hello @Fozia_Shiekh, sick question btw...! U're facing a common SD-WAN limitation. In Cisco SD-WAN, OMP is not available as a redistribution protocol when leaking routes from the Global VPN to a Service VPN, which is why u're not seeing it in the dropdown.
So , since u're receiving BGP routes from AWS in the Global VPN and want to advertise them to Spoke routers via the HUB using OMP, u'll need to take an indirect approach:
Receive BGP routes in the Global VPN (as u're doing).
Use route leaking to move those routes into the Service VPN on the HUB router. In this step, attach a route policy to filter only the desired 24 prefixes and exclude the default route.
In the Service VPN, configure redistribution into OMP, using a matching route policy if needed.
And G this ensures the BGP learned routes reach the Service VPN and are then advertised over OMP to the Spokes.
Although OMP isn’t available in the Global - Service leak config, once the routes are in the Service VPN, they can be redistributed into OMP.
check these links G:
- https://www.cisco.com/c/en/us/td/docs/routers/sdwan/configuration/routing/ios-xe-17/routing-book-xe/m-routing-leaking-for-service-sharing.html
- https://www.networkacademy.io/ccie-enterprise/sdwan/omp-overview
- https://www.cisco.com/c/en/us/td/docs/routers/sdwan/configuration/Policy-Groups/policy-groups/m-policy-groups.html
hope it helps G
-Enes
