diff options
| author |   hp1256 <hp1256@att.com> | 2017-09-07 08:59:09 -0700 |
|---|---|---|
| committer | hp1256 <hp1256@att.com> | 2017-09-07 08:59:09 -0700 |
| commit | 934533b627d1af1aab53b0f00d3b4f4637d831ef (patch) | |
| tree | 3343bd730d886094cb44cc118678c6bf32662807 /docs/Chapter7.rst | |
| parent | 247c5c0aa643c6460c260227c3cc33c5720439c1 (diff) | |
VNFRQTS -Requirements Ch7d Reqs Std Format
VNFRQTS -Requirements Updated Chapter 7d requirements to standard format
Change-Id: Ia2181a87140135a6b86d51973fc7dcc7651b9d06
Issue-ID:VNFRQTS-85
Signed-off-by: hp1256 <hp1256@att.com>
Diffstat (limited to 'docs/Chapter7.rst')
| -rw-r--r-- | docs/Chapter7.rst | 118 |
1 files changed, 53 insertions, 65 deletions
diff --git a/docs/Chapter7.rst b/docs/Chapter7.rst index 34d0405..b9830de 100644 --- a/docs/Chapter7.rst +++ b/docs/Chapter7.rst @@ -889,71 +889,59 @@ delivery method to use for particular data sets. The selected methods must be agreed to prior to the on-boarding of the VNF into ONAP design studio. -Table 11. Monitoring & Management - -+----------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+------------+------------+ -| **Principle** | **Description** | **Type** | **ID #** | -+==============================================+=====================================================================================================================================================================================================================================================================================================================================================================================================================================================================================================================================================================================================================================================================================================================================================================+============+============+ -| VNF telemetry via standardized interface | VNFs must provide all telemetry (e.g., fault event records, syslog records, performance records etc.) to ONAP using the model, format and mechanisms described in this section. | Must | 13005 | -+----------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+------------+------------+ -| Encoding and Serialization | Content delivered from VNFs to ONAP is to be encoded and serialized using JSON (option 1). High-volume data is to be encoded and serialized using Avro, where Avro data format are described using JSON (option 2) [8]_. | Must | 13010 | -| | | | | -| | - JSON plain text format is preferred for moderate volume data sets (option 1), as JSON has the advantage of having well-understood simple processing and being human-readable without additional decoding. Examples of moderate volume data sets include the fault alarms and performance alerts, heartbeat messages, measurements used for VNF scaling and syslogs. | | | -| | | | | -| | - Binary format using Avro is preferred for high volume data sets (option 2) such as mobility flow measurements and other high-volume streaming events (such as mobility signaling events or SIP signaling) or bulk data, as this will significantly reduce the volume of data to be transmitted. As of the date of this document, all events are reported using plain text JSON and REST. | | | -| | | | | -| | - Avro content is self-documented, using a JSON schema. The JSON schema is delivered along with the data content (http://avro.apache.org/docs/current/ ). This means the presence and position of data fields can be recognized automatically, as well as the data format, definition and other attributes. Avro content can be serialized as JSON tagged text or as binary. In binary format, the JSON schema is included as a separate data block, so the content is not tagged, further compressing the volume. For streaming data, Avro will read the schema when the stream is established and apply the schema to the received content. | | | -| | | | | -| | - In the future, we may consider support for other types of encoding & serialization (e.g., gRPC) based on industry demand. | | | -+----------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+------------+------------+ -| Reporting Frequency | The frequency that asynchronous data is delivered will vary based on the content and how data may be aggregated or grouped together. For example, alarms and alerts are expected to be delivered as soon as they appear. In contrast, other content, such as performance measurements, KPIs or reported network signaling may have various ways of packaging and delivering content. Some content should be streamed immediately; or content may be monitored over a time interval, then packaged as collection of records and delivered as block; or data may be collected until a package of a certain size has been collected; or content may be summarized statistically over a time interval, or computed as a KPI, with the summary or KPI being delivered. | Must | 