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Maintenance Testing

 

This section describes the maintenance testing support on ACX6160. The ACX6160 provides support for activation of traffic loopbacks on OTU interfaces, and supports the execution of Pseudo Random Binary Sequence (PRBS) tests on ODU interfaces.

Supported ACX6160 Loopbacks

The ACX6160 supports facility and terminal loopbacks on OTU interfaces. You can activate loopbacks on both Client and Line OTU interfaces. For facility loopbacks, the loopback occurs post FEC termination.

Note

Note that for a Client port and Line port that are paired in a transponder circuit, you can only activate one loopback at a time on the interfaces in this transponder.

Table 1 describes the loopbacks supported by the ACX6160 and the interfaces they can be used on to diagnose problems.

Table 1: Supported ACX6160 Loopbacks

Interface Type

Loopback Type

Description

Line OTU

fac

Loops back OTU traffic received from network on line side after FEC termination back towards traffic path transmitted to network direction.

Line OTU

term

Loops back traffic from host system back towards host and forwards as transmitted traffic on connected client interface.

Client OTU

fac

Loops back OTU traffic received from network on client side after FEC termination back towards traffic path transmitted to network direction.

Client OTU

term

Loops back traffic from host system back towards host and forwards as transmitted traffic on connected line client interface.

Open ROADM Loopback YANG Model Support

The columns in Table 2 are defined as:

  • YANG node — The node from the Open ROADM YANG model.

  • Access — Access properties of the node. Can be:

    • rw — read/write

    • ro — read-only

    • x — RPC function

    • n — notification

  • Supported — Indicates ACX6160 support for the node.

    • Yes — ACX6160 supports the node

    • No — ACX6160 does not support the node

    • N/A — Node is not applicable to transponder device

  • Supported Values — Describes the range of supported values on ACX6160.

Table 2 describes ACX6160 compliance with the content of the maint-loopback augmentation for OTU interfaces to the Open ROADM interface YANG model. The location within the Open ROADM YANG model of the nodes listed in the table is /org-openroadm-device/interface/otu.

Table 2: Open ROADM Loopback YANG Model Support

YANG Node

Access

Supported

Supported Values

- maint-loopback

rw

yes

container

-- maint-testsignal/enabled

rw

yes

true, false

-- maint-testsignal/type

rw

yes

fac2, term (fac loopback type not supported)

PRBS

The ACX6160 supports the conducting of PRBS tests on ODU interfaces. PRBS test signals and monitoring can be activated on both client and line ODU interfaces when a transponder circuit is configured for an OTU4 client. Note that due to a hardware limitation, PRBS tests are not supported for either the client or line side interfaces when the transponder client interface is configured as 100GE. Note that for a client port and line port that are paired in a transponder circuit, only one PRBS test at a time can be activated on the interfaces in this transponder.

Table 3 describes the PRBS tests supported by the ACX6160.

Table 3: Supported ACX6160 PRBS Tests

Interface Type

PRBS Test Type

Description

Line ODU

Fac

Transmits a generated PRBS test signal towards the network direction on the line side and monitors for a matching PRBS test signal on the traffic received from the network direction.

Line ODU

Term

Transmits a generated PRBS test signal towards the host direction which is forwarded as transmitted traffic on the connected client interface, and monitors for a matching PRBS test signal on the traffic received from the host direction.

Client ODU

Fac

Transmits a generated PRBS test signal towards the network direction on the client side and monitors for a matching PRBS test signal on the traffic received from the network direction.

Client ODU

Term

Transmits a generated PRBS test signal towards the host direction which is forwarded as transmitted traffic on the connected line interface, and monitors for a matching PRBS test signal on the traffic received from the host direction.

Table 4 describes ACX6160 compliance with the content of the maint-testsignal augmentation for ODU interfaces to the Open ROADM interface YANG model. The location within the Open ROADM YANG model of the nodes listed in the table is /org-openroadm-device/interface/odu.

Table 4: Open ROADM PRBS Tests YANG Model

YANG Node

Access

Supported

Supported Values

- maint-testsignal

rw

yes

Container

- maint-testsignal/enabled

rw

yes

true, false

- maint-testsignal/testPattern

rw

yes

PRBS, PRBS31

- maint-testsignal/type

rw

yes

fac, term

- maint-testsignal/bitErrors

ro

yes

Unsigned integer

- maint-testsignal/bitErrorsTerminal

ro

yes

Unsigned integer

- maint-testsignal/syncSeconds

ro

yes

Unsigned integer

- maint-testsignal/syncSecondsTerminal

ro

yes

Unsigned integer