I have been tasked with changing our primary BGP path to another provider.
We have an two edge routers at different NAPs and both are peered with many other ISPs through the NAPs network. However, we use two primary tier 1 ISPs for our primary and secondary paths.
At one NAP we are connecting up with a new provider, and retaining the old one until the contract expires.
I am looking for some tips on the migration process. The idea is to use the new provider as our primary path. with all other peers for shortest paths to respective AS's.
How much downtime, and flapping will be caused by doing this. Anyone who has done this before, what are the gotchas.
Thanks a mil