I have been looking at a multi host data centre and am using MPLS to securely share certain resources and considering what architecture considerations for Network Management.
Lets define the problem. Network Management is software and servers that collect data from my network equipment and presents it to me in some useful form. Add to this some documentation and process support tools such as a wiki that holds documentation or a service such as helpdesk package.
The servers have to have IP addresses but what addresses to allocate ? If I use something from the RFC1918 addressing then it is possible that a given VRF might need to use that range. I don’t need the hassle of buying and maintaining routable addresses (although for a very large data centre this would be easy enough to do).
So I spent some time researching the RFC’s and found this little gem.