For specifying the BGP community attribute only, you also can specify community-ids as one of the
following well-known community names defined in RFC 1997:
no-advertise—Routes containing this community name are not advertised to other BGP peers.
no-export—Routes containing this community name are not advertised outside a BGP confederation
boundary.
no-export-subconfed—Routes containing this community are advertised to IBGP peers with the same
AS number, but not to members of other confederations.
llgr-stale—Adds a community to a long-lived stale route when it is readvertised.
no-llgr—Marks routes which a BGP speaker does not want to be retained by LLGR. The Notification
message feature does not have any associated configuration parameters.
https://www.juniper.net/documentation/us/en/software/junos/bgp/topics/ref/statement/communit
y-edit-routing-options.html
