BGP Communities

Netrouting uses informational communities to tag all routes leaving the AS47869 network. The communities describe how a particular route is learned and where. You should never receive more than one informational community on an IP prefix learned from 47869

Informational Communities
47869:CTRPP

Communities are always used in the following format: 47869:CTRPP

47869 Standard preamble
C Continent Code
T Route Type
R Region Code
PP City Code
C - Continents

Netrouting routes are marked to reflect their continental scope as follows:

T - Relationships/Type
Description Type Local Preference
Transit 100
Peer Public 400
Peer Private 500
Peer Partial 150
Customer Partial 600
Customer Transit 650
Internal 800
R-Region
North-West North North-East
West Central East
South-West South South-East
PP - City Codes
11Amsterdam, NL 12Rotterdam, NL 13The Hague, NL
14Frankfurt, DE 15Stockholm, SE 16Miami, FL
18Bucharest, RO 20Hong Kong, CN
Action communities
Blackhole Communities
  • 47869:666 Blackhole
  • 47869:665 Blackhole outside of this continent
  • 47869:664 Blackhole outside of this region
  • 47869:663 Blackhole outside of this country
No Export Communities
  • 47869:999 No export
  • 47869:998 No export outside of this continent
  • 47869:997 No export outside of this region
  • 47869:996 No export outside of this country
  • 65003:5111 No export to any eBGP
  • 65002:5111 No export to any peering
  • 65001:5111 No export to any transit
Perpend Communities
  • 47869:1111 Prepend once
  • 47869:2111 Prepend twice
  • 47869:3111 Prepend thrice
  • 65003:1111 Prepend once to any eBGP
  • 65003:2111 Prepend twice to any eBGP
  • 65003:3111 Prepend thrice to any eBGP
  • 65002:1111 Prepend once to any peering
  • 65002:2111 Prepend twice to any peering
  • 65002:3111 Prepend thrice to any peering
  • 65001:1111 Prepend once to any transit
  • 65001:2111 Prepend twice to any transit
  • 65001:3111 Prepend thrice to any transit
Local Pref communities
  • 47869:100 Set local preference 100
  • 47869:200 Set local preference 200
  • 47869:400 Set local preference 400
  • 47869:600 Set local preference 600

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