HP Virtual Connect Version 3.61 Release Notes

Appendix: Feature details 21
When the pause flood protection feature is enabled, this feature detects pause flood conditions on server
downlink ports and disables the port. The port remains disabled until an administrative action is taken. The
administrative action involves the following steps:
1. Resolve the issue with the NIC on the server causing the continuous pause generation.
This might include updating the NIC firmware and device drivers. For information on firmware updates,
see the server support documentation.
Rebooting the server might not clear the pause flood condition if the cause of the pause flood condition
is in the NIC firmware. In this case, the server must be completely disconnected from the power source
to reset the NIC firmware. To perform a server reboot with power disconnection:
a. Shut down the server.
b. Log in to Onboard Administrator with Administrator privileges using the OA CLI.
c. Enter the command reset server x, where [x=bay number].
d. Confirm that you want to reset the server blade.
2. Re-enable the disabled ports on the VC interconnect modules using one of the following methods:
o Click Re-enable Ports in the GUI.
o Use the "reset port-protect" CLI command.
The SNMP agent supports trap generation when a pause flood condition is detected or cleared.
Virtual Connect provides the ability to enable or disable port pause flood protection. The feature is enabled
by default and applies to all VC-Enet modules in the domain. Port pause floods are detected and server ports
can be disabled even prior to any enclosure being imported.
Monitor the server downlink ports for the pause flood condition or network loop condition and take protective
action by disabling the port.
Supported actions: help, reset, set, show
Item Description
reset port-protect
Reset and restart all ports that are currently disabled due to the protection action.
Syntax
reset port-protect
Example
->reset port-protect
Resets the port-protection state on all ports currently disabled due to the port
protection action
Item Description
set port-protect
Modify the domain wide configuration for port protection against the following
denial of service conditions:
•
Network loop protection for server downlink ports
•
Pause flood protection for downlink physical ports
Syntax
set port-protect [-quiet] [networkLoop=<Enabled|Disabled>]
[pauseFlood=<Enabled|Disabled>]
Option
quiet (optional)
Suppresses user confirmation prompts. This option is useful when scripting
operations.
Properties
networkLoop
(required)
Enables/disables downlink network loop detection and protection. Valid values are
"Enabled" and "Disabled".