I work for an ISP who has recently bought out another ISP and integration has been planned. We have one 17Mb upstream connection via our transit provider and the company we have taken over has two upstream connections (one with our transit provider and another one). We each have an AS number and two separate /19 blocks from RIPE. What is the best plan for integration of these ISPs? How would we go about merging them and creating an effective BGP policy?
Any help or guidance to links would be appreciated,