Orion A10E - Sla; Introduction; Preparing for Configurations

Orion Networks
A10E/A28E/A28F Configuration Guide
8 OAM
Orion Networks
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8.3 SLA
8.3.1 Introduction
SLA is a telecommunication service evaluation standard negotiated by the service provider
and users. It is an agreement in service quality, priority and responsibility, etc.
In technology, SLA is real-time network performance detection and statistic technique for
responding time, network jitter, delay, packet loss rate, etc. SLA can choose different
operations to monitor measurement values for different applications.
The

Operation
It is a static concept. It is SLA network performance testing task from end to end, including
delay/jitter test (y1731-jitter/y1731-pkt-loss) on the Layer 2 network and delay/jitter test
(ICMP-echo/ICMP-jitter) on the Layer 3 network.

Test
It is a dynamic concept. It is used to describe an execution of one operation.

Detection
It is a dynamic concept. It is used to describe a procedure of transmitting-receiving packet in
operation test. According to definition of operation, one operation test can contain multiple
detections (a test only contains only one detection for Echo operation).

Schedule
It is a dynamic concept. It describes a schedule of one operation. One schedule contains
multiple periodical test execution.
8.3.2 Preparing for configurations
Scenario
The carrier and users sign SLA protocol to guarantee users can enjoy certain quality network
service. To perform SLA protocol effectively, carrier needs to deploy SLA feature test
performance on the A10E/A28E and the test result is evidence to ensure user's performance.
SLA feature chooses two testing node, configure SLA operation on one node and schedule
executing it to implement network performance test between the two nodes.
SLA takes statistics of round-trip packet loss rate, round-trip or unidirectional (SD/DS) delay,
jitter, jitter variance, jitter distribution, etc, and informs the upper monitoring software (such
as NMS) of these data, analyse network performance, and provide data required by the user.
Prerequisite

Deploy CFM between the tested devices.

Configure IP (scheduling of icmp-echo and icmp-jitter).