Standard Communities
BGP Standard Community |
AS ingress location |
1050:10 |
Dallas, TX |
1050:11 |
Miami, FL |
1050:12 |
Houston, TX |
1050:13 |
Austin, TX |
1050:14 |
Fremont, CA |
BGP Graceful Shutdown
BGP Standard Community |
Description |
65535:0 |
GRACEFUL_SHUTDOWN |
We set the local preference to 0 for prefixes marked with this community in accordance
with RFC8326. This allows for operators to specifically
encourage new paths to be found prior to BGP sessions being shut down deliberately.
Blackhole
BGP Standard Community |
Description |
1050:666 |
Blackhole traffic specifically within our AS |
65535:666 |
Generic blackhole instruction |
Any prefix received with blackhole communities set automatically have
NO_EXPORT applied in compliance with RFC7999.
All prefix sizes are supported, including IPv4 /32 and IPv6 /128.
Large Communities
Distribution control
BGP Large Community |
Description |
1050:0:0 |
Do not announce route to any peers by default |
1050:1:peer-as |
Explicitly announce route to peer-as |
Routes with these communities must still match an approved transit prefix list.
ASN-based Selective NO_EXPORT has priority over these communities
Relation function
BGP Large Community |
Description |
1050:3:1 |
Route originated internally |
1050:3:2 |
Route learned from a customer |
1050:3:3 |
Route learned from a peering partner |
1050:3:4 |
Route learned from a transit provider |
1050:3:5 |
Route learned from an IX |
ASN-based Selective NO_EXPORT
BGP Large Community |
Description |
1050:4:64498 |
Do not export route to AS 64498 |
1050:4:64499 |
Do not export route to AS 64499 |
1050:4:65551 |
Do not export route to AS 65551 |
RPKI Validation Status
BGP Large Community |
Description |
1050:1000:1 |
Prefix is RPKI VALID |
1050:1000:2 |
Prefix is RPKI UNKNOWN |
1050:1000:3 |
Prefix is RPKI NOT CHECKED |
1050:1000:4 |
Prefix is RPKI INVALID |
RPKI status communities are not set on updates to any peer. It is considered harmful to
manipulate path attributes based on validation state as it potentially introduces harmful
large-scale route churn as discussed here.
The communities are reserved here for looking glass and/or research purposes.