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author | Ryota Mibu <r-mibu@cq.jp.nec.com> | 2017-02-17 04:36:05 +0000 |
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committer | Gerrit Code Review <gerrit@opnfv.org> | 2017-02-17 04:36:05 +0000 |
commit | f3ab498aaddb27f6f598a84e2dbe0203ced6d666 (patch) | |
tree | fc7b2be2681db87adc1eb935e6fdcc93a8bc1645 /docs/development/requirements/01-intro.rst | |
parent | 5d9c24fd28bcc02243306a8c96d0c68809523343 (diff) | |
parent | d0b22e1d856cf8f78e152dfb6c150e001e03dd52 (diff) |
Merge "Update docs structure according to new guidelines in https://wiki.opnfv.org/display/DOC"
Diffstat (limited to 'docs/development/requirements/01-intro.rst')
-rw-r--r-- | docs/development/requirements/01-intro.rst | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/docs/development/requirements/01-intro.rst b/docs/development/requirements/01-intro.rst new file mode 100644 index 00000000..ed666cd1 --- /dev/null +++ b/docs/development/requirements/01-intro.rst @@ -0,0 +1,51 @@ +.. This work is licensed under a Creative Commons Attribution 4.0 International License. +.. http://creativecommons.org/licenses/by/4.0 + +Introduction +============ + +The goal of this project is to build an NFVI fault management and maintenance +framework supporting high availability of the Network Services on top of the +virtualized infrastructure. The key feature is immediate notification of +unavailability of virtualized resources from VIM, to support failure recovery, +or failure avoidance of VNFs running on them. Requirement survey and development +of missing features in NFVI and VIM are in scope of this project in order to +fulfil requirements for fault management and maintenance in NFV. + +The purpose of this requirement project is to clarify the necessary features of +NFVI fault management, and maintenance, identify missing features in the current +OpenSource implementations, provide a potential implementation architecture and +plan, provide implementation guidelines in relevant upstream projects to realize +those missing features, and define the VIM northbound interfaces necessary to +perform the task of NFVI fault management, and maintenance in alignment with +ETSI NFV [ENFV]_. + +Problem description +------------------- + +A Virtualized Infrastructure Manager (VIM), e.g. OpenStack [OPSK]_, cannot +detect certain Network Functions Virtualization Infrastructure (NFVI) faults. +This feature is necessary to detect the faults and notify the Consumer in order +to ensure the proper functioning of EPC VNFs like MME and S/P-GW. + +* EPC VNFs are often in active standby (ACT-STBY) configuration and need to + switch from STBY mode to ACT mode as soon as relevant faults are detected in + the active (ACT) VNF. + +* NFVI encompasses all elements building up the environment in which VNFs are + deployed, e.g., Physical Machines, Hypervisors, Storage, and Network elements. + +In addition, VIM, e.g. OpenStack, needs to receive maintenance instructions from +the Consumer, i.e. the operator/administrator of the VNF. + +* Change the state of certain Physical Machines (PMs), e.g. empty the PM, so + that maintenance work can be performed at these machines. + +Note: Although fault management and maintenance are different operations in NFV, +both are considered as part of this project as -- except for the trigger -- they +share a very similar work and message flow. Hence, from implementation +perspective, these two are kept together in the Doctor project because of this +high degree of similarity. + +.. + vim: set tabstop=4 expandtab textwidth=80: |