HP VAN SDN Controller Administrator Guide v3

3. Click the Uninstall button to remove (delete) the application.
The RSdoc tool does not support uninstalling an application. To use a cURL command for this task,
see appendix cURL Commands.
2.3.2 Using the Application Manager in a Teamed Environment
Using the Application Manager in a teamed environment is similar to the usage in a standalone
controller environment. In a teamed environment, an operation performed on any of the controllers
is propagated to all the other controllers in the team. Thus, loading a new application on any one
controller propagates the application to all other controllers in the team.
2.3.3 Summary of Built-In Network Services
Creates and updates a network graph for visualizing the network the
controller discovers.
TopologyViewer
The Topology Viewer uses the services of the Topology Manager and Link
Manager.
When hybrid mode is set to
false
TopologyManager
, Topology Manager computes the broadcast tree to avoid loops and
broadcast storms. (See “Hybrid mode for controlling packet-forwarding”
(page 75).) On a given switch it also provides the following:
• Provides a list of discovered ports on a given switch.
• Indicates whether a switch port is an edge port (connection point) or
part of a link.
• Indicates whether a port is in a blocked or open state by determining
whether ingress broadcast traffic is allowed through the port.
• Verifies whether a path exists between two nodes.
• Enumerates the clusters of OpenFlow-capable switches.
• For a given switch, provides details of the cluster to which it belongs.
• The Topology Manager provides notification to subscribed applications
regarding changes in the broadcast tree and cluster. This enables
development of intelligent and proactive applications that can subscribe
to topology change notifications.
Operation:Node Manager
• Learns and maintains end-host locations in the network.
• Uses information received from network devices to maintain the ARP
table and end host data.
• Uses the Topology Service to determine if a port receiving a packet is
an edge port or not.
• Learns and maintains end nodes in the controller domain, and associates
end nodes with edge ports.
18 SDN Controller Console