Content for TR 29.941 Word version: 17.0.0
4 Selected Solutions
4.1 General
4.2 DNS based solutions#1-4
4.3 SCTP based solution#5 - SCTP Multiplexer (Port)
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
D 3GPP procedures for Service Name and Port Number registry management
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4 Selected Solutions Word‑p. 8
4.1 General Word‑p. 8
4.2 DNS based solutions#1-4 Word‑p. 12
4.2.1 General Word‑p. 12
4.2.2 Solution#1: DNS-SD based solution Word‑p. 13
4.2.3 Solution#2: Service discovery using DNS SRV records Word‑p. 15
4.2.4 Solution#3: Use of multicast address on local link (mDNS) Word‑p. 16
4.2.5 Solution#4: Direct unicast DNS queries to the target node (uDNS) Word‑p. 17
4.2.6 Guidelines for DNS based solutions#1-4 Word‑p. 19
4.3 SCTP based solution#5 - SCTP Multiplexer (Port) Word‑p. 19
4.3.1 General Word‑p. 19
4.3.2 Detailed description Word‑p. 21
4.3.3 Pros and cons Word‑p. 22
4.3.4 Guidelines for SCTP based solution#5 Word‑p. 22
4.4 3GPP allocated port number solution#6 Word‑p. 22
4.4.1 General Word‑p. 22
4.4.2 Detailed description Word‑p. 23
4.4.3 Pros and cons Word‑p. 24
4.4.4 Guidelines for 3GPP allocated port number solution#6 Word‑p. 24
4.5 OAM allocated port number solution#7 Word‑p. 24
4.5.1 General Word‑p. 24
4.5.2 Detailed description Word‑p. 24
4.5.3 Pros and cons Word‑p. 25
4.5.4 Guidelines for OAM allocated port number solution7 Word‑p. 25
4.6 Port Registration and Retrieval via NRF solution#8 Word‑p. 25
4.6.1 General Word‑p. 25
4.6.2 Detailed description Word‑p. 26
4.6.3 Pros and cons Word‑p. 26
4.6.4 Guidelines for Port Registration and Retrieval via NRF solution#8 Word‑p. 26
5 Summary Word‑p. 26
5.1 General Word‑p. 26
5.2 3GPP allocated Service Name and Port Number registry Word‑p. 26
A IANA port allocation policy Word‑p. 27
B Port number use Word‑p. 27
B.1 General Word‑p. 27
B.2 Port number ranges Word‑p. 28
B.3 Service identified by port number not assigned by IANA Word‑p. 29
C IANA procedures for Service Name and Port Number registry management Word‑p. 30
C.1 General principles Word‑p. 30
C.2 Assignment Procedure Word‑p. 30
C.3 IANA Policies for Port Number assignment Word‑p. 31
C.4 Recommendations to designers of application and service protocols Word‑p. 31
C.5 3GPP port assignment applications since 2009 Word‑p. 32
D 3GPP procedures for Service Name and Port Number registry management Word‑p. 34
D.1 General Principles Word‑p. 34
D.2 Assignment Procedure Word‑p. 34
D.3 Port Number Database Word‑p. 34
$ Change history Word‑p. 35
