SubnetZero

In my previous post, we saw the theory behind hub-and-spoke VPN. We saw how H/S involves multiple VRFs with cross-importation between them, and we traced the basic flow of a route advertised from one spoke to another.
Next, we are going to look at two options for configuring H/S VPNs. In this post, I will cover using BGP as the PE-CE routing protocol without independent route reflectors. In my next post, I will cover OSPF. Finally, I will return to BGP and examine the issues that come up when we use independent route reflectors with hub and spoke VPN. Read More »