Using BGP between two Internet Service Providers for internet redundancy
Posted on 2013-01-08
I understand that for BGP, I need to purchase an AS number and a minimum of a class C subnet. This is fine, I know it won't be a problem, but here's my question. Right now I only have one internet circuit, (I'm not doing BGP with them right now, but they can do it). We are bringing in a 2nd ISP who can also do BGP so we will have internet redundancy. My question is do I need a class C subnet from both ISP's? With the ISP I currently have I have a /30 WAN connection, and a /28 public routable IP Block. Any assistance would be greatly appreciated. Thanks. .