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Working a bit on text files. Removed netns.

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This commit is contained in:
Bob Lantz
2010-03-14 15:18:17 -07:00
parent bca38c997e
commit ed097b3b9c
3 changed files with 28 additions and 57 deletions
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INSTALL
+6 -8
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@@ -10,12 +10,12 @@ Preliminary Mininet Installation/Configuration Notes
This places the mininet package in /usr/lib/python-2.5/site-packages/, This places the mininet package in /usr/lib/python-2.5/site-packages/,
so that 'import mininet' will work. so that 'import mininet' will work.
- Installation is simplest with a distribution that includes a kernel - Mininet requires a kernel built with support for the CLONE_NETNS unshare
which supports the CLONE_NETNS unshare flag by default. Debian 5.0+ does flag by default.
(e.g. current debian-testing release); Ubuntu doesn't. If your kernel
doesn't support it, you will need to build and install a kernel that If your kernel doesn't support it, you will need to build and install a
does! If you are using OpenVSwitch, 2.6.33 works best. For the reference kernel that does! If you are using Open vSwitch, 2.6.33 works best. For
kernel switch, 2.6.30 is compatible. the reference kernel switch, 2.6.30 should be compatible.
- Mininet should probably be run either on a machine with - Mininet should probably be run either on a machine with
no other important processes, or on a virtual machine. no other important processes, or on a virtual machine.
@@ -62,5 +62,3 @@ Preliminary Mininet Installation/Configuration Notes
sudo sysctl -p sudo sysctl -p
--- ---
README
+22 -25
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@@ -3,7 +3,7 @@
aka aka
How to Squeeze a 1024-node OpenFlow Network onto your Laptop How to Squeeze a 1024-node OpenFlow Network onto your Laptop
(Extremely Experimental Development Version 0.1, December 2009) Development Release, March 2010
--- ---
@@ -15,52 +15,51 @@ datapath) are created as processes in separate network namespaces. This
allows a complete OpenFlow network to be simulated on top of a single allows a complete OpenFlow network to be simulated on top of a single
Linux kernel. Linux kernel.
Mininet provides a set of Python classes and functions which enable Although Mininet may be invoked directly from the command line, it also
creation of OpenFlow networks of varying sizes and topologies. incorporates a handy Python API, in the form of classes and functions
which enable creation of OpenFlow networks of varying sizes and topologies.
In order to run Mininet, you must have: In order to run Mininet, you must have:
* A Linux 2.6.26 or greater kernel compiled with network namespace support * A Linux 2.6.26 or greater kernel compiled with network namespace support
enabled. (debian-testing seems to have such a kernel, but it doesn't enabled (see INSTALL for additional information.)
work for compiling nox, unfortunately.) 2.6.33 or greater is recommended
for faster switch shutdown.
* The OpenFlow reference implementation (either the user or kernel * An OpenFlow implementation (either the reference user or kernel
datapath may be used, and the tun or ofdatapath kernel modules must be space implementations, or Open vSwitch.) Appropriate kernel modules
loaded, respectively) (e.g. tun and ofdatapath for the reference kernel implementation) must
be loaded.
* Python, bash, ping, iperf, etc. * Python, bash, ping, iperf, etc.
* Root privileges (required for network device access) * Root privileges (required for network device access)
* The netns program (included as netns.c), or an equivalent program
of the same name, installed in an appropriate path location
* mininet.py installed in an appropriate Python path location
Currently mininet includes: Currently mininet includes:
- A simple node infrastructure (Host, Switch, Controller classes) for - A simple node infrastructure (Host, Switch, Controller classes) for
creating virtual OpenFlow networks creating virtual OpenFlow networks
- A simple network infrastructure (class Network and its descendants - A simple network infrastructure (Mininet class) supporting parametrized
TreeNet, GridNet and LinearNet) for creating scalable topologies and topologies (Topo subclasses.) For example, a tree network may be created
running experiments (e.g. TreeNet(2,3).run(pingTest) ) with the command
- Some simple tests which can be run using someNetwork.run( test ) # mn --topo tree,depth=2,fanout==3
- A simple command-line interface which may be invoked on a network using - Basic tests, including connectivity (ping) and bandwidth (iperf)
.run( Cli ). It provides useful diagnostic commands, as well as the
ability to send a command to a node. For example, - A command-line interface (CLI class) which provides useful
diagnostic commands, as well as the ability to send a command to a
node. For example,
mininet> h11 ifconfig -a mininet> h11 ifconfig -a
tells host h11 to run the command 'ifconfig -a' tells host h11 to run the command 'ifconfig -a'
- A 'cleanup' script to get rid of junk (interfaces, processes, files in - A 'cleanup' command to get rid of junk (interfaces, processes, files in
/tmp, etc.) which might be left around by mininet. Try this if things /tmp, etc.) which might be left around by mininet. Try this if things
stop working! stop working!
# mn -c
- Examples (in examples/ directory) to help you get started. - Examples (in examples/ directory) to help you get started.
Batteries are not included (yet!) Batteries are not included (yet!)
@@ -71,5 +70,3 @@ file. Good luck!
--- ---
Bob Lantz Bob Lantz
rlantz@cs.stanford.edu rlantz@cs.stanford.edu
netns.c
-24
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@@ -1,24 +0,0 @@
/* netns: run a command in a network namespace.
* Simplified from netunshare.c on lxc.sf.net
*/
#include <stdio.h>
#include <linux/sched.h>
#include <unistd.h>
int main(int argc, char *argv[])
{
if (unshare(CLONE_NEWNET) == -1) {
perror("unshare");
return 1;
}
if (argc) {
execve(argv[1], &argv[1], __environ);
perror("execve");
return 1;
}
return 0;
}