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Diffstat (limited to 'docs/testing/user/userguide')
| -rw-r--r-- | docs/testing/user/userguide/advanced.rst | 39 | ||||
| -rw-r--r-- | docs/testing/user/userguide/extchains.rst | 77 | ||||
| -rw-r--r-- | docs/testing/user/userguide/images/nfvbench-ext-multi-vlans.png | bin | 0 -> 120315 bytes | |||
| -rw-r--r-- | docs/testing/user/userguide/images/nfvbench-ext-shared.png | bin | 0 -> 100743 bytes | |||
| -rw-r--r-- | docs/testing/user/userguide/index.rst | 4 | ||||
| -rw-r--r-- | docs/testing/user/userguide/readme.rst | 13 |
6 files changed, 84 insertions, 49 deletions
diff --git a/docs/testing/user/userguide/advanced.rst b/docs/testing/user/userguide/advanced.rst index 02c7fce..1d2ac36 100644 --- a/docs/testing/user/userguide/advanced.rst +++ b/docs/testing/user/userguide/advanced.rst @@ -201,44 +201,7 @@ For example to run NFVbench with 3 PVP chains: It is not necessary to specify the service chain type (-sc) because PVP is set as default. The PVP service chains will have 3 VMs in 3 chains with this configuration. If ``-sc PVVP`` is specified instead, there would be 6 VMs in 3 chains as this service chain has 2 VMs per chain. -Both **single run** or **NDR/PDR** can be run as multichain. Running multichain is a scenario closer to a real life situation than runs with a single chain. - - -External Chain --------------- - -NFVbench can measure the performance of 1 or more L3 service chains that are setup externally. Instead of being setup by NFVbench, -the complete environment (VMs and networks) has to be setup prior to running NFVbench. - -Each external chain is made of 1 or more VNFs and has exactly 2 end network interfaces (left and right network interfaces) that are connected to 2 neutron networks (left and right networks). -The internal composition of a multi-VNF service chain can be arbitrary (usually linear) as far as NFVbench is concerned, -the only requirement is that the service chain can route L3 packets properly between the left and right networks. - -To run NFVbench on such external service chains: - -- explicitly tell NFVbench to use external service chain by adding ``-sc EXT`` or ``--service-chain EXT`` to NFVbench CLI options -- specify the number of external chains using the ``-scc`` option (defaults to 1 chain) -- specify the 2 end point networks of your environment in ``external_networks`` inside the config file. - - The two networks specified there have to exist in Neutron and will be used as the end point networks by NFVbench ('napa' and 'marin' in the diagram below) -- specify the router gateway IPs for the external service chains (1.1.0.2 and 2.2.0.2) -- specify the traffic generator gateway IPs for the external service chains (1.1.0.102 and 2.2.0.102 in diagram below) -- specify the packet source and destination IPs for the virtual devices that are simulated (10.0.0.0/8 and 20.0.0.0/8) - - -.. image:: images/extchain-config.png - -L3 routing must be enabled in the VNF and configured to: - -- reply to ARP requests to its public IP addresses on both left and right networks -- route packets from each set of remote devices toward the appropriate dest gateway IP in the traffic generator using 2 static routes (as illustrated in the diagram) - -Upon start, NFVbench will: -- first retrieve the properties of the left and right networks using Neutron APIs, -- extract the underlying network ID (typically VLAN segmentation ID), -- generate packets with the proper VLAN ID and measure traffic. - -Note that in the case of multiple chains, all chains end interfaces must be connected to the same two left and right networks. -The traffic will be load balanced across the corresponding gateway IP of these external service chains. +Both **single run** or **NDR/PDR** can be run as multichain. Runnin multichain is a scenario closer to a real life situation than runs with a single chain. Multiflow diff --git a/docs/testing/user/userguide/extchains.rst b/docs/testing/user/userguide/extchains.rst new file mode 100644 index 0000000..f7c0e51 --- /dev/null +++ b/docs/testing/user/userguide/extchains.rst @@ -0,0 +1,77 @@ +.. This work is licensed under a Creative Commons Attribution 4.0 International License. +.. SPDX-License-Identifier: CC-BY-4.0 +.. (c) Cisco Systems, Inc + +=============== +External Chains +=============== + +NFVbench can measure the performance of 1 or more L3 service chains that are setup externally using OpenStack or without OpenStack. +Instead of being setup by NFVbench, the complete environment (VNFs and networks) must be setup prior to running NFVbench. + +Each external chain is made of 1 or more VNFs and has exactly 2 edge network interfaces (left and right network interfaces) +that are connected to 2 edge networks (left and right networks). +The 2 edge networks for each chain can either be shared across all chains or can be independent. + +The internal composition of a multi-VNF service chain can be arbitrary (usually linear) as far as NFVbench is concerned, +the only requirement is that the service chain can route L3 packets properly between the left and right networks. + +The network topology of the service chains is defined by the "service_chain_shared_net" option in the +NFVbench configuration file. + + +Shared Edge Networks +-------------------- + +This option is defined when "service_chain_shared_net" is set to true. +All chains must share the same 2 edge networks and the VNF gateway IP addresses on each edge +must all belong to the same subnet. + +.. image:: images/nfvbench-ext-shared.png + +The main advantage of this mode is that only 2 network segments are needed to support an arbitrary number of chains. + + +Multi-VLAN Edge Networks +------------------------ + +This option is defined when "service_chain_shared_net" is set to false (default). +Each chain has its own dedicated left and right network and there is no inter-chain constraint +on the VNF IP addresses since they all belong to different network segments. + +.. image:: images/nfvbench-ext-multi-vlans.png + +The advantage of this mode is that the configuration of the VNFs can be made identical (same +gateway IP addresses, same static routes). +However this mode requires 2 network segments per chain. + + +Detailed Example +---------------- +To run NFVbench on an external service chains using shared edge networks: + +- tell NFVbench to use external service chain by adding "-sc EXT" or "--service-chain EXT" to NFVbench CLI options +- specify the number of external chains using the "-scc" option (defaults to 1 chain) +- if OpenStack is used: + - specify the name of the 2 edge networks in "external_networks" in the NFVbench configuration file + - The two networks specified have to exist in Neutron ('napa' and 'marin' in the diagram below) +- if OpenStack is not used: + - specify the VLAN id to use for the 2 edge networks in "vlans" in the NFVbench configuration file +- specify the VNF gateway IPs for the external service chains (1.1.0.2 and 2.2.0.2) +- specify the traffic generator gateway IPs for the external service chains (1.1.0.102 and 2.2.0.102 in diagram below) +- specify the packet source and destination IPs for the virtual devices that are simulated (10.0.0.0/8 and 20.0.0.0/8) + +.. image:: images/extchain-config.png + +L3 routing must be enabled in the VNF and configured to: + +- reply to ARP requests to its public IP addresses on both left and right networks +- route packets from each set of remote devices toward the appropriate dest gateway IP in the traffic generator using 2 static routes (as illustrated in the diagram) + +Upon start, NFVbench will: +- first retrieve the properties of the left and right networks using Neutron APIs, +- extract the underlying network ID (typically VLAN segmentation ID), +- generate packets with the proper VLAN ID and measure traffic. + +Note that in the case of multiple chains, all chains end interfaces must be connected to the same two left and right networks. +The traffic will be load balanced across the corresponding gateway IP of these external service chains. diff --git a/docs/testing/user/userguide/images/nfvbench-ext-multi-vlans.png b/docs/testing/user/userguide/images/nfvbench-ext-multi-vlans.png Binary files differnew file mode 100644 index 0000000..2ef2300 --- /dev/null +++ b/docs/testing/user/userguide/images/nfvbench-ext-multi-vlans.png diff --git a/docs/testing/user/userguide/images/nfvbench-ext-shared.png b/docs/testing/user/userguide/images/nfvbench-ext-shared.png Binary files differnew file mode 100644 index 0000000..efe1c71 --- /dev/null +++ b/docs/testing/user/userguide/images/nfvbench-ext-shared.png diff --git a/docs/testing/user/userguide/index.rst b/docs/testing/user/userguide/index.rst index c7c57c8..e83912f 100644 --- a/docs/testing/user/userguide/index.rst +++ b/docs/testing/user/userguide/index.rst @@ -24,10 +24,8 @@ Table of Content installation examples advanced + extchains fluentd sriov server faq - - - diff --git a/docs/testing/user/userguide/readme.rst b/docs/testing/user/userguide/readme.rst index b437ff9..9915653 100644 --- a/docs/testing/user/userguide/readme.rst +++ b/docs/testing/user/userguide/readme.rst @@ -113,14 +113,10 @@ PVVP Packet Path ^^^^^^^^^^^^^^^^ This packet path represents a single service chain with 2 loopback VNFs in sequence and 3 Neutron networks. -The 2 VNFs can run on the same compute node (PVVP intra-node): +The 2 VNFs will only run on the same compute node (PVVP intra-node): .. image:: images/nfvbench-pvvp.png -or on different compute nodes (PVVP inter-node) based on a configuration option: - -.. image:: images/nfvbench-pvvp2.png - Multi-Chaining (N*PVP or N*PVVP) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -135,8 +131,9 @@ Example of multi-chaining with 2 concurrent PVP service chains: This innovative feature will allow to measure easily the performance of a fully loaded compute node running multiple service chains. -Multi-chaining is currently limited to 1 compute node (PVP or PVVP intra-node) or 2 compute nodes (for PVVP inter-node). -The 2 edge interfaces for all service chains will share the same 2 networks. +Multi-chaining is currently limited to 1 compute node (VMs run on the same compute node). +The 2 edge interfaces for all service chains can either share the same 2 networks or can use +dedicated networks (based on a configuration option). The total traffic will be split equally across all chains. @@ -195,4 +192,4 @@ NFVbench is agnostic of the virtual switch implementation and has been tested wi Limitations *********** NFVbench only supports VLAN with OpenStack. -NFVbench does not support VxLAN overlays. +VxLAN overlays is planned for a coming release. |
