BGP Community filtering

Provide a BGP community filtering mechanism to peers

Speed-IX route server peers are able to manipulate outbound routing policies via an in-band mechanism using BGP communities.

Currently, we offer the following options:

  • Do not announce a prefix to a certain peer: 0:peer-as
  • Announce a prefix to a certain peer: 41441:peer-as
  • Do not announce a prefix to any peer: 0:41441

For destination peers employing a 32-bit ASN, you can use the large BGP community as follows:

  • do not announce a prefix to a certain peer: 41441:0:peer-as
  • announce a prefix to a certain peer: 41441:1:peer-as
  • do not announce a prefix to any peer: 41441:0:0

For destination peers employing a 32-bit ASN, you also can use the route target extended BGP community as follows:

  • do not announce a prefix to a certain peer: RT:0:peer-as
  • announce a prefix to a certain peer: RT:41441:peer-as
  • do not announce a prefix to any peer: RT:41441:0