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cl @startuml
title vFW Closed Loop
participant vPG
participant vFW
participant vSN
vPG -> vFW : traffic
vFW -> vSN : traffic sink
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note left: vPG automatically \nincreases traffic based on script
vFW -> DCAE : VES Telemetry
DCAE -> Policy : Threhold Crossing (High)
Policy -> Policy : pattern-match-replace vFW to vPG data
Policy -> APPC : ModifyConfig (lower PG traffic)
APPC -> vPG : Netconf modify config
note right : reduce number of traffic streams
vPG -> vFW : lower traffic
vFW -> DCAE : VES Telemetry
DCAE -> Policy : Event cleared (lower traffic)
@enduml
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1.4 Close Loop vDNS
This flow has the APPC to AAI query which moves the query from Policy to APPC.
There are no changes in the vDNS flow for R1. Originally we looked at moving the query from Policy to APPC but there were design details on executing the dnsscaling API call and whether APPC should call SO or MultiVIM directly that were not able to work out in time for R1. So we will continue with the original flow.
vDNS Flow (R1)
Image Added
Future Flow to be considered (After R1)
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@startuml
title vDNS Closed Loop
participant vPG
participant vLB
participant vDNS1
participant vDNS2
vPG -> vLB : traffic (high)
vLB -> vDNS1 : traffic sink
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note left: vPG automatically \nincreases traffic based on script
vLB -> DCAE : VES Telemetry (Traffic/vDNS)
DCAE -> Policy : Threhold Crossing (High)
Policy -> APPC: Scale VNF
APPC -> AAI : Named Query to map vLB to dnsscaling data
APPC -> SO : dnsscaling instantiate
SO -> AAI : inventory update
SO -> SDNC : Generic VNF API\n(reserved)
SO -> Multi_VIM: dnsscaling Heat template + ENV file
Multi_VIM -> OS_Heat : dnsscaling Heat template + ENV file
OS_Heat -> KVM : vDNS Infrastructure instantiation
KVM -> vDNS2 : Nova/Neutron Instantiation
KVM -> OS_Heat : complete
OS_Heat -> Multi_VIM : complete
Multi_VIM -> SO : complete
note right : SO may poll for completion
SO -> SDNC: Generic VNF API\n(activated)
note right : on failure from Openstack SO issues rollback to SDNC
SDNC -> AAI : L3 Network resource update
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note right : Alternative with TOSCA based dnsscaling
APPC -> AAI : inventory update
APPC -> SDNC : Generic VNF API\n(reserved)
APPC -> Multi_VIM : scale out request (Need to confirm since vFW/vDNS do not have VNFM)
Multi_VIM -> OS_Heat : dnsscaling Heat template + ENV file
OS_Heat -> KVM : vDNS Infrastructure instantiation
KVM -> vDNS2 : Nova/Neutron Instantiation
KVM -> OS_Heat : complete
OS_Heat -> Multi_VIM : complete
Multi_VIM -> APPC : complete
note right : APPC may poll for completion
APPC -> SDNC: Generic VNF API\n(activated)
note right : on failure from Openstack APPC issues rollback to SDNC
SDNC -> AAI : L3 Network resource update
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vLB -> DCAE : VES Telemetry
DCAE -> Policy : Event cleared (lower traffic)
@enduml |
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