21. Inter-provider MPLS VPN using non-VPN Transit ProviderWebsite: https://rayka-co.com/lesson/inter-provider-mpls-vpn-using-non-vpn-transit-provider/Youtube: https://youtu.be/Yc7sBRYd96YNon-VPN transit provider is another method in inter-provider MPLS VPNs used when service providers are not directly connected but link through a transit MPLS provider that does not offer VPN services, enabling end-to-end LSPs between PE routers.