Find route should suggest alternative routes beside the optimal route

Idea created by tanawat.c-cdg-co-th-esridist on Apr 4, 2011
    • esukit17
    • taewraew
    • nuntanap
    • oukajom
    • taiga.boreal
    • gvernar
    • som_na
     Today, when I play around Google Maps direction function, I found out that beside optimal route it suggests at most two more alternative routes. Is it possible to implement that on Network Analyst routing function?