C-Docs: New structure

[csit.git] / docs / report / introduction / methodology_geneve.rst

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-.. _geneve_methodology:
-
-Generic Network Virtualization Encapsulation
---------------------------------------------
-
-GENEVE Prefix Bindings
-^^^^^^^^^^^^^^^^^^^^^^
-
-GENEVE prefix bindings should be representative to target applications, where
-a packet flows of particular set of IPv4 addresses (L3 underlay network) is
-routed via dedicated GENEVE interface by building an L2 overlay.
-
-Private address ranges to be used in tests:
-
-- East hosts ip address range: 10.0.1.0 - 10.127.255.255 (10.0/9 prefix)
-
-  - Total of 2^23 - 256 (8 388 352) of usable IPv4 addresses
-  - Usable in tests for up to 32 767 GENEVE tunnels (IPv4 underlay networks)
-
-- West hosts ip address range: 10.128.1.0 - 10.255.255.255 (10.128/9 prefix)
-
-  - Total of 2^23 - 256 (8 388 352) of usable IPv4 addresses
-  - Usable in tests for up to 32 767 GENEVE tunnels (IPv4 underlay networks)
-
-GENEVE Tunnel Scale
-~~~~~~~~~~~~~~~~~~~
-
-If N is a number of GENEVE tunnels (and IPv4 underlay networks) then TG sends
-256 packet flows in every of N different sets:
-
-- i = 1,2,3, ... N - GENEVE tunnel index
-
-- East-West direction: GENEVE encapsulated packets
-
-  - Outer IP header:
-
-    - src ip: 1.1.1.1
-
-    - dst ip: 1.1.1.2
-
-  - GENEVE header:
-
-    - vni: i
-
-  - Inner IP header:
-
-    - src_ip_range(i) = 10.(0 + rounddown(i/255)).(modulo(i/255)).(0-to-255)
-
-    - dst_ip_range(i) = 10.(128 + rounddown(i/255)).(modulo(i/255)).(0-to-255)
-
-- West-East direction: non-encapsulated packets
-
-  - IP header:
-
-    - src_ip_range(i) = 10.(128 + rounddown(i/255)).(modulo(i/255)).(0-to-255)
-
-    - dst_ip_range(i) = 10.(0 + rounddown(i/255)).(modulo(i/255)).(0-to-255)
-
-+----------------+-------------+
-| geneve-tunnels | total-flows |
-+================+=============+
-|              1 |         256 |
-+----------------+-------------+
-|              4 |       1 024 |
-+----------------+-------------+
-|             16 |       4 096 |
-+----------------+-------------+
-|             64 |      16 384 |
-+----------------+-------------+
-|            256 |      65 536 |
-+----------------+-------------+
-|          1 024 |     262 144 |
-+----------------+-------------+