Table 4 Controller settings to support hybrid mode (continued)
CommentsKeyController Configurations Component
To support ARP-based
host discovery, change
arp.agecom.hp.sdn.disco.of.node.impl.OfArpDiscoveryComponent
this setting in the
controller to be greater
than or equal to the “ip
arp-age” setting on
controlled switches.
To support DHCP-based
host discovery, change
dhcp.agecom.hp.sdn.disco.of.node.impl.OfDhcpDiscoveryComponent
this setting in the
controller to be greater
than or equal to the
timeout value of the
DHCP server(s) on your
network.
To view or reconfigure any of the above controller configuration components:
1. In the controller UI, select Configurations.
a. Select the Basic tab to view or modify the following components:
• com.hp.sdn.ctl.of.impl.ControllerManager
• com.hp.sdn.disco.of.node.impl.OfArpDiscoveryComponent
• com.hp.sdn.disco.of.node.impl.OfDhcpDiscoveryComponent
b. Select the Advanced tab to view or modify the following component:
• com.hp.sdn.disco.of.link.impl.OpenflowLinkDiscoveryComponent
2. Click the Modify button. In the Modify Configuration dialog box you can view the current
setting for each key for the component and make changes.
3. Click Apply to save the changes.
For more information on using the Configurations screen, see “Configurations screen details”
(page 39).
Limitations
For information on limitations in OpenFlow table support, see the HPE VAN SDN Controller and
Applications Support Matrix.
OpenFlow 1.0 is the default version of OpenFlow for Hewlett Packard Enterprise ProVision
switches. OpenFlow does not allow the controller to optimize flow location in hardware tables.
For concerns about line-rate data plane performance, configure all managed switches to use
OpenFlow 1.3. Failure to properly configure the switch in this way may cause packet loss or other
problems associated with high switch CPU utilization.
Uncontrolled switches in an OpenFlow Hybrid network are not visible to or controlled by the HPE
VAN SDN Controller. Uncontrolled switches are either controlled by another controller (outside
the team) or not controlled at all (traditional networking). Traffic by such switches is independently
managed.
The HPE VAN SDN Controller Path Diagnostic Tool is useful only when hybrid mode is disabled.
When hybrid mode is enabled, the controller does not monitor or direct all flows in the network.
As a result, the path diagnostic tool (PathDiagnosticManager) does not have visibility into all
flows on the network, and should not be used.
Coordinating controller hybrid mode and OpenFlow switch settings 83
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