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Communities

Blackhole

Community Description
57187:666 Blackhole

Origin based type

Community Description
57187:1000 Upstream
57187:2500 IXP
57187:3000 Downstream

Origin based ixp

Community Description
57187:2501 UAE-IX
57187:2502 Smarthub-IX

Origin based upstream

Community Description
57187:1001 DU
57187:1002 GCX

Reject based type

Community Description
57187:5000 do not announce Upstreams
57187:5100 do not announce Downstreams
57187:5200 do not announce IXPs

Reject based region

Community Description
57187:5301 do not announce Middle East
57187:5302 do not announce Europe
57187:5303 do not announce North America
57187:5304 do not announce Africa
57187:5305 do not announce Asia
57187:5306 do not announce South America

Reject based peer

Community Description
57187:5201 do not announce UAE-IX
57187:5202 do not announce Smarthub-IX

Reject based upstream

Community Description
57187:5001 do not announce DU
57187:5002 do not announce GCX

Local Preference

Community Description
57187:5401 set local preference 50 (lowest possible, backup)
57187:5402 set local preference 100 (equal transit, backup)
57187:5403 set local preference 200 (equal peer, backup)
57187:5404 set local preference 280
57187:5405 set local preference 290
57187:5406 set local preference 300 (equal customer, default)
57187:5407 set local preference 310
57187:5408 set local preference 320

Prepend

Community Description
57187:5555 do not announce to any ASN
57187:5901 prepend once to all ASNs
57187:5902 prepend twice to all ASNs
57187:5903 prepend thrice to all ASNs

Prepend upstreams

Community Description
57187:5601 prepend once to all Upstreams
57187:5602 prepend twice to all Upstreams
57187:5603 prepend thrice to all Upstreams

Prepend ixps

Community Description
57187:5701 prepend once to all Peers
57187:5702 prepend twice to all Peers
57187:5703 prepend thrice to all Peers

Prepend downstreams

Community Description
57187:5801 prepend once to all Downstreams
57187:5802 prepend twice to all Downstreams
57187:5803 prepend thrice to all Downstreams