Diameter script for more that 7 switches

I am looking for programmer with acknoledge with cisco routers en switches. The current macro command in cisco calculates the diameter as 7 because the ieee standaard has a limited seven switches in a ring. The macro command ajust automaticly the spanning tree timers ( hello, forward delay and max age ) So a need a program that calculates more that seven switches up to 255 in a ring. A program must be written to calculate MSTP ( multiple spanning tree ). sources are : [login to view URL] [login to view URL]