FS M6500 Series, Configuration Manual

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M6500 Series NE Configuration Manual
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7. SNC Protection Configuration
7.1. Introduction of SNC Protection
SNC protection is also called subnet connection protection. Its function is when the signal on the client side fails
in the working channel (signal failure, signal degradation), the service can automatically switch to the
protection channel and continue to work normally.
The following figure shows the service environment of SNC protection. SNC protection service is configured for
the devices at both ends. One is the working channel and the other is the protection channel. When the signal
of the working channel is deteriorated or the signal is invalid, the protection channel is working normally at the
same time. The service will switch automatically from the working channel to the protection channel. The
switch time is less than 50ms, so the service interruption can not be perceived and the service can run normally.
Figure7-1 Schematic Diagram of SNC Protection Service Environment
7.2. Configuration Steps
Configuration Prerequisite: After the normal start-up of the equipment board, arrange the optical module and
optical fiber, connect the instrument and build the service environment.
Table7-1 SNC Configuration Process
Stage Configuration Method
Configure Service Type Select client side service and line side type
Enable client side port
Enable line side port
Line side signal is demultiplexed to low order ODU layer so as to match
line side rate and client side rate.
Configure Service
Cross-Connection with Protection Select SNC cross-connection type—bidirectional with protection or
unidirectional with protection
Select the service capacity, that is, the corresponding ODU time slot.
Select SNC protection mode—Site A protection or Site Z protection.