I have one network setup with Cisco 7200 routers, IPv4 blocks (/22) and ASN from APNIC.
I am running BGP in my network with Internet link to two Internet providers.
I have many applications like DNS,Web mail etc in IPv4 IPs.
As part of migrating my network to IPv6, I got IPv6 also from APNIC.
I can't replace my IPv4 all on a sudden with IPv6. I want to run both of them parallely.
IPv4 and IPv6 should run parallely in my network. Gradually I will replace IPv4 with IPv6.
I would like to know the step by step configuration/procedures involved in this.