- 01 Sep 2022
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Testing Locally-Created Services
- Updated on 01 Sep 2022
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Services that have been created locally on the unit can be included in a Y.1564 or RFC-2544 test by enabling an internal loopback on one of the unit’s UNI ports to redirect the test traffic through the traffic policies.
A test where an internal loopback is enabled on both UNI ports (i.e. near-end and far-end), thus enabling services to be tested from end to end as in illustration.
UNI-to-UNI (End-to-End) Testing
The traffic in this end-to-end test moves seamlessly between the two units:
- The test traffic is generated toward the local UNI port on Unit 1.
- The internal loopback on Unit 1 redirects the traffic to the policies stage, then toward the NNI port.
- The test traffic enters Unit 2 and goes through the policies before reaching the UNI port.
- Another internal loopback is used on Unit 2's UNI port to loop the traffic and send it back to Unit 1.
- In both units, the traffic goes to the policing stages for the ingress direction as well as for the egress direction.
The units can also be configured to perform UNI-to-NNI testing, as well as NNI-to-UNI testing, as shown in illustration.
UNI-to-NNI Testing
NNI-to-UNI Testing
Notes: The Internal Loopback functionality only supports Layer-2 and Layer-2 Accedian test frames in conjunction with two-way tests. Other types of test traffic, such as Layer-2 Generic, Layer-3, are not supported.
When using an internal loopback, the maximum throughput is limited to 50% of the line rate.
To enable an internal loopback, access the Port Configuration menu. For details, see "Setting Up Ports".
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