Simon Marsh
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49 lines
1.7 KiB
Markdown
49 lines
1.7 KiB
Markdown
---
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title: "BGP Communities"
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geekdocDescription: "BGP communities used in the network"
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weight: 50
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---
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This page describes the use of BGP communities within the network.
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## DN42 Communities
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The [DN42 Route Origin Community](https://dn42.net/howto/Bird-communities) is applied both internally and externally, and is used to influence the [Routing Policy](/network/routing-policy).
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|Community |Description|
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|:---|:---|
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|( 64511 : 40 < x < 54 ) | Route Origin |
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The other DN42 communities are not used in burble.dn42:
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|Community |Description|
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|:---|:---|
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|( 64511 : 0 < x < 21 ) | Max latency |
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|( 64511 : 20 < x < 30 ) | Min bandwidth |
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|( 64511 : 30 < x < 35 ) | Min encryption |
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## Well Known BGP Communities
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The following well known communities are implemented.
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|Community |Description|Action|
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|:---|:---|:---|
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| ( 65535 : 65281 ) | No Export | Prefix should not be exported outside of AS4242422601 |
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| ( 65535 : 65282 ) | No Advertise | Prefix should not be exported to any peers |
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| ( 65535 : 65283 ) | Local-AS | Prefix should not be exported outside of region |
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## burble.dn42 Specific Communities
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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.
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### Informational Communities
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|Community |Description|
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|:---|:---|
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| ( 4242422601 : 120 : _host code_ ) | Route learned on this host |
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| ( 4242422601 : 130 : 1 ) | Route is a direct peer |
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| ( 4242422601 : 140 : _DN42 region_ ) | Route learned in this DN42 region |
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