I'm preparing to upgrade the IOS on two types of routers: an 1841 and 3825. The 1800's have 12.4(1a) and the 3800 has 12.4(17a) IOS installed. I understand that I'm to use the following link to find the proper upgrade: http://tools.cisco.com/ITDIT/CFN/
My question is: Once I've performed the upgrade using this example, http://www.cisco.com/en/US/products/hw/routers/ps214/products_tech_note09186a0080110ed1.shtml
- Will the configuration be saved on the router or does the configuration get wiped out? How would I save the Configuration before the process?