I have a task to re-design IP addressing for 2 sites. Have these doubts,
1. At one site we are extending hosts by changing the mask from /24 to /23 for class A ip adress.
What all things i need to keep in mind when i change the mask on the router, then switch, then servers?
Will there be any kind of service disruption?
2. I will need to add a new subnet range at another site and remove the current subnet range after a month. This is also class A. Shall I plan to put the new subnet as secondary IP range or primary IP range or vice versa?
The old subnet will be taken to another site later.
ip address 10.xxx.xx.xx /23 primary
ip address 10.vvv.vv.vv /23 secondary