ManageEngine OpUtils provides the following feature rich range of tools for specifically monitoring CISCO routers.
Config File Manager: Utility to download/upload the StartUp and/or the Running config files from or to the given CISCO Router. The tool also shows the difference between the two files.
TFTP Server: Tool to view the Config Files available in the TFTP Root. You can also change the TFTP Root and edit/upload config files from here.
Device Scan: Utility to scan a subnet or a range of IP Addresses to collect the details of the Cisco Devices in the scanned range.
Device Explorer : Utility to scan a Cisco device to get the details like device snapshot, chassis details, IOS details, flash memory details, interfaces, IP routes, CPU and memory utilization, and access lists.