I have Cisco 2611MX router, I am about to upgrade ios so I would like to
1. Default ios, latest released ios with there size.
2. I also like to know Default ios, latest released ios of other router also.( Cisco 2691/2811 router, 3560/2960/3750 switches)
3. What happens if upgrading crashes in between? & what should I do if it happens.