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.. _network-stack:

=============
Network Stack
=============

This section describes a little about the FD.io network stack and describes some benefits:

* Layer 2 - 4 Network Stack

  * Fast lookup tables for routes, bridge entries
  * Arbitrary n-tuple classifiers 
  * Control Plane, Traffic Management and Overlays

 
* `Linux <https://en.wikipedia.org/wiki/Linux>`_ and `FreeBSD <https://en.wikipedia.org/wiki/FreeBSD>`_ support

  * Support for standard Operating System Interfaces such as AF_Packet, Tun/Tap & Netmap.

* Network and cryptographic hardware support with `DPDK <https://www.dpdk.org/>`_.
* Container and Virtualization support

  * Para-virtualized interfaces; Vhost and Virtio
  * Network Adapters over PCI passthrough
  * Native container interfaces; MemIF
  
* Host Stack
* Universal Data Plane: one code base, for many use cases
 
  * Discrete appliances; such as `Routers <https://en.wikipedia.org/wiki/Router_(computing)>`_ and `Switches <https://en.wikipedia.org/wiki/Network_switch>`_.
  * `Cloud Infrastructure and Virtual Network Functions <https://en.wikipedia.org/wiki/Network_function_virtualization>`_
  * `Cloud Native Infrastructure <https://www.cncf.io/>`_
  * The same binary package for all use cases. 

* Out of the box production quality, with thanks to `CSIT <https://wiki.fd.io/view/CSIT#Start_Here>`_. 

For more information, please see :ref:`featuresbyrelease` for the complete list.

For more on the TCP Host Stack press next.
href='#n64'>64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106
# Copyright (c) 2017 Cisco and/or its affiliates.
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
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#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
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*** Settings ***
| Library | resources.libraries.python.honeycomb.Routing.RoutingKeywords
| Library | resources.libraries.python.Trace
| Documentation | Keywords used to test SLAAC using Honeycomb.

*** Keywords ***
| Honeycomb Configures SLAAC
| | [Documentation] | Uses Honeycomb API to configure SLAAC on the specified\
| | ... | interface.
| | ...
| | ... | *Arguments:*
| | ... | - node - information about a DUT node. Type: dictionary
| | ... | - interface - name of an interface on the node. Type: string
| | ... | - slaac_data - data needed to configure SLAAC. Type: dictionary
| | ...
| | ... | *Example:*
| | ...
| | ... | \| Honeycomb Configures SLAAC \| ${node} \| ${interface} \
| | ... | \| ${slaac_data} \|
| | ...
| | [Arguments] | ${node} | ${interface} | ${slaac_data}
| | Configure interface SLAAC
| | ... | ${node} | ${interface} | ${slaac_data}

| SLAAC Operational Data From Honeycomb Should Be
| | [Documentation] | Retrieves SLAAC operational data and verifies that\
| | ... | SLAAC is configured with the provided interfaces.
| | ...
| | ... | *Arguments:*
| | ... | - node - information about a DUT node. Type: dictionary
| | ... | - interface - name of an interface on the node. Type: string
| | ... | - slaac_data - data to compare configuration SLAAC with.\
| | ... | Type: dictionary
| | ...
| | ... | *Example:*
| | ...
| | ... | \| SLAAC Operational Data From Honeycomb Should Be \
| | ... | \| ${node} \| ${interface} \| ${slaac_data} \|
| | ...
| | [Arguments] | ${node} | ${interface} | ${slaac_data}
| | ${data}= | Get interface SLAAC oper data | ${node} | ${interface}
| | Dictionaries should be equal | ${data} | ${slaac_data}

| SLAAC Operational Data From Honeycomb Should Be empty
| | [Documentation] | Checks whether SLAAC configuration from Honeycomb \
| | ... | is empty.
| | ...
| | ... | *Arguments:*
| | ... | - node - Information about a DUT node. Type: dictionary
| | ... | - interface - name of an interface on the node. Type: string
| | ...
| | ... | *Example:*
| | ...
| | ... | \| SLAAC Operational Data From Honeycomb Should Be empty \
| | ... | \| ${node} \| ${interface} \|
| | ...
| | [Arguments] | ${node} | ${interface}
| | Run keyword and expect error | HoneycombError*404*
| | ... | Get interface SLAAC oper data | ${node} | ${interface}

| Honeycomb removes SLAAC configuration
| | [Documentation] | Uses Honeycomb API to remove SLAAC confirugation\
| | ... | from the specified interface.
| | ...
| | ... | *Arguments:*
| | ... | - node - information about a DUT node. Type: dictionary
| | ... | - interface - name of an interface on the node. Type: string
| | ...
| | ... | *Example:*
| | ...
| | ... | \| Honeycomb removes SLAAC configuration \
| | ... | \| ${nodes['DUT1']} \| GigabitEthernet0/8/0 \|
| | ...
| | [Arguments] | ${node} | ${interface}
| | Configure interface SLAAC | ${node} | ${interface}

| SLAAC test teardown
| | [Documentation] | Uses Honeycomb API to remove SLAAC confirugation\
| | ... | and reset interface state.
| | ...
| | ... | *Arguments:*
| | ... | - node - information about a DUT node. Type: dictionary
| | ... | - interface - name of an interface on the node. Type: string
| | ...
| | ... | *Example:*
| | ...
| | ... | \| Honeycomb removes SLAAC configuration \
| | ... | \| ${nodes['DUT1']} \| GigabitEthernet0/8/0 \|
| | ...
| | [Arguments] | ${node} | ${interface}
| | Honeycomb removes SLAAC configuration | ${node} | ${interface}
| | And InterfaceAPI.Set Interface State | ${node} | ${interface} | down
| | Honeycomb removes interface ipv6 addresses | ${node} | ${interface}