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This topic describes the BGP communities that can be used to control routing policy. For example, peers can tag their routes to the route servers to adjust the route preference on the network or to control the distribution of advertised prefixes. This can be useful in cases where you want to peer with the entire IX except for one or two specific networks. You can also filter routes based on a geographic location by specifying a METRO_ID. For a list of IDs, see Metro IDs. MegaIX route servers support several traffic engineering communities to assist peers in controlling route preference and distribution. BGP communities in the range
are stripped while all others are passed on to peers.

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BGP community values

You can use standard BGP communities to define export policy to peers with 2-byte ASNs, and extended BGP communities for both 2-byte and 4-byte ASN peers.

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Euro-IX communities

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Large communities

Last modified on August 21, 2026