---
title: "BGP Communities"
geekdocDescription: "BGP communities used in the network"
weight: 50
---
This page describes the use of BGP communities within the network.

## DN42 Communities

[DN42 Communities](https://dn42.net/howto/Bird-communities) are applied both internally and externally, and are used to influence the [Routing Policy](/home/routing-policy).

|Community  |Description|
|:---|:---|
|( 64511 : 0 < x < 21 )   &nbsp; | Max latency |
|( 64511 : 20 < x < 30 ) &nbsp; | Min bandwidth |
|( 64511 : 30 < x < 35 ) &nbsp; | Min encryption |
|( 64511 : 40 < x < 54 ) &nbsp; | Route Origin |

## Well Known BGP Communities

The following well known communities are implemented.

|Community &nbsp;|Description|Action|
|:---|:---|:---|
| ( 65535 : 65281 ) &nbsp; | No Export                  | Prefix should not be exported outside of AS4242422601 | 
| ( 65535 : 65282 ) &nbsp; | No Advertise &nbsp; | Prefix should not be exported to any peers |
| ( 65535 : 65283 ) &nbsp; | Local-AS                   | Prefix should not be exported outside of region |

## burble.dn42 Specific Communities

burble.dn42 implements [large BGP communities](http://largebgpcommunities.net/), with [ISO 3166-1 / UNSD](https://en.wikipedia.org/wiki/ISO_3166-1) country, and [UNSD](https://unstats.un.org/unsd/methodology/m49/) region codes. 

### Informational Communities

|Community &nbsp;|Description|
|:---|:---|
| ( 4242422601 : 120 : _host code_ )   &nbsp; | Route learned on this host | 
| ( 4242422601 : 130 : 1 )   &nbsp; | Route is a direct peer | 
| ( 4242422601 : 140 : _DN42 region_ )   &nbsp; | Route learned in this DN42 region |