13020 | -| | | | | -| | - We expect the reporting frequency to be configurable depending on the virtual network function’s needs for management. For example, Service Provider may choose to vary the frequency of collection between normal and trouble-shooting scenarios. | | | -| | | | | -| | - Decisions about the frequency of data reporting will affect the size of delivered data sets, recommended delivery method, and how the data will be interpreted by ONAP. However, this should not affect deserialization and decoding of the data, which will be guided by the accompanying JSON schema. | | | -+----------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+------------+------------+ -| Addressing and Delivery Protocol | ONAP destinations can be addressed by URLs for RESTful data PUT. Future data sets may also be addressed by host name and port number for TCP streaming, or by host name and landing zone directory for SFTP transfer of bulk files. | Must | 13030 | -| | | | | -| | - REST using HTTPS delivery of plain text JSON is preferred for moderate sized asynchronous data sets, and for high volume data sets when feasible. | | | -| | | | | -| | - VNFs must have the capability of maintaining a primary and backup DNS name (URL) for connecting to ONAP collectors, with the ability to switch between addresses based on conditions defined by policy such as time-outs, and buffering to store messages until they can be delivered. At its discretion, the service provider may choose to populate only one collector address for a VNF. In this case, the network will promptly resolve connectivity problems caused by a collector or network failure transparently to the VNF. | | | -| | | | | -| | - VNFs will be configured with initial address(es) to use at deployment time. After that the address(es) may be changed through ONAP-defined policies delivered from ONAP to the VNF using PUTs to a RESTful API, in the same way that other controls over data reporting will be controlled by policy. | | | -| | | | | -| | - Other options are expected to include: | | | -| | | | | -| | - REST delivery of binary encoded data sets. | | | -| | | | | -| | - TCP for high volume streaming asynchronous data sets and for other high volume data sets. TCP delivery can be used for either JSON or binary encoded data sets. | | | -| | | | | -| | - SFTP for asynchronous bulk files, such as bulk files that contain large volumes of data collected over a long time interval or data collected across many VNFs. This is not preferred. Preferred is to reorganize the data into more frequent or more focused data sets, and deliver these by REST or TCP as appropriate. | | | -| | | | | -| | - REST for synchronous data, using RESTCONF (e.g., for VNF state polling). | | | -| | | | | -| | - The ONAP addresses as data destinations for each VNF must be provided by ONAP Policy, and may be changed by Policy while the VNF is in operation. We expect the VNF to be capable of redirecting traffic to changed destinations with no loss of data, for example from one REST URL to another, or from one TCP host and port to another. | | | -+----------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+------------+------------+ -| Asynchronous and Synchronous Data Delivery | VNFs are to deliver asynchronous data as data becomes available, or according to the configured frequency. The delivered data must be encoded using JSON or Avro, addressed and delivered as described in the previous paragraphs. | Must | 13040 | -+----------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+------------+------------+ -| | VNFs are to respond to data requests from ONAP as soon as those requests are received, as a synchronous response. | Must | 13050 | -+----------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+------------+------------+ -| | Synchronous communication must leverage the RESTCONF/NETCONF framework used by the ONAP configuration subsystem. This shall include using YANG configuration models and RESTCONF (https://tools.ietf.org/html/draft-ietf-netconf-restconf-09#page-46). | Must | 13060 | -+----------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+------------+------------+ -| | The VNF must respond with content encoded in JSON, as described in the RESTCONF specification. This way the encoding of a synchronous communication will be consistent with Avro. | Must | 13070 | -+----------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+------------+------------+ -| | ONAP may request the VNF to deliver the current data for any of the record types defined in Section 8.d Data Model for Event Records below. The VNF must respond by returning the requested record, populated with the current field values. (Currently the defined record types include the common header record, technology independent records such as Fault, Heartbeat, State Change, Syslog, and technology specific records such as Mobile Flow, Signaling and Voice Quality records. Additional record types will be added in the future as they are standardized and become available.) | Must | 