diff --git a/docs/fastdds/discovery/simple.rst b/docs/fastdds/discovery/simple.rst index d91787dce..bac2bda3a 100644 --- a/docs/fastdds/discovery/simple.rst +++ b/docs/fastdds/discovery/simple.rst @@ -122,13 +122,13 @@ must listen for incoming Participant Discovery Protocol (PDP) discovery metatraf to a multicast address and another one linked to a unicast address. *Fast DDS* allows for the configuration of an initial peers list which contains one or more such IP-port address pairs corresponding to remote DomainParticipants PDP discovery listening resources, so that the local -DomainParticipant will not only send its PDP traffic to the default multicast address-port specified by its domain, -but also to all the IP-port address pairs specified in the initial peers list. +DomainParticipant will only send its PDP traffic to the IP-port address pairs specified in the initial peers list. A DomainParticipant's initial peers list contains the list of IP-port address pairs of all other DomainParticipants with which it will communicate. -It is a list of addresses that a DomainParticipant will use in the unicast discovery mechanism, together or as an -alternative to multicast discovery. +It is a list of addresses that a DomainParticipant will use in the PDP discovery mechanism, and can hold both multicast +and unicast addresses. +The default multicast address will be used if the list is empty. Therefore, this approach also applies to those scenarios in which multicast functionality is not available. According to the `RTPS standard `_ (Section 9.6.1.1), the RTPSParticipants'