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**** In R1 for the Unicycle OVS-DPDK blueprint all VM traffic is vxlan encapsulated
BGP Networking
In case of Unicycle calico is used as the kubernetes CNI thus pods routing information is exchanged via BGP between all controller and worker nodes.
Two options exist to implement the route exchange for calico pods
- Using an external fabric BGP router and peering the calico pods to this router using eBGP
- Using the more traditional full iBGP mesh between all calico pods
Validation has been performed using the external fabric router approach.
In this case the external fabric router need to eBGP peer with all calico pods. To do this dynamic BGP peering is defined in the fabric router to accept BGP connection requests from any BGP speaker with an IP address from the calico 'ksn' network.