Introduction:
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| Attribute | Qualifier | Cardinality | Content | Description |
|---|---|---|---|---|
| id | M | 1 | String | The identifier of this extCpdData |
| description | M | 1 | String | Describes the service exposed. |
| virtualLinkRequirement | M | 1..N | String | Refers in an abstract way to the network or multiple networks that the ExtCpd shall be exposed on (ex: OAM, EndUser, backhaul, LI, etc). The intent is to enable a network operator to take decision on to which actual VPN to connect the extCpd to. NOTE 1. |
| networkInterfaceRealizationRequirements | M | 0..1 | datatype.networkInterfaceRealizationRequirements | Details container implementation specific requirements on the NetworkAttachmentDefinition to . See NOTE 2 & 3. |
| inputParamMappings | M | 0..1 | datatype.extCpd.ParamMappings | Information on what parameters that are required to be provided to the deployment tools for the asdExtCpd instance. |
| resourceMapping | M | 0..1 | String | Kubernetes API resource name for the resource manifest as specified e.g. in helm.chart for the service, ingress or pod resource declaring the network interface. Enables, together with knowledge on namespace, the orchestrator to lookup the runtime data related to the extCpd. |
NOTE 1: Corresponds more or less to a virtual_link requirement in ETSI NFV SOL001.
NOTE 2: Applies only for ExtCpds representing secondary network interfaces in a pod.
NOTE 3: Several ExtCpd may refer to same additional network interface requirements.
networkInterfaceRealizationRequirements Information Element
| Attribute | Qualifier | Cardinality | Content | Description |
|---|---|---|---|---|
| trunkMode | M | 0..1 | ”false” | ”true” | If not present or set to”false”, means that this interface shall connect to single network. If set to ”true” then the network interface shall be a trunk interface (connects to multiple VLANS). |
| ipam | M | 0..1 | "infraProvided", "orchestrated", "userManaged" | The default value ("infraProvided") means that the CNI specifies how IPAM is done and assigns the IP address to the pod interface. |
| interfaceType | M | 0..1 | "kernel.netdev", "direct.userdriver", "direct.kerneldriver", "direct.bond", "userspace | This attribute is applicable for passthrough and memif interfaces. Value default value is ”kernel.netdev”. |
| interfaceOptions | M | 0..N | "virtio", | Alternative vNIC configurations the network interface is verified to work with. |
| interfaceRedundancy | M | 0..1 | "infraProvided", "activePassiveBond", "activeActiveBond", "activePassiveL3", "activeActiveL3", ”bondCni”, "Left", "Right" | ”infraProvided” means that the application sees one vNIC but that the infrastruture provides redundant access to the network via both switch planes. ”Left” and ”right” indicates a vNIC connected non-redundantly to the network via one specific (left or right) switchplane. All other attributes indicates a mated vNIC pair in the Pod, one connecting to the network via left switchplane and the other connecting to the network via the right switchplane, and with application using them together as a redundant network interface using a particular redundancy method that need to be accomodated in the node infrastructure. |
| nicOptions | M | 0..N | "examples": ["i710", "mlx-cx5v"] | nics a direct user space driver the application is verified to work with. Allowed values from ETSI registry. |
datatype.ExtCpd.ParamMappings Information Element
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Note 2: The format of the Content strings is specific for each different orchestration templating technology used (Helm, Teraform, etc.). Currently only a format for use with Helm charts is suggested: "helmchartname:[<subchartname>.]0..N[<parentparamname>.]0..N[<paramname>]”. Whether the optional parts of the format are present depends on how the parameter is declared in the helm chart. An example is: ChartNamechartName:subChartName1.subChartName2.subChartName3.ParentParaName1ParentParamName1.ParentParaName2ParentParamName2.ParentParaName3ParentParamName3.paramName.
Note 3: A direct attached (passthrough) network interface, such as an sriov interface, attaches to a network via only one of the two switch planes in the infrastructure.
When using a direct attached network interface one therefore commonly in a pod uses a mated pair of sriov network attachments, where each interface attaches same network but via different switchplane.
The application uses the mated pair of network interfaces as a single logical “swith-path-redundant” network interface – and this is represented by a single ExtCpd.
Also there is a case where a third “bond” attachment interface is used in the pod, bonding the two direct interfaces so that the application do not need to handle the redundancy issues – application just uses the bond interface.
In this case all three attachments are together making up a logical “switch-path-redundant” network interface represented by a single ExtCpd.
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