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diff --git a/docs/requirements/use_cases/l3vpn_ecmp.rst b/docs/requirements/use_cases/l3vpn_ecmp.rst new file mode 100644 index 0000000..c218179 --- /dev/null +++ b/docs/requirements/use_cases/l3vpn_ecmp.rst @@ -0,0 +1,57 @@ +.. This work is licensed under a Creative Commons Attribution 4.0 International License. +.. http://creativecommons.org/licenses/by/4.0 +.. (c) Bin Hu + +ECMP Load Splitting Case (Anycast) +---------------------------------- + +Description +~~~~~~~~~~~ + +There are 2 hosts (compute nodes). SDN Controller A and vRouter A are provided by +Vendor A, and run on host A. SDN Controller B and vRouter B are provided by +Vendor B, and run on host B. + +There is 1 tenant. Tenant 1 creates L3VPN Blue with subnet 10.1.1.0/24. + +The network topology is shown in :numref:`l3vpn-ecmp-figure`: + +.. figure:: images/l3vpn-ecmp.png + :name: l3vpn-ecmp-figure + :width: 100% + +In L3VPN Blue, VNF1.1 and VNF1.2 are spawned on host A, attached to subnet 10.1.1.0/24 +and assigned the same IP address 10.1.1.5. VNF1.3 is spawned on host B, attached to +subnet 10.1.1.0/24 and assigned the same IP addresses 10.1.1.5. VNF 2 and VNF 3 are spawned +on host A and B respectively, attached to subnet 10.1.1.0/24, and assigned different IP +addresses 10.1.1.6 and 10.1.1.3 respectively. + +Here, the Network VRF Policy Resource is ``ECMP/AnyCast``. Traffic to **Anycast 10.1.1.5** +can be load split from either WAN GW or another VM like G5. + + +Derrived Requirements +~~~~~~~~~~~~~~~~~~~~~ + - TBD + +Northbound API / Workflow ++++++++++++++++++++++++++ + - TBD + +Data model objects +++++++++++++++++++ + - TBD + +Orchestration ++++++++++++++ + - TBD + +Dependencies on compute services +++++++++++++++++++++++++++++++++ + - TBD + +Potential implementation +++++++++++++++++++++++++ + - TBD + + |