Configuring Ethernet Ports Interfaces Violation Recovery
OmniSwitch AOS Release 8 Network Configuration Guide December 2017 page 1-15
Interfaces Violation Recovery
The OmniSwitch allows features to shutdown an interface when a violation occurs on that interface. To
support this functionality, the following interfaces violation recovery mechanisms are provided:
• Manual recovery of a downed interface using the interfaces split-mode command.
• An automatic recovery timer that indicates how much time a port remains shut down before the switch
automatically brings the port back up (see “Configuring the Violation Recovery Time” on page 1-17).
• A maximum number of recovery attempts setting that specifies how many recoveries can occur before
a port is permanently shutdown (see “Configuring the Violation Recovery Time” on page 1-17).
• A wait-to-restore timer that indicates the amount of time the switch waits to notify features that the
port is back up (see “Configuring the Wait-to-Restore Timer” on page 1-21).
• An SNMP trap that is generated each time an interface is shutdown by a feature. This can occur even
when the interface is already shutdown by another feature. The trap also indicates the reason for the
violation.
• An SNMP trap that is generated when a port is recovered. The trap also includes information about
how the port was recovered. Enabling or disabling this type of trap is allowed using the violation
recovery-trap command.
Violation Shutdown and Recovery Methods
A port can be shutdown with one of the following methods, depending on the feature.
Filtering – The port is blocked by applying filtering to discard all packets sent or received on the port.
With this method the link LED of the port remains ON. A port in this state can be recovered using the
following methods:
• Using the interfaces split-mode command to manually clear the violation.
• Automatic recovery when the interface recovery timer expires.
• Using the interfaces alias command to administratively disable and enable the interface.
• Disconnecting and reconnecting the interface link.
• A link down and link up event.
Administratively – A port is administratively disabled. With this method the LED does not remain ON. A
port in this state can be recovered using only the following methods:
• Using the interfaces split-mode command to manually clear the violation.
• Automatic recovery when the interface recovery timer expires.
• Using the interfaces alias command to administratively disable and enable the interface.
Disconnecting/reconnecting the interface link or a link down/up event will not recover a port that was
administratively disabled.
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