以 “Release Notes for the Catalyst 3750, 3560, and 2960 Switches, Cisco IOS Release 12.2(50)SE” мебели софия为例。
在 “Deciding Which Files to Use” 中提到 “For IPv6 capability on the Catalyst 3750 or 3560 switch or on the Cisco EtherSwitch service modules, you must order the advanced IP services image upgrade from Cisco. ” 并在紧接着的表中有 “c3750-advipservicesk9-tar.122-50.SE.tar” 和 “c3560-advipservicesk9-tar.122-50.SE.tar”。但是在 “New Software Features” 的 “Catalyst 3750 and 3560 Switches” 中注明了 “These IPv6 features are now supported in the IP services and IP base software images:” 和 “The advanced IP services image is now end-of-sale (EOS) and end-of-life (EOL).”
在 Download Software 里面根本没有 12.2.50-SE(ED) 的 advanced IP services image 下载，估计是写这个 Release Notes 的同志按照习惯直接复制粘贴了 Deciding Which Files to Use 段，然后把版本号替换了一下。
