BGP Routing without a /24?

[Michael Murray]

I have two service providers but only have a handful of public IP addresses. Is there a way to set up BGP (or other) so inbound routes can come over either provider in case one fails?

Thanks,

-mike

[Edison Ortiz]

If you own that block, you can announce it via any provider. Caveat, you need a public AS Number for BGP. Another caveat, you need to advertise a /24 - ISPs won't accept /25 and greater

[Michael Murray]

Edison,

Thanks for the reply.

If I had an ASN and a /24 it would be a straight foward BGP config. My block is a /28. I'm trying to accomplish the same functionality without a /24. Is there any way to get inbound routing via two different ISPs without going to ARIN for a /24?

-mike

[Edison Ortiz · Accepted solution]

I'm afraid not.