SNMP support for the timing feature

SNMP supports the timing feature. Currently, SNMP support is limited to defect and event notifications through SNMP traps. A new enterprise-specific MIB, Timing Feature Defect/Event Notification MIB, has been added to monitor the operation of PTP clocks within the network. The trap notifications are disabled by default. To enable trap notifications for the timing feature, include the timing-event statement at the [edit snmp trap-group trap-group object categories] hierarchy level to enable SNMP trap notifications for timing events and defects.