13080 | -+----------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+------------+------------+ -| | ONAP may request the VNF to deliver granular data on device or subsystem status or performance, referencing the YANG configuration model for the VNF. The VNF must respond by returning the requested data elements. | Must | 13090 | -+----------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+------------+------------+ -| | If YANG models need to be translated to and from JSON, (https://trac.tools.ietf.org/id/draft-lhotka-netmod-yang-json-00.html) should be utilized for translation, meaning YANG configuration and content can be represented via JSON, consistent with Avro, as described in “Encoding and Serialization” section. | Should | 13100 | -+----------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+------------+------------+ -| Security | VNFs must support secure connections and transports. | Must | 13110 | -+----------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+------------+------------+ -| | Access to ONAP and to VNFs, and creation of connections, must be controlled through secure credentials, log-on and exchange mechanisms. | Must | 13120 | -+----------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+------------+------------+ -| | Data in motion must be carried only over secure connections. | Must | 13130 | -+----------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+------------+------------+ -| | Service Providers require that any content containing Sensitive Personal Information (SPI) or certain proprietary data must be encrypted, in addition to applying the regular procedures for securing access and delivery. | Must | 13140 | -+----------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+------------+------------+ +Monitoring & Management Requirements + +**VNF telemetry via standardized interface** + +* R-xxxxx The VNF **MUST** provide all telemetry (e.g., fault event records, syslog records, performance records etc.) to ONAP using the model, format and mechanisms described in this section. + +**Encoding and Serialization** + +* R-xxxxx The VNF **MUST** encode and serialize content delivered to ONAP using JSON (option 1). High-volume data is to be encoded and serialized using Avro, where Avro data format are described using JSON (option 2) [8]_. + + - JSON plain text format is preferred for moderate volume data sets (option 1), as JSON has the advantage of having well-understood simple processing and being human-readable without additional decoding. Examples of moderate volume data sets include the fault alarms and performance alerts, heartbeat messages, measurements used for VNF scaling and syslogs. + - Binary format using Avro is preferred for high volume data sets (option 2) such as mobility flow measurements and other high-volume streaming events (such as mobility signaling events or SIP signaling) or bulk data, as this will significantly reduce the volume of data to be transmitted. As of the date of this document, all events are reported using plain text JSON and REST. + - Avro content is self-documented, using a JSON schema. The JSON schema is delivered along with the data content (http://avro.apache.org/docs/current/ ). This means the presence and position of data fields can be recognized automatically, as well as the data format, definition and other attributes. Avro content can be serialized as JSON tagged text or as binary. In binary format, the JSON schema is included as a separate data block, so the content is not tagged, further compressing the volume. For streaming data, Avro will read the schema when the stream is established and apply the schema to the received content. + - In the future, we may consider support for other types of encoding & serialization (e.g., gRPC) based on industry demand. + +**Reporting Frequency** + +* R-xxxxx The VNF **MUST** vary the frequency that asynchronous data is delivered based on the content and how data may be aggregated or grouped together. For example, alarms and alerts are expected to be delivered as soon as they appear. In contrast, other content, such as performance measurements, KPIs or reported network signaling may have various ways of packaging and delivering content. Some content should be streamed immediately; or content may be monitored over a time interval, then packaged as collection of records and delivered as block; or data may be collected until a package of a certain size has been collected; or content may be summarized statistically over a time interval, or computed as a KPI, with the summary or KPI being delivered. + - We expect the reporting frequency to be configurable depending on the virtual network function’s needs for management. For example, Service Provider may choose to vary the frequency of collection between normal and trouble-shooting scenarios. + - Decisions about the frequency of data reporting will affect the size of delivered data sets, recommended delivery method, and how the data will be interpreted by ONAP. However, this should not