# BGP Communities [![Black1.png](https://docs.netario.fr/uploads/images/gallery/2025-12/scaled-1680-/N90Y9aS9STnwkK7x-black1.png)](https://docs.netario.fr/uploads/images/gallery/2025-12/N90Y9aS9STnwkK7x-black1.png) ## **BGP Communities** ### Our locations :
**Netaris Location** **Code** **Real Location**
PAR1 **01** DC2Scale PAR2
AMS1 **02** Nikhef Amsterdam
PAR2 **03** Equinix PA5 – Netario infra
### Our BGP communities : #### Our peering partners & transits : For large communities format is as follows : - peer-code→ 1XX(Transit), 2XX(Public peering), 3XX(Private Peering), 5XX(Netaris), 20XX(Customer) - The X will represent different locations defined above - peer-as → The ASN of the peer, no equivalent is possible for legacy communities for 32 bit ASN, so an alias is created below for each upstream or important peer
**Legacy Community** **Large Community** **Upstream / Peering**
64615:1X0 211615:peer-code:peer-as All peers
64615:500 211615:5XX:**211615** Netaris
64615:110 211615:101:**212815** PAR1 - Dyjix
64615:120 211615:102:**209768** AMS1 - White2Net
64615:130 211615:103:**15830** PAR2 - Equinix
64615:2000 211615:20XX:**peer-as** Customer
#### Local preferences : As a customer you can control the local preference of your prefixes on our network :
**Community** **Large Community** **Value**
64615:5010 211615:5000:**10** **10** (Below everything-least preferred)
64615:5100 211615:5000:**100** **100** (Below peers)
64615:5150 211615:5000:**150** **150** (Below customer, above upstream)
64615:5200 211615:5000:**200** **200** (Above customer default)
#### Prepending : As a customer you can control the prepending of your prefixes before we send them to upstream and peering :
**Community** **Large Community** **Result**
64615:6001 211615:6001:0 Prepend AS211615 **1** time
64615:6002 211615:6002:0 Prepend AS211615 **2** time
64615:6003 211615:6003:0 Prepend AS211615 **3** time
#### Partner-specific community : With all of our partners, we have partner-specific communities, here is the format :
**Legacy Community** **Large Community** **Effect**
N/A 211615:6001:**peer-as** **Prepend** **1x** to peer-as
N/A 211615:6002:**peer-as** **Prepend** **2x** to peer-as
N/A 211615:6003:**peer-as** **Prepend** **3x** to peer-as
N/A 211615:6009:**peer-as** **Do not announce** to peer-as
The same applies for all of our peering partners defined above

The use of large community is mandatory for partner-specific communities.

#### Blackhole community : We support the blackhole community and passes it to our peering partners when supported:
**Legacy Community** **Large Community** **Effect**
64615:666 211615:666:0 **Nullroute** /32 v4 and /128 v6
#### Graceful BGP shutdown : We support the well-known community GRACEFUL\_SHUTDOWN :
**Legacy Community** **Large Community** **Effect**
65535:0 211615:5000:0 Set local preference to 0
### Our Routing Policies: #### Our local preferences :
**Route Source / Relationship** **Transport / Variation** **Local Pref Value** **Comments / Policy Considerations**
**Locally Originated** Local **200**
**Direct Customer** Direct **199**
**Direct Upstream** Direct **120**
**Direct Peer** Direct **110**
**Peer via IXP/PNI** IXP/PNI **105**
**Default** N/A **100** Routes that do not clearly fall in one of the above categories
**Distant Mesh Routes** Mesh between PoPs, exact local pref depends on the latency **99-50** These routes are used only when a direct link is not available.