I'm using multihoming to 2 providers, one primary and one backup (full routing).
Currently to the backup provider I prepend the AS with 3 bogus entries, to ensure that traffic routes via the primary.
However, I am finding that there is a small amount of traffic that still routes via the backup, one of which is a customer that is having connectivity issues.
It's strange because the traceroutes that route over the backup have at least 14 or so hops whereas the ones over the primary have more like 5.
Anyway I would like to get all traffic to route on the primary - would adding another 2 or 3 bogus path entries realistically do this? I don't really want to be adding 100s to get it to work!
I'm interested in whether this is a realistic solution....