life cycle

[revilo3246]

anyone , I am currently looking for any white papers, documentation or any informations that pertains to the current industry trends with regards to useful life cycle/depreciation of network infrastructures (e.g. routers, switches, telephony, etc.). This includes information about Cisco's EoL timelines (how long are devices usually in service before EOL; what is the timeline from EoL announcement to the actual end of support, etc..)...thanks!

[jackyoung]

Please search Cisco.com, there is such information. But may not cover all of your requirements. IMO, the trend may be driven by the market and the equipment itself can work a long period of time, it depends on what new feature is required but current platform cannot support, so new platform created and phase out old platform. Just my 2 cents.