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Diffstat (limited to 'requirements/03-arch.rst')
| -rw-r--r-- | requirements/03-arch.rst | 33 |
1 files changed, 19 insertions, 14 deletions
diff --git a/requirements/03-arch.rst b/requirements/03-arch.rst index c8fe320..8c4db91 100644 --- a/requirements/03-arch.rst +++ b/requirements/03-arch.rst @@ -6,15 +6,16 @@ Architecture Overview ===================== .. figure:: images/figure1.png + :name: figure1 :width: 90% Resource Reservation Architecture -Figure 1 shows the high level architecture for the resource reservation use -cases. Reserved resources are guaranteed for a given user/client for the period -expressed by start and end time. User/client represents the requestor and the -consequent consumer of the reserved resources and correspond to the NFVO or -VNFM in ETSI NFV terminology. +:numref:`figure1` shows the high level architecture for the resource +reservation use cases. Reserved resources are guaranteed for a given +user/client for the period expressed by start and end time. User/client +represents the requestor and the consequent consumer of the reserved +resources and correspond to the NFVO or VNFM in ETSI NFV terminology. Note: in this document only reservation requests from NFVO are considered. @@ -62,38 +63,42 @@ Resource Capacity Management ---------------------------- .. figure:: images/figure2.png + :name: figure2 :width: 90% Resource capacity management message flow: notification of capacity change -Figure 2 shows a high level flow for a use case of resource capacity +:numref:`figure2` shows a high level flow for a use case of resource capacity management. In this example, the VIM notifies the NFVO of capacity change after having received an event regarding a change in capacity (e.g. a fault notification) from the NFVI. The NFVO can also retrieve detailed capacity information using the Query Capacity Request interface operation. .. figure:: images/figure3.png + :name: figure3 :width: 90% Resource capacity management message flow: query of capacity density -Figure 3 shows a high level flow for another use case of resource capacity -management. In this example, the NFVO queries the VIM about the actual capacity -to instantiate a certain resource according to a certain template, for example -a VM according to a certain flavor. In this case the VIM responds with the -number of VMs that could be instantiated according to that flavor with the -currently available capacity. +:numref:`figure3` shows a high level flow for another use case of resource +capacity management. In this example, the NFVO queries the VIM about the +actual capacity to instantiate a certain resource according to a certain +template, for example a VM according to a certain flavor. In this case +the VIM responds with the number of VMs that could be instantiated according +to that flavor with the currently available capacity. Resource Reservation -------------------- .. figure:: images/figure4.png + :name: figure4 :width: 90% Resource reservation flow -Figure 4 shows a high level flow for a use case of resource reservation. The -main steps are: +:numref:`figure4` shows a high level flow for a use case of resource +reservation. +The main steps are: * The NFVO sends a resource reservation request to the VIM using the Create Resource Reservation Request interface operation. |