Content for TR 29.941 Word version: 18.0.0
4 Selected Solutions
4.1 General
4.2 DNS based solutions#1-4
4.3 SCTP based solution#5 - SCTP Multiplexer (SCTP MUX)
4.4 3GPP allocated port number solution#6
4.5 OAM allocated port number solution#7
4.6 Port Registration and Retrieval via NRF solution#8
5 Summary
A IANA port allocation policy
B Port number use
C IANA procedures for Service Name and Port Number registry management
$ Change history
4 Selected Solutions p. 8
4.1 General p. 8
4.2 DNS based solutions#1-4 p. 12
4.2.1 General p. 12
4.2.2 Solution#1: DNS-SD based solution p. 13
4.2.3 Solution#2: Service discovery using DNS SRV records p. 15
4.2.4 Solution#3: Use of multicast address on local link (mDNS) p. 16
4.2.5 Solution#4: Direct unicast DNS queries to the target node (uDNS) p. 17
4.2.6 Guidelines for DNS based solutions#1-4 p. 19
4.3 SCTP based solution#5 - SCTP Multiplexer (SCTP MUX) p. 19
4.3.1 General p. 19
4.3.2 Detailed description p. 21
4.3.3 Pros and cons p. 22
4.3.4 Guidelines for SCTP based solution#5 p. 22
4.4 3GPP allocated port number solution#6 p. 22
4.4.1 General p. 22
4.4.2 Detailed description p. 23
4.4.3 Pros and cons p. 24
4.4.4 Guidelines for 3GPP allocated port number solution#6 p. 24
4.5 OAM allocated port number solution#7 p. 24
4.5.1 General p. 24
4.5.2 Detailed description p. 24
4.5.3 Pros and cons p. 25
4.5.4 Guidelines for OAM allocated port number solution7 p. 25
4.6 Port Registration and Retrieval via NRF solution#8 p. 25
5 Summary p. 26
A IANA port allocation policy p. 27
B Port number use p. 27
B.1 General p. 27
B.2 Port number ranges p. 28
B.3 Service identified by port number not assigned by IANA p. 29
C IANA procedures for Service Name and Port Number registry management p. 30
C.1 General principles p. 30
C.2 Assignment Procedure p. 30
C.3 IANA Policies for Port Number assignment p. 31
C.4 Recommendations to designers of application and service protocols p. 31
C.5 3GPP port assignment applications since 2009 p. 32
$ Change history p. 34
