From 67d3b2a44d49dd2c4a1b2f722849f57432787137 Mon Sep 17 00:00:00 2001 From: Jan Gelety Date: Mon, 11 Jan 2021 02:34:17 +0100 Subject: Report: add geneve to perf release notes Change-Id: I0473bda59edf874119a474fb2e84177e19f58d02 Signed-off-by: Jan Gelety --- docs/report/introduction/methodology_geneve.rst | 73 +++++++++++++++++++++++++ 1 file changed, 73 insertions(+) create mode 100644 docs/report/introduction/methodology_geneve.rst (limited to 'docs/report/introduction') diff --git a/docs/report/introduction/methodology_geneve.rst b/docs/report/introduction/methodology_geneve.rst new file mode 100644 index 0000000000..1ae8bfaa7a --- /dev/null +++ b/docs/report/introduction/methodology_geneve.rst @@ -0,0 +1,73 @@ +.. _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 | ++----------------+-------------+ -- cgit 1.2.3-korg