QOS profile configuration: ingress list key parameter

[rservadio]

The following ingress list:

• ingress-8021p-to-per-hop-behavior-mapping-list
• ingress-exp-to-per-hop-behavior-mapping-list
• ingress-ip-dscp-to-per-hop-behavior-mapping-list

have the "queue-name" as key parameter but from the description it appears that the order in the list is important and meaningful: "... First entry in the list [0] relates to p-bit value '0'. Last entry in the list [7] relates to p-bit value '7' "

Two considerations:

1. it should be better to avid an association between p-bit value and the position of the parameters in the list
2. the egress lists, with similar parameters, have a different organization with "mapping-number" as key parameter.

With reference to ingress-8021p-to-per-hop-behavior-mapping-list the proposal is to change the modelling in one of the two proposed options:

CURRENT VERSION: ingress-8021p-to-per-hop-behavior-mapping-list

• queue-name (key)
• drop-precedence-inside-queue

PROPOSED CHANGE option-1: ingress-8021p-to-per-hop-behavior-mapping-list

• p-bit (key)
• queue-name
• drop-precedence-inside-queue

PROPOSED CHANGE option-2 (to be aligned with egress list management): ingress-8021p-to-per-hop-behavior-mapping-list

• mapping-number (key)
• p-bit
• queue-name
• drop-precedence-inside-queue

Same changes could be applied to ingress-exp-to-per-hop-behavior-mapping-list and ingress-ip-dscp-to-per-hop-behavior-mapping-list

[demx8as6]

Proposal: Option #2

[openBackhaul]

Decision made at the 5G-xhaul-call on 26th of April 2023:

802.1 ingress: The following artifacts shall be created in the UML of the QosProfile:

• P8021PerHopBehaviorType datatype
• P8021PerHopBehaviorType::p8021Priority[1] : UINT8 as a read-only key attribute with comment "Value of the p-bits of the VLAN header."
• P8021PerHopBehaviorType::queueName read/write attribute with comment "Name of the queue."
• P8021PerHopBehaviorType::dropPrecedenceInsideQueue read/write attribute with comment "(if dropPrecedenceAt*QueueIsAvail for the referenced queue == false) default value shall be kept and configuration attempts shall be ignored."

The following changes shall be made on the UML of the QosProfile:

• The QosProfileConfiguration::ingress8021pToPerHopBehaviorMappingList shall no longer be of PerHopBehaviorType datatype, but of P8021PerHopBehaviorType datatype instead.

MPLS ingress: The following artifacts shall be created in the UML of the QosProfile:

• ExpPerHopBehaviorType datatype
• ExpPerHopBehaviorType::expPriority[1] : UINT8 as a read-only key attribute with comment "Value of the Exp bits of the MPLS header."
• ExpPerHopBehaviorType::queueName read/write attribute with comment "Name of the queue."
• P8021PerHopBehaviorType::dropPrecedenceInsideQueue read/write attribute with comment "(if dropPrecedenceAt*QueueIsAvail for the referenced queue == false) default value shall be kept and configuration attempts shall be ignored."

The following changes shall be made on the UML of the QosProfile:

• The QosProfileConfiguration::ingressExpToPerHopBehaviorMappingList shall no longer be of PerHopBehaviorType datatype, but of ExpPerHopBehaviorType datatype instead.

Egress: The following artifacts shall be created in the UML of the QosProfile:

• EgressPerHopBehaviorToPriorityBitsMappingType::queueName : QueueNameType = NOT_YET_DEFINED read-only attribute with comment "Name of the queue.".
• EgressPerHopBehaviorToPriorityBitsMappingType::dropPrecedenceInsideQueue : DropPrecedenceType = NOT_YET_DEFINED read-only attribute with comment "(if dropPrecedenceAt*QueueIsAvail for the referenced queue == false) default value shall be kept and configuration attempts shall be ignored.".

The following changes shall be made on the UML of the QosProfile:

• Multiplicity of QosProfileConfiguration::egressPerHopBehaviorTo8021pMappingList changes from [0..24] to [24]
• Multiplicity of QosProfileConfiguration::egressPerHopBehaviorToMplsExpMappingList changes from [0..24] to [24]
• Multiplicity of QosProfileConfiguration::egressPerHopBehaviorToIpDscpMappingList changes from [0..24] to [24]
• Existing PerHopBehaviorType datatype to be deleted.

[openBackhaul]

UML changed as described.