transport input ssh ! crypto key generate rsa modulus 1024 !