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BGP Communities

Strategic Explorations uses BGP communities to control traffic engineering and propagate route information.

Well Known Community

666: Blackhole (RTBH)

This community is used to drop traffic to a specific IP under DDoS attack.

Community Description
(OURASN, 666, 0) Discard traffic to this prefix (Blackhole)

Public Community

These communities can be set by peers to influence our routing decisions.

2: Local Preference Control

Community Description
(OURASN, 2, 1) Set Local Preference to 100 (default value)
(OURASN, 2, 2) Set Local Preference to 200
(OURASN, 2, 3) Set Local Preference to 0

5: Prepend Control

Community Description
(OURASN, 5, 1) Path Prepend x1
(OURASN, 5, 2) Path Prepend x2
(OURASN, 5, 3) Path Prepend x3
(OURASN, 5, 4) Path Prepend x4
(OURASN, 5, 5) Path Prepend x5

4: Peer Type Indicator

Community Description
(OURASN, 4, 10) Peer Type: Full Table
(OURASN, 4, 20) Peer Type: Transit
(OURASN, 4, 21) Peer Type: Private Transit
(OURASN, 4, 30) Peer Type: Downstream
(OURASN, 4, 40) Peer Type: Peer
(OURASN, 4, 41) Peer Type: Private Peer

6: Route Origin Region Indicator

DN42 region communities are auto translated when importing to our network.

Community Description
(OURASN, 6, 41) Origin Region: Europe
(OURASN, 6, 42) Origin Region: North America-E
(OURASN, 6, 43) Origin Region: North America-C
(OURASN, 6, 44) Origin Region: North America-W
(OURASN, 6, 45) Origin Region: Central America
(OURASN, 6, 46) Origin Region: South America-E
(OURASN, 6, 47) Origin Region: South America-W
(OURASN, 6, 48) Origin Region: Africa-N (above Sahara)
(OURASN, 6, 49) Origin Region: Africa-S (below Sahara)
(OURASN, 6, 50) Origin Region: Asia-S (IN,PK,BD)
(OURASN, 6, 51) Origin Region: Asia-SE (TH,SG,PH,ID,MY)
(OURASN, 6, 52) Origin Region: Asia-E (JP,CN,KR,TW,HK)
(OURASN, 6, 53) Origin Region: Pacific&Oceania (AU,NZ,FJ)
(OURASN, 6, 54) Origin Region: Antarctica
(OURASN, 6, 55) Origin Region: Asia-N (RU)
(OURASN, 6, 56) Origin Region: Asia-W (IR,TR,UAE)
(OURASN, 6, 57) Origin Region: Central Asia (AF,UZ,KZ)

7: Route Import Region Indicator

Community Description
(OURASN, 7, 41) Import Region: Europe
(OURASN, 7, 42) Import Region: North America-E
(OURASN, 7, 43) Import Region: North America-C
(OURASN, 7, 44) Import Region: North America-W
(OURASN, 7, 45) Import Region: Central America
(OURASN, 7, 46) Import Region: South America-E
(OURASN, 7, 47) Import Region: South America-W
(OURASN, 7, 48) Import Region: Africa-N (above Sahara)
(OURASN, 7, 49) Import Region: Africa-S (below Sahara)
(OURASN, 7, 50) Import Region: Asia-S (IN,PK,BD)
(OURASN, 7, 51) Import Region: Asia-SE (TH,SG,PH,ID,MY)
(OURASN, 7, 52) Import Region: Asia-E (JP,CN,KR,TW,HK)
(OURASN, 7, 53) Import Region: Pacific&Oceania (AU,NZ,FJ)
(OURASN, 7, 54) Import Region: Antarctica
(OURASN, 7, 55) Import Region: Asia-N (RU)
(OURASN, 7, 56) Import Region: Asia-W (IR,TR,UAE)
(OURASN, 7, 57) Import Region: Central Asia (AF,UZ,KZ)