Figure 19 The LogManager Configuration Component Controls Support Log queue size
Exporting the support logs
The
Export
operation:
1.
Gathers the set of support log file data from the controller, or in a team environment, all
active controllers in the team, and stores the data as a single compressed archive file:
sdn-all-logs.zip
2.
Downloads the archive file from the controller to the default download directory specified by
your browser. For example, in Ubuntu installations, this is usually the
Downloads
directory.
3.
Click
Export
.
The following menu appears in the lower-left corner of the controller console:
Figure 20 Completion of the export operation
4.
When the download completes, you can either resume interaction with the controller or
examine the log by selecting an item from the menu, such as:
•
Open a window showing the new log zip file.
•
Set the default operation to always open the directory containing the log zip file.
•
Show the log zip file in the default directory for receiving downloads.
NOTE:
The actions resulting from these choices depend on the browser and operating
system, not on the controller.
Packet listeners
The controller applications (and SDN applications) register packet listeners with the controller.
The order of processing an incoming packet is determined by the roles (Advisor, then Director,
then Observer), and then altitudes within a role (in decreasing value, with 0 the lowest altitude).
An incoming packet (PacketListenerRole) is wrapped in a Message Context (which also holds
a Packet-Out reply) which is passed to each packet listener in turn.
56
Using the SDN controller UI