I am looking forward to split a prefix for downlink traffic. Let me just put my thoughts in more specific case.
1. Running eBGP with 3-ISPs (Multihoming).
2. Advertised 192.168.0.0/22 on three ISPs as per PBR.
1. I want to force the uplink via ISP-1.
2. I want to force the downlink traffic 6 class C networks via ISP2.
3. I want to force the downlink traffic for rest of 2 Class-C network via ISP-3.
please suggest the workaround with e-BGP.