deploying and managing ip over wdm networks - Index of

The WINMAN Management System Concept 105
• Activate policies UC. The purpose of activating policies at the user level
is to instantiate a certain set of policies in the appropriate system components,
leaving it ready to be used by the execute policies UC.
• Execute policies UC. The purpose of execute policies at the user level is
to carry out actions according to an instantiated policy. The policy conditions
are checked and the relevant actions are executed. This UC may
be called from any of the NP, NIM, NM&R, and NDM UCs.
• Check policy UC. The check policy at the atomic level is intended to
determine both the policy validity in itself and whether it is in conflict
with all other existing policies. The principal mechanisms driving this
check will be dictated by rules specifically designed for such a purpose.
These rules are called metapolicies.
• Find policy UC. The purpose of this UC at atomic level is to find a
given policy in the repository.
6.4.2.2 Scheduling
The scheduler is a part of functionality in the WINMAN system to perform a
variety of tasks on such areas as (but not limited to):
• Connection management (implementing/activating a network connection);
• Configuration management (periodically making changes in the network);
• Fault management (providing fault management summary reports once
or on a certain time base, or changing correlation rules);
• Performance management (providing time-based reports or changing
thresholds);
• System administration (performing backups);
• Policy management (executing policies).
The scheduler keeps a list of tasks to be scheduled. These tasks are in principle
performed in a chronological fashion but also take into account the task
priority. However, policies that apply to the scheduler can override the execution
order.
The task to be scheduled can have a fixed date and time but can also have a
periodical schedule. The task owner is entitled to request the scheduling of a
task. Two possible owners are distinguished; a task is owned either by the
WINMAN operator or by the connection management UCs (provide
ICS/delete ICS/modify ICS).
• Schedule task UC. A task is added to the task list of the scheduler.