-With in-band control, the location of the controller can be configured
-manually or discovered automatically:
-
-.RS
-.IP "controller discovery"
-To make \fBovs\-openflowd\fR discover the location of the controller
-automatically, do not specify the location of the controller on the
-\fBovs\-openflowd\fR command line.
-
-In this mode, \fBovs\-openflowd\fR will broadcast a DHCP request with vendor
-class identifier \fBOpenFlow\fR across the network devices added to
-the datapath with \fBovs\-dpctl add\-if\fR. It will accept any valid DHCP
-reply that has the same vendor class identifier and includes a
-vendor-specific option with code 1 whose contents are a string
-specifying the location of the controller in the same format used on
-the \fBovs\-openflowd\fR command line (e.g. \fBssl:192.168.0.1\fR).
-
-The DHCP reply may also, optionally, include a vendor-specific option
-with code 2 whose contents are a string specifying the URI to the base
-of the OpenFlow PKI (e.g. \fBhttp://192.168.0.1/openflow/pki\fR).
-This URI is used only for bootstrapping the OpenFlow PKI at initial
-switch setup; \fBovs\-openflowd\fR does not use it at all.
-
-The following ISC DHCP server configuration file assigns the IP
-address range 192.168.0.20 through 192.168.0.30 to OpenFlow switches
-that follow the switch protocol and addresses 192.168.0.1 through
-192.168.0.10 to all other DHCP clients:
-
-default-lease-time 600;
-.br
-max-lease-time 7200;
-.br
-option space openflow;
-.br
-option openflow.controller-vconn code 1 = text;
-.br
-option openflow.pki-uri code 2 = text;
-.br
-class "OpenFlow" {
-.br
- match if option vendor-class-identifier = "OpenFlow";
-.br
- vendor-option-space openflow;
-.br
- option openflow.controller-vconn "tcp:192.168.0.10";
-.br
- option openflow.pki-uri "http://192.168.0.10/openflow/pki";
-.br
- option vendor-class-identifier "OpenFlow";
-.br
-}
-.br
-subnet 192.168.0.0 netmask 255.255.255.0 {
-.br
- pool {
-.br
- allow members of "OpenFlow";
-.br
- range 192.168.0.20 192.168.0.30;
-.br
- }
-.br
- pool {
-.br
- deny members of "OpenFlow";
-.br
- range 192.168.0.1 192.168.0.10;
-.br
- }
-.br
-}
-.br
-
-.IP "manual configuration"
-To configure in-band control manually, specify the location of the