Configuring controllers and main connections, Setting the connection interruption mode, Setting openflow timers – H3C Technologies H3C S6800 Series Switches User Manual
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When OpenFlow operation is initiated, a switch is simultaneously connected to multiple controllers in
Equal state. A controller can request its role to be changed at any time.
Configuring controllers and main connections
An OpenFlow switch supports up to 64 controllers. However, the OpenFlow channel between the
OpenFlow switch and each controller can have only one main connection. The main connection
processes control messages to complete operations such as deploying entries, obtaining data, and
sending information. The main connection must be a reliable connection using TCP or SSL.
To specify a controller for an OpenFlow switch and configure the main connection to the controller:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter OpenFlow instance
view.
openflow instance instance-id N/A
3.
Specify a controller and
configure the main connection
to the controller.
controller id address { ip
ip-address | ipv6 ipv6-address }
[ port port-number ] [ local address
{ ip ip-address | ipv6
ipv6-address } [ port
port-number ] ] [ ssl
ssl-policy-name ][ vrf vrf-name ]
By default, an OpenFlow instance
is not configured with any main
connection.
Setting the connection interruption mode
An OpenFlow switch is set to either of the following modes when it is disconnected from all controllers:
•
Secure—In this mode, the OpenFlow switch forwards traffic based on flow tables and does not
delete unexpired flow entries.
•
Standalone—The OpenFlow switch uses the normal forwarding process.
The OpenFlow switch forwards traffic based on flow tables when it reconnects to a controller successfully.
To set the connection interruption mode for an OpenFlow switch:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter OpenFlow instance
view.
openflow instance instance-id N/A
3.
Set the connection
interruption mode.
fail-open mode { secure |
standalone }
By default, the secure mode is
used.
Setting OpenFlow timers
An OpenFlow switch supports the following timers: