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Cloud & Infrastructure
Google Cloud Blog·28d ago·5 min read
BGP route policies: Top 3 use cases by customer demand
TL;DR
BGP route policies have been enhanced with policy named sets, allowing for easier management of complex routing configurations. This feature enables network engineers to group and reuse lists of prefixes and communities, simplifying updates across multiple Cloud Routers.
✦ Why It Matters
Network engineers can implement policy named sets today to streamline their BGP route management and enhance routing resilience.
Key Takeaways
- Utilize policy named sets to simplify routing configurations.
- Implement route filtering to enhance network security.
- Use MED to influence preferred traffic paths.
- Tag routes with BGP communities to ensure traffic symmetry.
How It Works
BGP route policies allow for fine-grained control over routing by using the Common Expression Language (CEL) to define rules that filter routes and modify attributes. Policy named sets enable the grouping of multiple prefixes or communities, making it easier to manage complex routing environments.
Techniques like MED modification and AS-PATH prepending help influence traffic paths without altering on-premises hardware.