affect deserialization and decoding of the data, which will be guided by the accompanying JSON schema. + +**Addressing and Delivery Protocol** + +ONAP destinations can be addressed by URLs for RESTful data PUT. Future data sets may also be addressed by host name and port number for TCP streaming, or by host name and landing zone directory for SFTP transfer of bulk files. + +* R-xxxxx The VNF **SHOULD** use REST using HTTPS delivery of plain text JSON for moderate sized asynchronous data sets, and for high volume data sets when feasible. +* R-xxxxx The VNF **MUST** have the capability of maintaining a primary and backup DNS name (URL) for connecting to ONAP collectors, with the ability to switch between addresses based on conditions defined by policy such as time-outs, and buffering to store messages until they can be delivered. At its discretion, the service provider may choose to populate only one collector address for a VNF. In this case, the network will promptly resolve connectivity problems caused by a collector or network failure transparently to the VNF. +* R-xxxxx The VNF **MUST** be configured with initial address(es) to use at deployment time. After that the address(es) may be changed through ONAP-defined policies delivered from ONAP to the VNF using PUTs to a RESTful API, in the same way that other controls over data reporting will be controlled by policy. +* R-xxxxx The VNF **MAY** use other options which are expected to include + - REST delivery of binary encoded data sets. + - TCP for high volume streaming asynchronous data sets and for other high volume data sets. TCP delivery can be used for either JSON or binary encoded data sets. + - SFTP for asynchronous bulk files, such as bulk files that contain large volumes of data collected over a long time interval or data collected across many VNFs. This is not preferred. Preferred is to reorganize the data into more frequent or more focused data sets, and deliver these by REST or TCP as appropriate. + - REST for synchronous data, using RESTCONF (e.g., for VNF state polling). +* R-xxxxx The VNF **MUST**, by ONAP Policy, provide the ONAP addresses as data destinations for each VNF, and may be changed by Policy while the VNF is in operation. We expect the VNF to be capable of redirecting traffic to changed destinations with no loss of data, for example from one REST URL to another, or from one TCP host and port to another. + +**Asynchronous and Synchronous Data Delivery** + +* R-xxxxx The VNF **MUST** deliver asynchronous data as data becomes available, or according to the configured frequency. +* R-xxxxx The VNF **MUST** must encode the delivered data using JSON or Avro, addressed and delivered as described in the previous paragraphs. +* R-xxxxx The VNF **MUST** respond to data requests from ONAP as soon as those requests are received, as a synchronous response. +* R-xxxxx The VNF **MUST** use the RESTCONF/NETCONF framework used by the ONAP configuration subsystem for synchronous communication. +* R-xxxxx The VNF **MUST** use the YANG configuration models and RESTCONF (https://tools.ietf.org/html/draft-ietf-netconf-restconf-09#page-46). +* R-xxxxx The VNF **MUST** respond with content encoded in JSON, as described in the RESTCONF specification. This way the encoding of a synchronous communication will be consistent with Avro. +* R-xxxxx The VNF **MUST** respond to an ONAP request to deliver the current data for any of the record types defined in Section 8.d “Data Model for Event Records” by returning the requested record, populated with the current field values. (Currently the defined record types include the common header record, technology independent records such as Fault, Heartbeat, State Change, Syslog, and technology specific records such as Mobile Flow, Signaling and Voice Quality records. Additional record types will be added in the future as they are standardized and become available.) +* R-xxxxx The VNF **MUST** respond to an ONAP request to deliver granular data on device or subsystem status or performance, referencing the YANG configuration model for the VNF by returning the requested data elements. +* R-xxxxx The VNF **SHOULD** use “Modeling JSON text with YANG”, https://trac.tools.ietf.org/id/draft-lhotka-netmod-yang-json-00.html, If YANG models need to be translated to and from JSON. YANG configuration and content can be represented via JSON, consistent with Avro, as described in “Encoding and Serialization” section. + +**Security** + +* R-xxxxx The VNF **MUST** support secure connections and transports. +* R-xxxxx The VNF **MUST** control access to ONAP and to VNFs, and creation of connections, through secure credentials, log-on and exchange mechanisms. +* R-xxxxx The VNF **MUST** carry data in motion only over secure connections. +* R-xxxxx The VNF **MUST** encrypt any content containing Sensitive Personal Information (SPI) or certain proprietary data, in addition to applying the regular procedures for securing access and delivery. Data Model for Event Records ----------------------------- |