试题详情
简答题what’s the role of community attribute in the bgp route？
  • BGP communitiy can be used to as tag of a set of routes. Those tags can be used for applying specific routing policy for a group of routes.
    There are four well-known communities：
    Internet：all route belongs to this community by default and is advertised freely.
    No-export：routes belong to the community cannot be advertised to EBGP peer.
    No-advertise：routes belong to the community cannot be advertised to any BGP peer.
    Local-as：routes belong to the community cannot be advertised to eBGP peer，or if confederation is used，routes cannot be advertised to conferation eBGP peer and normal eBGP peer.

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