The dcn ospf timer poll command sets the interval at which DCN interfaces of a specified interface sends poll Hello packets on a non-broadcast multiple access (NBMA) network.
The undo dcn ospf timer poll command restores the default interval.
The default interval is 120 seconds.
Usage Scenario
On an NBMA network, to enable a device to send poll Hello packets at a specified interval after the device's neighbor goes Down, run the dcn ospf timer poll command.
Prerequisites
The DCN feature has been enabled globally using the dcn (interface view) command in the interface view, or DCN communication through sub-interfaces 4094 has been enabled using the dcn mode vlan command in the GE interface view.
Precautions
The interval value specified in the dcn ospf timer poll command must be at least four times as long as interval specified in the dcn ospf timer hello command.
If the dcn ospf timer poll command is run in the DCN view, the interval at which poll Hello packets are sent is set for all DCN interfaces.In VS mode, this command is supported only by the admin VS.