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This
service defines, provisions, enables, monitors, and
maintains SLAs. It also may translate policies, rules, SLAs
and user requirements to system/network performance objectives, device
configuration, and management objectives. SLAs may specify required
performance, such as packet loss less than 1%; reliability, such as system
availability of 99.999%; security, such as need for authentication; and routing
constraints, such as bypassing specific sites. With the introduction of more
QoS sensitive applications, automation of this service and introduction of more
intelligent components become more desirable. The service is needed for proper
operations of various management functions such as performance management, and
fault management.
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