SpaceNet uses BGP community values to control routing announcements towards our customers, towards our upstreams and peerings.
Community settings that control SpaceNet BGP (5539:*) are only accepted from customers. Community values set by our upstreams, e.g. 1273:*, 3549:*, are accepted and forwarded to customers, but otherwise ignored. Incoming routes are tagged with communites that can be used to filter upon route origin:
| Community | Explanation |
|---|---|
| 5539:1xx | Route has been learned from a peer |
| 5539:100 | Frankfurt / DECIX |
| 5539:101 | Frankfurt / DECIX (via route server) |
| 5539:102 | Frankfurt / DFN-WIN (@ DECIX) |
| 5539:120 | Munich / INXS |
| 5539:121 | Munich / INXS (via route-server) |
| 5539:130 | DTAG Munich (direct peering) |
| 5539:160 | DECIX Munich (ALPIX) |
| 5539:161 | DECIX Munich (ALPIX) (via route-server) |
| 5539:170 | ECIX Frankfurt |
| 5539:171 | ECIX Frankfurt (via route-server) |
| 5539:19x | private peerings |
| 5539:2xx | Route has been learned from an upstream provider |
| 5539:200 | Cable & Wireless AS1273 |
| 5539:250 | NTT, AS2914 |
| 5539:260 | Core-Backbone, AS33891 |
| 5539:270 | TNIB Trusted Network, AS21385 |
| 5539:280 | TeliaSonera, AS1299 |
| 5539:4xx | internal use, should never be exposed |
| 5539:500 | Route has been learned from a SpaceNet customer |
Customers can use the following communities to control announcement of their prefixes to the SpaceNet upstream providers and peerings:
| Community | Explanation |
|---|---|
| 5539:1xxy | Peerings |
| 5539:1100 | do not announce to DECIX peers |
| 5539:1101 | as-path prepend 1x 5539 to DECIX peers |
| 5539:1103 | as-path prepend 3x 5539 to DECIX peers |
| 5539:1105 | announce to DECIX peers with a MED of 500 |
| 5539:1200 | do not announce to INXS peers |
| 5539:1201 | as-path prepend 1x 5539 to INXS peers |
| 5539:1203 | as-path prepend 3x 5539 to INXS peers |
| 5539:1205 | announce to INXS peers with a MED of 500 |
| 5539:1400 | do not announce to DFN (AS680) |
| 5539:1401 | as-path prepend 1x to DFN (AS680) |
| 5539:1403 | as-path prepend 3x to DFN (AS680) |
| 5539:1405 | announce to DFN (AS680) with a MED of 500 |
| 5539:1500 | do not announce to DTAG (AS3320) |
| 5539:1501 | as-path prepend 1x to DTAG (AS3320) |
| 5539:1503 | as-path prepend 3x to DTAG (AS3320) |
| 5539:1505 | announce to DTAG (AS3320) with a MED of 500 |
| 5539:1600 | do not announce to ALPIX peers |
| 5539:1601 | as-path prepend 1x 5539 to ALPIX peers |
| 5539:1603 | as-path prepend 3x 5539 to ALPIX peers |
| 5539:1605 | announce to ALPIX peers with a MED of 500 |
| 5539:1700 | do not announce to ECIX FRA peers |
| 5539:1701 | as-path prepend 1x 5539 to ECIX FRA peers |
| 5539:1703 | as-path prepend 3x 5539 to ECIX FRA peers |
| 5539:1705 | announce to ECIX FRA peers with a MED of 500 |
| 5539:2xxy | Upstream Providers |
| 5539:2000 | do not announce to C&W (AS1273) |
| 5539:2001 | as-path prepend 1x to C&W |
| 5539:2003 | as-path prepend 3x to C&W |
| 5539:2005 | announce to C&W with a MED of 500 |
| 5539:2500 | do not announce to NTT (AS2914) |
| 5539:2501 | as-path prepend 1x to NTT |
| 5539:2503 | as-path prepend 3x to NTT |
| 5539:2505 | announce to NTT with a MED of 500 |
| 5539:2600 | do not announce to CoreBackbone (AS33891) |
| 5539:2601 | as-path prepend 1x to CoreBackbone |
| 5539:2603 | as-path prepend 3x to CoreBackbone |
| 5539:2605 | announce to CoreBackbone with a MED of 500 |
| 5539:2700 | do not announce to Trusted Networks (AS21385) |
| 5539:2701 | as-path prepend 1x to Trusted Networks |
| 5539:2703 | as-path prepend 3x to Trusted Networks |
| 5539:2705 | announce to Trusted Networks with a MED of 500 |
| 5539:2800 | do not announce to TeliaSonera (AS1299) |
| 5539:2801 | as-path prepend 1x to TeliaSonera |
| 5539:2803 | as-path prepend 3x to TeliaSonera |
| 5539:2805 | announce to TeliaSonera with a MED of 500 |
| 5539:300x | BGP black-holing service |
| 5539:3000 | black-hole traffic for the specific IP address inside AS5539 |
| 5539:3001 | black-hole traffic for the specific IP address inside AS5539 and our upstream providers (if available) |
| 5539:3010 | black-hole traffic for the specific IP address at our upstream providers (if available), not inside 5539 |
| 5539:3xxx | Local-Pref settings |
| 5539:3070 | set local-preference to 70 (backup only) |
| 5539:3100 | set local-preference to 100 (same as peering/upstream, path len + MED decides) |
| 5539:3130 | set local-preference to 130 (better than peering/upstream, below standard customer value (500))) |
BGP Community settings to control traffic in other networks, e.g. SpaceNet's upstream networks, are accepted and transparently forwarded to the upstream routers. So for special cases, 1273:*, 1299:*, 2914:* etc. can be used. Documentation for those communities can be found here:
If there is anything missing here that you (as a customer of AS5539) need to control your traffic flow, please contact bgp@space.net.