Filtering Policy: AS_PATH attribute

Filtering Policy: AS_PATH attribute

AS_PATH attribute

  1. Routes whose AS_PATH is longer than 24 ASNs are rejected.
  2. The left-most ASN in the AS_PATH of any route announced to the route server must be the ASN of the announcing client.
  3. Routes whose AS_PATH contains private or invalid ASNs are rejected.
  4. Routes with an AS_PATH containing one or more "never via route-servers" networks' ASNs are rejected.
  5. List of "never via route-servers" networks' ASNs is generated from PeeringDB.

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