There are a plethora of switching paths available to various Cisco routers and Cisco IOS? releases.
plethora
[?pl?θ(?)r?]
noun
(a plethora of)an excess of (something)
太多，過多，泛濫，過剩
a plethora of committees and subcommittees.
泛濫的委員會和分委員會。
■(Medicine)an excess of a bodily fluid, particularly blood
(醫)多體液症（尤指多血症）