Custom advertised routes

With custom advertised routes, you choose which routes Cloud Router advertises to your on-premises router through the Border Gateway Protocol (BGP).

You can specify custom advertised routes on the Cloud Router or for each BGP session. If you specify custom advertised routes on the Cloud Router, they apply to all BGP sessions on the Cloud Router. If you specify custom advertised routes on a BGP session, those advertisements replace the Cloud Router advertisements.

If you configure IPv6 custom advertised routes on a Cloud Router, the IPv6 routes are advertised only in BGP sessions where IPv6 is enabled.

For more information about route advertisement modes and the default behavior, see Route advertisement modes in the Cloud Router overview.

To create resources with custom advertised routes, see the following:

• Create Cloud Routers
• If you already have a Cloud Router, see Establish BGP sessions.

To update existing resources with custom advertised routes, see the following:

• Advertise custom IP ranges
• Advertise specific VPC subnets
• Remove custom advertised routes
• Revert to default advertisement mode