SNR S2989G-24TX-UPS [115/553] Ddm function

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S2989G-24TX Operation Manual Chapter 2 Layer 2 services

Configuration

make the falling of the module capability that result in the transmission error.

Environment is not compatible with the module are as below:

（1） Voltage exceeds the set range

（2） Rx power is overload or is under the sensitivity of the transceiver

（3） Temperature exceeds the range of the running temperature

2.12.1.2 DDM Function

DDM descriptions are shown in the following:

1. Show the monitoring information of the transceiver

Administrator is able to know the current working state of the transceiver and find

some potential problems through checking the real-time parameters (including TX power,

RX power, Temperature, Voltage, Bias current) and querying the monitoring information

(such as warning, alarm, real-time state and threshold, and so on). Besides, checking the

fault information of the fiber module helps administrator to fast locate the link fault and

saves the restored time.

2. Threshold defined by the user

For real-time parameters (TX power, RX power, Temperature, Voltage, Bias current),

there are fixed thresholds. Because the user’s environments are difference, the users is

able to define the threshold (including high alarm, low alarm, high warn, low warn) to

flexibly monitor the working state of the transceiver and find the fault directly.

The thresholds configured by the user and the manufacturer can be shown at the

same time. When the threshold defined by the user is irrational, it will prompt the user and

automatically process alarm or warning according to the default threshold. (the user is

able to restore all thresholds to the default thresholds or restore a threshold to the default

threshold)

Threshold rationality: high/low warn should be between high alarm and low alarm and

high threshold should be higher than low threshold, namely, high alarm>= high warn>=

low warn>= low alarm.

For fiber module, verification mode of the receiving power includes inner verification

and outer verification which are decided by the manufacturer. Besides the verification

mode of the real-time parameters and the default thresholds are same.

3. Transceiver monitoring

Besides checking the real-time working state of the transceiver, the user needs to

monitor the detailed status, such as the former abnormity time and the abnormity type.

Transceiver monitoring helps the user to find the former abnormity status through

checking the log and query the last abnormity status through executing the commands.

When the user finds the abnormity information of the fiber module, the fiber module

information may be remonitored after processing the abnormity information, here, the user