Seabone makes use of some set of communities to help our customers to better tune their traffic without requiring a manual intervention from us.
All customers are allowed to send the following communities:
| 6762:666 | Null route this host at Seabone edge (valid for a /32 only) |
|---|---|
| 6762:200XX | Don't announce this route to... (see selective announce below) |
The 6762:666 community allows you to block traffic directed to a single host (/32) in your network. This is especially useful during Denial of Service attacks. You may only block a single host within your network. Request assistance by our NOC if you need to null-route a larger block of IP addresses or if you need to block only certain ports/services. Misuse may lead to termination of contract and/or legal action.
This community string implementation is used to permit our customers to control their announcements towards the largest peerings/transits.
The format is 6762:200XX where the fields are coded in the following way:
XX defines the network you don't want to send this route to, according to the following table:
| 01 | AS701 | UUnet/MCI/Verizon |
|---|---|---|
| 02 | AS6453 | Teleglobe |
| 03 | AS1239 | Sprint |
| 05 | AS3320 | Deutsche Telekom |
| 06 | AS5511 | France Telecom |
| 07 | AS1299 | TeliaSonera |
| 08 | AS12956 | Telefonica |
| 09 | AS3356 | Level3 |
| 10 | AS702 | UUnet Europe |
| 11 | AS7132 | AT&T (SBC) |
| 12 | AS174 | Cogent |
| 13 | AS7018 | AT&T |
| 14 | AS1257 | Tele2 |
| 15 | AS3549 | Global Crossing |
| 16 | AS3257 | Tiscali |
| 17 | AS1273 | Cable&Wireless |
| 18 | AS2914 | NTT |
| 19 | AS1668 | ATDN |
| 20 | AS209 | Qwest |
| 21 | AS6461 | Abovenet |
| 22 | AS4134 | China Telecom |
| 23 | AS4837 | China Netcom |
| 24 | AS7922 | Comcast |
| 25 | AS3491 | PCCW |
| 26 | AS5400 | BT |
| 27 | AS2856 | BT (domestic) |
The same scheme above is now extended so as to permit the customers to do selective announcements to the public peering points to which Seabone is connected.
The format is 6762:200XX where the fields are coded in the following way:
XX defines the IXP you don't want to send this route to, according to the following table:
| 99 | LINX |
|---|---|
| 98 | AMSIX |
| 97 | DECIX |
| 94 | EQUINIX Singapore |
| 93 | EQUINIX Ashburn |
| 96 | PAIX Palo Alto |
This scheme works only for peers that Seabone reaches over the public switch fabric. It is not implemented for private peers even if they are on the same router, nor for peers with a hybrid setup (private and public).
All customers will receive at least one of these communities. These communities will help you to choose the routes that you receive from Seabone, if you have the need to route only to a particular area, or if you want to treat your link as a peering link.
| 6762:30 | This is an European route |
|---|---|
| 6762:31 | This is a North-American route |
| 6762:32 | This is a South-American route |
| 6762:33 | This is a Asian route |
| 6762:40 | This is a customer route |
The distinction on geographic area is based on where the route entered Seabone's network. This means that you should not be surprised of seeing a South American customer tagged as North American.