On 2015-02-03, Rod Whitworth <[email protected]> wrote: > There has been a suggestion that $Best should be seeing the /21 as two /22s > which would > make it a more preferable path.
> Any suggestions? > > I don't like unaggreated net blocks and I don't know how to modify the bgpd > config to do > that either. I think this is an occasion where deaggregation is the only way to do what you need. Because some networks filter on RIR minimum allocations, it may be beneficial to continue to advertise the /21 over both transits, and make the /22s additional (rather than replacing /21 with 2x/22). In terms of bgpd config, add "network" lines for the two /22's, and use filters to selectively advertise them. Good luck with the op Rod, I hope it goes well.
