We are creating a Public Peering Exchange using Mikrotik CCR 1072 as Route Server.
Got connected with Google (AS15169) and some downstream members also.
As a Route Server in CCR1072, we are able to configure BGP & Filters to share the routes to Google & Downstream.
But Download Traffic from Google to Downstream is not coming through the IX Port but Upload is proper as per the Prefixes announce by AS15169.
After several sessions of communication with Google NOC, they have shared our Route Table, and found that they are getting all required prefixes, but in the Route Table BGP AS PATH is showing [AS-of-IXP] also, as below:
On upstream (Google): AS-of-IXP, AS-of-Downstream
On downstream (Members): AS-of-IXP, 15169
As a router server, neither Google nor Downstream should get AS-of-IXP in BGP AS PATH of Route Table.
Is there any solution available in Filters or BGP Configuration ?