Status: in pre-design phase. Date: Sep 26 2003; Last revised:
It is often required to monitor the service level in networks. Service level is normally covered by Service Level Agreement (SLA), which defines the following parameters:
These may include: Maxium maintenance downtime per specified period; Maximum downtime period due to failures on the service provider side; Minimum service availability per specified period.
In order to store the service level information, we need a new datasource type in RRFW: event. It represents an atomic information about a single event in time, e.g. it canot be devided into more specific elements or sub-events. Its attributes are as follows:
maintenance
, downtime
. Events with the same names cannot overlap in
time.
Events are uniquely identified by (Event group, Event name, Start time) triple.
Renderer should be able to display the events at different summary levels and in different combinations. Event reports should be specified by expressions, as follows:
downtime AND NOT maintenance
.
(downtime AND NOT maintenance)[-2DAYS,NOW]
(downtime[-2DAYS,NOW] AND NOT maintenance AND
NOT downtime[200309151200,200309151300])
Events may be generated by the following sources:
Copyright (c) 2003 Stanislav Sinyagin <ssinyagin@yahoo.com>