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Olaf Bergmann
mininet
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ead9f830
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ead9f830
authored
12 years ago
by
Bob Lantz
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Mininet: Rapid Prototyping for Software Defined Networks
========================================================
=========================================================
Mininet: Rapid Prototyping for Software Defined Networks
========================================================
=
The best way to emulate almost any network on your laptop!
...
...
@@ -8,27 +8,30 @@ Version 2.0.0rc1
### What is Mininet?
Mininet emulates a complete network of hosts, links, and switches on a single
machine. To create a sample two-host, one-switch network, just run:
Mininet emulates a complete network of hosts, links, and switches
on a single machine. To create a sample two-host, one-switch network,
just run:
sudo mn
Mininet is useful for interactive development, testing, and demos,
especially
those using OpenFlow and SDN. OpenFlow-based network
controllers prototyped in
Mininet can usually be transferred to
hardware with minimal changes for full
line-rate execution.
Mininet is useful for interactive development, testing, and demos,
especially
those using OpenFlow and SDN. OpenFlow-based network
controllers prototyped in
Mininet can usually be transferred to
hardware with minimal changes for full
line-rate execution.
### How does it work?
Mininet creates virtual networks using process-based virtualization and network
namespaces - features that are available in recent Linux kernels. In Mininet,
hosts are emulated as bash processes running in a network namespace, so any
code that would normally run on a Linux server (like a web server or client
program) should run just fine within a Mininet "Host". The Mininet "Host" will
have its own private network interface and can only see its own processes.
Switches in Mininet are software-based switches like Open vSwitch or the
OpenFlow reference switch. Links are virtual ethernet pairs, which live in the
Linux kernel and connect our emulated switches to emulated hosts (processes).
Mininet creates virtual networks using process-based virtualization
and network namespaces - features that are available in recent Linux
kernels. In Mininet, hosts are emulated as bash processes running in
a network namespace, so any code that would normally run on a Linux
server (like a web server or client program) should run just fine
within a Mininet "Host". The Mininet "Host" will have its own private
network interface and can only see its own processes. Switches in
Mininet are software-based switches like Open vSwitch or the OpenFlow
reference switch. Links are virtual ethernet pairs, which live in the
Linux kernel and connect our emulated switches to emulated hosts
(processes).
### Features
...
...
@@ -36,30 +39,32 @@ Mininet includes:
*
A command-line launcher (
`mn`
) to instantiate networks.
*
A handy Python API for creating networks of varying sizes and topologies.
*
A handy Python API for creating networks of varying sizes and
topologies.
*
Examples (in the
`examples/`
directory) to help you get started.
*
Full API documentation via Python
`help()`
docstrings, as well as the ability
to generate PDF/HTML documentation with
`make doc`
.
*
Full API documentation via Python
`help()`
docstrings, as well as
the ability to generate PDF/HTML documentation with
`make doc`
.
*
Parametrized topologies (
`Topo`
subclasses) using the Mininet
object. For example, a tree network may be created with the
command:
*
Parametrized topologies (
`Topo`
subclasses) using the Mininet object. For
example, a tree network may be created with the command:
`mn --topo tree,depth=2,fanout=3`
*
A command-line interface (
`CLI`
class) which provides useful
diagnostic
commands (like
`iperf`
and
`ping`
), as well as the
ability to run a command
to a node. For example,
*
A command-line interface (
`CLI`
class) which provides useful
diagnostic
commands (like
`iperf`
and
`ping`
), as well as the
ability to run a command
to a node. For example,
`mininet> h11 ifconfig -a`
tells host h11 to run the command
`ifconfig -a`
*
A 'cleanup' command to get rid of junk (interfaces, processes, files
in
/tmp, etc.) which might be left around by Mininet or Linux. Try
this if
things stop working!
*
A 'cleanup' command to get rid of junk (interfaces, processes, files
in
/tmp, etc.) which might be left around by Mininet or Linux. Try
this if
things stop working!
`mn -c`
### New features in 2.0.0
...
...
@@ -83,9 +88,9 @@ a number of enhancements and new features, including:
*
Man pages for the
`mn`
and
`mnexec`
utilities.
[Since the API (most notably the topology) has changed, existing code
that
runs in Mininet 1.0 will need to be changed to run with Mininet
2.0. This
is the primary reason for the major version number change.]
[Since the API (most notably the topology) has changed, existing code
that
runs in Mininet 1.0 will need to be changed to run with Mininet
2.
0. This
is the primary reason for the major version number change.]
### Installation
...
...
@@ -93,16 +98,17 @@ See `INSTALL` for installation instructions and details.
### Documentation
In addition to the API documentation (
`make doc`
) much useful information,
including a Mininet walkthrough and an introduction to the Python API is
available on the
[
Mininet Web Site
](
http://openflow.org/mininet
)
. There is
also a wiki which you are encouraged to read and to contribute to,
particularly the Frequently Asked Questions (FAQ.)
In addition to the API documentation (
`make doc`
) much useful
information, including a Mininet walkthrough and an introduction
to the Python API is available on the
[
Mininet Web Site
](
http://openflow.org/mininet
)
.
There is also a wiki which you are encouraged to read and to
contribute to, particularly the Frequently Asked Questions (FAQ.)
### Support
Mininet community-supported. We encourage you to
join the
Mininet mailing list,
`mininet-discuss`
at:
Mininet
is
community-supported. We encourage you to
join the
Mininet mailing list,
`mininet-discuss`
at:
<https://mailman.stanford.edu/mailman/listinfo/mininet-discuss>
...
...
@@ -113,8 +119,8 @@ Mininet is an open-source project and is currently hosted at
examine it, modify it, and submit bug reports, bug fixes, feature
requests, and enhancements!
Best wishes, and we look forward to seeing what you can do with
Mininet
to change the networking world!
Best wishes, and we look forward to seeing what you can do with
Mininet
to change the networking world!
### Credits
...
...
@@ -124,4 +130,3 @@ The Mininet Team:
*
Brandon Heller
*
Nikhil Handigol
*
Vimal Jeyakumar
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