We are currently changing ISPs and therefore changing our /24 routable space and was looking for some insight on how others have accomplished this.
We currently have service with Carrier A and as part of a WAN converstion to Metro Ethernet we are moving our IP service to Carrier B. I've tried to convience the higher-ups to keep both and utilize BGP so we wouldn't have to go through a transition with no luck.
The need currently is to run both during a conversion period. I have concerns over routing as we start to move translations from one network to the other. Has anyone else gone through this process and offer any insight? Is it best to purchase another firewall bundle or just make the new service another interface on existing firewalls?