[j-nsp] General BGP question, single asn multi location

[Morgan McLean]

So I have a single ASN and two sites that do not peer directly with each
other, but have eBGP with providers.

Site A takes full routes, advertises a /24
Site B takes defaults only, advertises a /24

I notice I do not get the route advertised at site B by any of my providers
at site A. Is this due to a general misconfiguration of BGP? Are they not
sending me routes from my own ASN? I'm assuming this is where I should be
running an iBGP session between the sites? They're right next to each
other, more like different environments.

And in the future if I have a separate physical site, I need another ASN?

Thanks,
Morgan