Customers should supply us with a AS-SET macro of all ASNs they announce and keep this up to date.
Inbound policy filters will be built from this; however, this is currently a manual update process, so customers should raise a support case if any changes are planned.
We operate a blackhole (null-route) service for BGP customers. This allows the customer to signal that traffic destined towards specific /32 (IPv4) or /128 (IPv6) prefixes be dropped before reaching their network, without requiring human intervention. Where possible, we propagate this intention upstream to also remove bad traffic from our network as well as our upstreams'.
Existing customers should request setup information from their account manager or by raising a support case.
Using communities, customers can control the announcements/propagation of their prefixes as well as query information about received route origins from us and our upstreams.
These are communities sent to customers attached to all prefixes in the routing table:
| Route Origin by ASN | Route Origin by Site | ||
|---|---|---|---|
| 51945:ASN | The route is learnt from peer ASN | 51945:65400 | Telehouse North |
| 51945:5459 | The route is learnt at LINX | 51945:65401 | Telehouse West |
| 51945:8330 | The route is learnt at LONAP | 51945:65402 | Telehouse East |
| 51945:51706 | The route is learnt at France-IX | 51945:65403 | GlobalSwitch London 2 |
| 8714:6460X | From LINX route server rsX | 51945:65404 | DRT Sovereign House |
| 8330:6460X | From LONAP route server rsX | 51945:65405 | DRT Meridian Gate |
| 51706:6460X | From France-IX route server rsX | 51945:65406 | Equinix HEX 89 |
| Route Type (in order of local preference, best first) | 51945:65407 | Equinix HEX 67 | |
| 51945:65100 | Locally originated | 51945:65408 | Telstra LHC |
| 51945:65105 | Full transit customer | 51945:65409 | Tutis Point/City Reach |
| 51945:65106 | Partial transit customer | 51945:65410 | GlobalSwitch London 1 |
| 51945:65103 | Private peering | 51945:65411 | 4D West Byfleet |
| 51945:65104 | Public peering | 51945:65412 | Pulsant Croydon |
| 51945:65102 | Partial transit upstream | 51945:65413 | BIS/6DG Greenwich |
| 51945:65101 | Global transit upstream | 51945:65414 | Netwise Bermondsey |
| Route Origin by Peering Device | 51945:65415 | Equinix LD4/LD5/LD6 | |
| 51945:65501 | THN RT1 | 51945:65416 | Datum Farnborough |
| 51945:65502 | HEX89 RT1 | 51945:65417 | Interxion LON1 |
| 51945:65503 | THE RT1 | 51945:65418 | Interxion LON2 |
| 51945:65504 | HEX89 SW1 | 51945:65419 | Level(3) Goswell Road |
| 51945:65505 | THN VC1 | ||
We also propagate to customers the communities we receive from upstreams:
Customers can send the following per-prefix to control announcement of the prefix:
| No Exports | |
|---|---|
| 65000:ASN | Do not announce to direct peer ASN |
| 65000:0 | Do not announce to any peer/transit |
| 65000:5459 | Do not announce to any LINX peer |
| 65000:8714 | Do not announce to LINX route servers |
| 65000:51706 | Do not announce to any France-IX peer | 65001:ASN | Do announce to ASN (overrides 65000:x) |
| Upstream Transit | |
| 65010:0 | NTT: Do not announce to any peer |
| 65010:439 | NTT: Do not announce to any peer outside EU region |
| 65010:4029 | NTT: Do not announce to North America peers* |
| 65010:4229 | NTT: Do not announce to Europe peers* |
| 65010:4429 | NTT: Do not announce to Asia peers* |
| 65010:4629 | NTT: Do not announce to South America peers* |
| 65020:0 | TeliaSonera: Do not announce to any peer* |
| 65020:2009 | TeliaSonera: Do not announce to EU peers* |
| 65020:5009 | TeliaSonera: Do not announce to US peers* |
| 65020:7009 | TeliaSonera: Do not announce to Asia peers* |
| 65040:0 | Cogent: Do not announce to any peer or customer* |
| 65040:3000 | Cogent: Do not announce to SFI peers (but do to customers)* |
| 65050:0 | Level(3): Do not announce to any peer (but do to customers)* |
| 65050:64980 | Level(3): Do not announce to any EU peer (but do to customers)* |
| 65050:64990 | Level(3): Do not announce to any US peer (but do to customers)* |