BGP Communities

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.