Configuration management and revision control, backup configs.
IOS revision watch for Cisco updates/bugs/security reports.
Paging/email for change alerts due to IOS issues and security.
Log file monitoring and alerts based on router/switch events.
Remote monitor of interfaces, CPU, Memory, BGP sessions.
Management of IP assets, address space usage, etc.
Graphical load, traffic, and CPU levels with MRTG and Cricket.