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Content for  TR 29.835  Word version:  17.1.0

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4  RequirementsWord‑p. 10

5  Key IssuesWord‑p. 12

6  SolutionsWord‑p. 13

6.1  GeneralWord‑p. 13

6.2  Solution#1: 3GPP allocating port numbersWord‑p. 14

6.2.1  GeneralWord‑p. 14

6.2.2  Detailed descriptionWord‑p. 14

6.2.2.1  GeneralWord‑p. 14

6.2.2.2  Summary of the solutionWord‑p. 15

6.2.3  ImpactsWord‑p. 15

6.2.4  Pros and consWord‑p. 15

6.3  Solution#2: Allocating port numbers via OAMWord‑p. 16

6.3.1  GeneralWord‑p. 16

6.3.2  Detailed descriptionWord‑p. 16

6.3.3  ImpactsWord‑p. 16

6.3.4  Pros and consWord‑p. 16

6.4  Solution#3: DNS-SD based solutionWord‑p. 17

6.4.1  GeneralWord‑p. 17

6.4.2  Detailed descriptionWord‑p. 17

6.4.3  ImpactsWord‑p. 18

6.4.4  Pros and consWord‑p. 18

6.5  Solution#4: Service discovery using DNS SRV recordsWord‑p. 18

6.5.1  GeneralWord‑p. 18

6.5.2  Detailed descriptionWord‑p. 19

6.5.3  ImpactsWord‑p. 19

6.5.4  Pros and consWord‑p. 19

6.6  Solution#5: Use of multicast address on local linkWord‑p. 20

6.6.1  GeneralWord‑p. 20

6.6.2  Detailed descriptionWord‑p. 20

6.6.3  ImpactsWord‑p. 20

6.6.4  Pros and consWord‑p. 20

6.7  Solution#6: Direct unicast DNS queries to the target nodeWord‑p. 21

6.7.1  GeneralWord‑p. 21

6.7.2  Detailed descriptionWord‑p. 21

6.7.3  ImpactsWord‑p. 22

6.7.4  Pros and consWord‑p. 22

6.8  Solution#7: SCTP Multiplexer (Port)Word‑p. 22

6.8.1  GeneralWord‑p. 22

6.8.2  Detailed descriptionWord‑p. 24

6.8.3  ImpactsWord‑p. 25

6.8.4  Pros and consWord‑p. 25

6.9  Solution#8: SCTP Multiplexer ApplicationWord‑p. 25

6.9.1  GeneralWord‑p. 25

6.9.2  Detailed descriptionWord‑p. 26

6.9.3  ImpactsWord‑p. 27

6.9.4  Pros and consWord‑p. 27

6.10  Solution#9: TCP Port Service Multiplexer (TCPMUX)Word‑p. 27

6.10.1  GeneralWord‑p. 27

6.10.2  Detailed descriptionWord‑p. 27

6.10.3  ImpactsWord‑p. 28

6.10.4  Pros and consWord‑p. 28

6.11  Solution#10: Standardized and common port for all new SCTP based interfaces with a standardized Payload Protocol Identifier for each interfaceWord‑p. 28

6.11.1  GeneralWord‑p. 28

6.11.2  Detailed descriptionWord‑p. 29

6.11.3  ImpactsWord‑p. 29

6.11.4  Pros and consWord‑p. 29

6.12  Solution#11: Form a work group to look at port number requirements from 3GPP and work towards relaxing the IETF port allocation policiesWord‑p. 30

6.12.1  GeneralWord‑p. 30

6.12.2  Detailed descriptionWord‑p. 30

6.12.3  ImpactsWord‑p. 31

6.12.4  Pros and ConsWord‑p. 31

6.13  Solution#12: Port Registration and Retrieval via NRFWord‑p. 32

6.13.1  GeneralWord‑p. 32

6.13.2  Detailed descriptionWord‑p. 32

6.13.3  ImpactsWord‑p. 32

6.13.4  Pros and consWord‑p. 32

6.14  Solution#13: Port information retrieval directly from an NFWord‑p. 32

6.14.1  GeneralWord‑p. 32

6.14.2  Detailed descriptionWord‑p. 33

6.14.3  ImpactsWord‑p. 33

6.14.4  Pros and consWord‑p. 33

6.15  Solution#14: application-layer protocol negotiation over (D)TLSWord‑p. 33

6.15.1  GeneralWord‑p. 33

6.15.2  Detailed descriptionWord‑p. 34

6.15.3  ImpactsWord‑p. 34

6.15.4  Pros and consWord‑p. 35

6.16  Solution#15: Multiplexing based on Service Name IndicationWord‑p. 35

6.16.1  GeneralWord‑p. 35

6.16.2  Detailed descriptionWord‑p. 35

6.16.3  ImpactsWord‑p. 36

6.16.4  Pros and consWord‑p. 36

7  Comparison, Evaluations and ConclusionsWord‑p. 36

A  IANA port allocation policyWord‑p. 47

B  Port number useWord‑p. 48

C  IANA procedures for Service Name and Port Number registry managementWord‑p. 50

D  How future port number allocations from IETF/IANA could be addressedWord‑p. 55

D.1  GeneralWord‑p. 55

D.2  Key provisions for the draft RFCWord‑p. 55

D.2.1  IntroductionWord‑p. 55

D.2.2  BackgroundWord‑p. 55

D.2.3  ObjectivesWord‑p. 56

D.2.4  Clarifying BCP 165 guidelinesWord‑p. 56

$  Change historyWord‑p. 57


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