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Various clean-ups to INSTALL.OpenFlow

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This commit is contained in:
Justin Pettit
2009-07-17 00:21:59 -07:00
parent c2d1694f41
commit 4cff83cbad
1 changed files with 22 additions and 13 deletions
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35
INSTALL.OpenFlow
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@@ -2,12 +2,14 @@
==============================================
Open vSwitch uses OpenFlow as its preferred method of remote flow table
configuration. Running ovs-vswitchd(8) with the bridge.<name>.controller
set of parameters as described in ovs-vswitchd.conf(5) will cause it to
connect to the specified controller using OpenFlow. We recommend using
OpenFlow in this manner, however, it is also possible to use Open vSwitch
as a simple OpenFlow switch like that provided by the OpenFlow reference
implementation [1].
configuration. This is the simplest method of using it with an OpenFlow
controller. All that is required is to follow the instructions in
INSTALL.Linux and add the bridge.<name>.controller set of parameters to the
ovs-vswitchd(8) configuration file as described in ovs-vswitchd.conf(5).
We recommend using OpenFlow in this manner. However, it is also possible to
use Open vSwitch as a simple OpenFlow switch like that provided by the
OpenFlow reference implementation [1]. The remainder of this file describes
how to user it in that manner.
What is OpenFlow?
-----------------
@@ -66,8 +68,8 @@ OpenFlow switch.
Creating datapath dp0 creates a new network device, also named dp0.
This network device, called the datapath's "local port", will be
bridged to the physical switch ports by ovs-openflowd(8), for use in
in-band control.
bridged to the physical switch ports by ovs-openflowd(8). It is
optionally used for in-band control as described in step 5.
4. Use ovs-dpctl to attach the datapath to physical interfaces on the
machine. Say, for example, you want to create a trivial 2-port
@@ -82,8 +84,14 @@ OpenFlow switch.
# ovs-dpctl show dp0
5. Arrange so that the switch can reach the controller over the
network.
5. Arrange so that the switch can reach the controller over the network.
This can be done in two ways. The switch may be configured for
out-of-band control, which means it uses a network separate from the
data traffic that it controls. Alternatively, the switch may be
configured to contact the controller over one of the network devices
under its control. In-band control is often more convenient than
out-of-band, because it is not necessary to maintain two independent
networks.
- If you are using out-of-band control, at this point make sure
that the switch machine can reach the controller over the
@@ -103,12 +111,13 @@ OpenFlow switch.
* If the switch does not have a static IP address, e.g. its
IP address is obtained dynamically via DHCP, then proceed
to step 4. The DHCP client will not be able to contact
the DHCP server until the secure channel has started up.
to the next step. The DHCP client will not be able to
contact the DHCP server until the secure channel has
started. The address will be obtained in step 7.
- If you are using in-band control with controller discovery, no
configuration is required at this point. You may proceed to
step 4.
the next step.
6. Run ovs-openflowd to start the secure channel connecting the datapath to
a remote controller. If the controller is running on host