This is the blog of Ronald Bartels that wanders on and off the subject of problem management (that is how it started), but it is best described by Ray who says this is Daddy's thoughts! Like the best music is from the Eighties and a wee dram helps in solving most inconveniences.
Batfish An open source network configuration analysis tool
Batfish finds errors and guarantees the correctness of planned or
current network configurations. It enables safe and rapid network evolution, without
the fear of outages or security breaches. Batfish was originally developed by researchers at Microsoft Research, UCLA, and USC.
Many others have since contributed to it. It is currently maintained by Intentionet,
who also offers Batfish Enterprise, a service that extends and enhances the core
capabilities of Batfish.