iBGP between Control Nodes and Border Nodes in SDA

[akinugas]

Hi Experts,

Could you let me know the recommended iBGP connection establishment for Distributed Border Redundancy (Control Nodes are separated from Border Nodes) ?

[Question]

I understand that Collocated Borders need to establish iBGP connection (per VRF) between them to avoid Blackholing during uplink failure. (left in the slide attached)

How about when the Control node is separated from the border? 

Should we establish iBGP between multiple Borders and Control nodes as well? 

[Roddie Hasan · Accepted solution]

When you configure a distributed Control Plane, Cisco DNA Center will automatically configure a vpnv4 iBGP neighbor between any Borders and the Control Plane to exchange routes on for ever VRF/VN.