参考看看:
Download Software 「不是說要下載就可以下載的」
http://www.cisco.com/cisco/software/navigator.html?a=a&i=rpm
cisco 都有console 介面應該可以用tftp的方式,以前是這樣用router的,不曉得現在有無變化。當然整個機器故障的話就沒辦法了。
Upgrading Software Images on Catalyst 2950 and 2955 Series Switches Using the Command Line Interface
http://www.cisco.com/en/US/products/hw/switches/ps700/products_tech_note09186a00801347e2.shtml
How to Upgrade Software Images on Catalyst Switch Layer 3 Modules
http://www.cisco.com/en/US/products/hw/switches/ps700/products_tech_note09186a00801347e2.shtml
另外最好的解答都在 <www.cisco.com>