The ORIGN path attribute indicates the origin of the path information. There are three supported values:
IGP (0)
EGP (1)
Incomplete (2)
When a router originates a VPN-IP prefix (from a non-BGP route), it sets the value of the origin attribute to IGP. When a router originates an BGP route for an IP prefix by exporting a non-BGP route from the routing table, it sets the value of the origin attribute to Incomplete. Route policies (BGP import and export) can be used to change the origin value.