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The method for the VES subscription/un-subscription must be performed via NetConf, because VES itself does not provide such function. The MnS Consumer will use the NetConf interface for such an operation.
Figure
PlantUml
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'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
' Copyright 2019 highstreet technologies GmbH
' Licensed under the Apache License, Version 2.0 (the "License");
' you may not use this file except in compliance with the License.
' You may obtain a copy of the License at
'
' http://www.apache.org/licenses/LICENSE-2.0
'
' Unless required by applicable law or agreed to in writing, software
' distributed under the License is distributed on an "AS IS" BASIS,
' WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
' See the License for the specific language governing permissions and
' limitations under the License.
'
' Author: martin.skorupski@highstreet-technologies.com
@startuml
' Diagram
title
O-RAN-SC
O1-Interface: VES Subscription architecture
end title
node "\nManagement-Service (MnS) Consumer\nOAMController" #8064A2 {
interface "TLS/HTTP" as http
[VES Server] -down-> http: provides
[NetConf Client] as ncc
}
node "\nManagement-Service (MnS) Provider\nManagedElement" #ED7D31 {
interface "TLS/NetConf" as nc
[NetConf Server] -up-> nc: provides
[VES Client] .up.> http: <font color=#222222>use
[VES Client] -[hidden]left- [NetConf Server]
}
ncc .down.> nc: <font color=#222222>use
' End Diagram
' Format
header
<b><font color=#8888ff>License</font></b>
<b><font color=#8888ff>Apache 2.0</font></b>
end header
'caption "\n UML Formatting"
right footer
VES Subscription
Thanks to plantUml!
2019-07-16 | o-ran-sc.org
end footer
skinparam backgroundColor #fefefe
skinparam backgroundColor #fefefe
'skinparam handwritten true
skinparam roundcorner 15
skinparam componentStyle uml2
skinparam component {
BorderColor #666666
BackgroundColor #fefefe
}
skinparam interface {
BorderColor #666666
BackgroundColor #fefefe
FontColor #fefefe
}
skinparam databaseBorderColor #666666
skinparam databaseBackgroundColor #fefefe
skinparam databaseFontColor #666666
skinparam node {
FontColor #ffffff
}
skinparam sequence {
MessageAlign left
ArrowColor #fefefe
ArrowFontColor #fefefe
ArrowThickness 2.5
ActorBorderColor #666666
LifeLineBorderColor #666666
LifeLineBackgroundColor #eeeeee
BoxBorderColor #666666
GroupBorderColor #666666
GroupBackgroundColor #eeeeee
ParticipantBorderColor #666666
ParticipantBackgroundColor #ffffdd
'ParticipantFontName Impact
'ParticipantFontSize 17
ParticipantFontColor #666666
ActorBackgroundColor #ffffdd
'ActorFontColor DeepSkyBlue
'ActorFontSize 17
'ActorFontName Aapex
}
@enduml
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Design guidelines
- Each NetConf session should be terminated as soon as possible. Therefore any solution requiring a permanent NetConf session (e.g. for NetConf Notification) should be avoided.
(TODO: add here the reasons for such requirement/expectation. It may have something to do with avoiding TCP connection for better scale. However, for the required event streaming functionality, a permanent session is necessary. To be continued) - The NetConf client should be informed about the status of the VES connection. In the case of misconfiguration, alarm events can not be sent to the MnS Consumer (alarm blindness). The only channel to troubleshoot such situation is via NetConf.
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