Add a Network Maintenance Task
You can add a network maintenance task to schedule maintenance events for network elements, so that you can perform updates or other configuration tasks. Currently, you can add maintenance events only for nodes with the overload bit set.
Maintenance events are planned failures at specific future dates and times. During a scheduled maintenance event, the selected elements are considered logically down. The system reroutes the LSPs around those elements during the maintenance period. After the maintenance event is completed, the default behavior is that all LSPs that were affected by the event are reoptimized.
The Path Computation Element (PCE) attempts to reoptimize only PCE-initiated and PCC-delegated LSPs (not PCC-controlled LSPs).
To add a network maintenance task:
Every time the task runs, it first checks the Complete condition for the maintenance event created by the task. If all the elements included in the maintenance task satisfy the Complete condition (for example, overloadBit = false), it completes the maintenance event. Next, it looks for elements that match the Create condition (for example, overloadBit = true). If it finds such elements, it initiates a new maintenance event that includes those elements.
Just as for other maintenance events, the “M” symbol on the topology map indicates the affected nodes. In the Maintenance tab of the network information table, the maintenance event displays the comment Created by maintenance task in the Comment column.
This type of maintenance event completes when the included nodes no longer have the overload bit set, but the event will not be deleted automatically. You must manually delete the completed event from the Maintenance tab of the network information table.
Field |
Description |
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Add New Task |
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Task Name |
Specify a unique name for the task. The name can contain only alphanumeric characters and some special characters (greater than (<), less than (<), colon (:), underscore (_), and hyphen (-)). |
Task Group |
From the list, select Utility Tasks. |
Task Type |
From the list, select Network Maintenance. |
Network Maintenance Task |
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Task Options |
Configure the following fields:
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Event Conditions |
Specify what conditions should trigger the initiation and completion of the maintenance event:
The PCE discovers the overload bit setting by using either the Network Topology Abstractor Daemon (NTAD) or the BGP Monitoring Protocol (BMP). |
Schedule |
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Startup Options |
Schedule—Select one of the following options to schedule the task:
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Recurrence Options |
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