I am new to BGP and have a question about redundancy.
It's my understanding that I can get a T1 from two different ISP's and setup BGP to propagate a route to my network to both ISP's core routers.
Hopefully I am correct so far?
My question is our current public IP block was assigned to us by Sprint. If I get a backup T1 through AT&T, can I propagate a route to my Sprint IP block to AT&T's routers so it comes in on the AT&T circuit?
We recently had a Sprint outage and realized we depend to heavily on a single carrier. We want our website to have redundancy via another carrier.
Another question I have is, assuming the above works, should my Sprint T1 go down, how long does it typically take for the core routers to realize it needs to go to AT&T to get to me?