Port Protection (WDM)

Navigation Path

In the NE Explorer, select an NE and choose Configuration > Port Protection from the Function Tree.

Note

For the protection switching command, the Web LCT considers only whether a command is successfully issued, but not the result of executing the command.

When you create optical line protection, you need to create protection for both the source and sink NEs to realize bidirectional protection.

Buttons

Button		Description
Query		Queries configuration data from the NE.
New		Creates a port protection group.
Delete		Deletes a port protection group.
Modify		Modifies the attributes of the protection group.
Function	Force to Working Channel	Performs a forced switch to the working channel, regardless of the working channel status.
	Force to Protection Channel	Performs a forced switch to the protection channel, regardless of the protection channel status.
	Manual to Working Channel	When the working channel is normal, the service is switched to the working channel. When the working channel is unavailable, the switch does not occur.
	Manual to Protection Channel	When the protection channel is normal, the service is switched to the protection channel. When the protection channel is unavailable, the switch does not occur.
	Lock	Locks out current switching status of the working channel.
	Clear	Clears the external commands and the internal middle status.
	Query Switching Status	Displays the current switching status of the protection group.

Parameters

**Table 1** Protection Group Parameters
Field	Value	Description
Protection Group Name	For example: NE811-52910	Displays the protection group name.
Protection Type	Optical Line Protection, Intra-Board 1+1 Protection, Client 1+1 Protection, Inter-Shelf 1+1 Optical Channel Protection	Displays the protection type of the protection group. Optical line protection protects line fibers between adjacent stations by using the dual fed and selective receiving function of OLP boards. The intra-board 1+1 protection utilizes the dual fed and selective receiving function of the OTU, OLP, or DCP board and diverse routing scheme to protect the service. The client 1+1 protection is configured with one working wavelength and one protection wavelength that are transmitted in two different routings to protect the OTU board and OCh fiber. The client 1+1 protection protects the OTU board and OCh fibers by using the dual fed and selective receiving function of the OLP/DCP/SCS board. The inter-shelf 1+1 optical channel protection scheme adopts two wavelengths: one is the working wavelength, and the other is the protection wavelength. The two wavelengths adopt different routes located in the different subracks to transmit signals to protect the client services.
Revertive Mode	Revertive, Non-Revertive Default: Non-Revertive	Indicates whether the service is automatically switched from the protection channel to the working channel after the working channel becomes normal. Revertive means that the service can be automatically switched. Non-Revertive means that the service is not switched to the working channel after the working channel becomes normal. NOTE: In the case of the intra-board 1+1 protection configured by using the OLP or DCP board, when the Monitoring Channel is configured, the Revertive Mode can be set to only the Non-revertive mode.
WTR Time (mm:ss)	5:00 to 12:00	WTR time indicates the time interval between the time when the working channel becomes normal and the time when the service is switched from the protection channel to the working channel. The Revertive Mode is valid only when the value is Revertive.
SD Switching	Enabled, Disabled Default: Disabled	Displays the SD trigger flag. NOTE: Optical line protection does not support SD switching.
SD Condition	CLIENT_SD, TCM, PM	Only Client 1+1 protection support SD Condition. For cascaded protection groups, select SD Condition as the SD trigger condition for protection switching. NOTE: SD Condition only can be set after query the protection group status. TCM: SD conditions on TCM section of OTN service. PM: SD conditions on PM section of OTN service. CLIENT_SD applies to non-OTN service.
SF Condition	CLIENT_SF, TCM, PM, CSF	Only Client 1+1 protection support SF Condition. For cascaded protection groups, select SF Condition as the SF trigger condition for protection switching. NOTE: SF Condition only can be set after query the protection group status. TCM: SF conditions on TCM section of OTN service. PM: SF conditions on PM section of OTN service. CLIENT_SF applies to non-OTN service.
Switching Status	Idle, WTR, Auto Switched, Manual to Working channel, Manual to Protection channel, Force to Working channel, Force to Protection channel, SD Switched, SF Switched, Locked, Unknown	Displays the current switching status of the protection group. NOTE: Optical line protection does not support SD switching.
Service Origin	Create Manually, Intelligently Generate, -	Displays the service origin. When the value is Intelligently Generate, the user can only query the service, and cannot modify the service settings. NOTE: Only Intra-Board 1+1 Protection supports this parameter.
Switching Mode	Directional Switching, Bidirectional Switching	Sets and displays the switchover mode of the protection group. NOTE: The parameter only applies to Intra-Board 1+1 Protection or Optical Line Protection . If Control/Detection Channel is NULL, this parameter is unavailable.
Channel Monitoring NE	For example: NE(122-45)	Sets the Channel Monitoring NE for the OLP bidirectional swtiching in optical line protection.
Channel Monitoring Board	For example: Shelf0(subrack)-7-12SC2	Sets the Channel Monitoring board for the OLP bidirectional swtiching in optical line protection.
Channel Monitoring Optical Port	For example: 1(RM1/TM1)	Sets the Channel Monitoring optical port for the OLP bidirectional swtiching in optical line protection.
APS Channel	0 to 7 Default: 7	Displays the APS channel. NOTE: This parameter can be set when Switching Mode is Bidirectional Switching.
Switching Trigger Point	Local, Peer, Unknown	Only Optical line protection support Switching Trigger Point. Indicates the point that triggers switching for the present protection group and its status. Local: The local NE detects a fault or issues a protection switching command. Peer: The peer NE detects a fault or issues a protection switching command. Unknown: It is unknown which point triggers the protection switching.

**Table 2** Channel Information Parameters
Field	Value	Description
Protection Group Name	For example: NE811-52910	Displays the protection group name.
Current Channel	Work, Protection, Unknown	Displays the path of the current service.
Working Channel	NE name-shelf ID(shelf name)-slot number-board name-port number(port name)	Displays the working channel of the protection group.
Working Channel Status	Normal, SD, SF, Unknown	Displays the status of the working channel. NOTE: Optical line protection does not the value of SD.
Working Channel Hold-Off Time (100ms)	0 to 100	Displays the delay time of the switch from the working channel to the protection channel. Delay time is the time delayed for the protection group to switch from the current channel to another channel. It effectively avoids repeated switching when the service status is not stable.
Control/Detection Channel	NE name-shelf ID(shelf name)-slot number-board name-port number(port name)	Displays the protected channel information of the control board. NOTE: Displays the protected channel information of the control board. In the case of the inter-subrack or inter-NE client-side 1+1 protection configured for the OLP or the DCP board, the Control Channel needs to be set. In the case of the intra-board 1+1 protection configured by using the OLP or the DCP board, the Monitoring Channel can be set according to the networking requirements to improve the signal detection capability, however, you may also leave this parameter unset. Optical line protection does not support setting Control Channel/Monitoring Channel.
Protection Channel	NE name-shelf ID(shelf name)-slot number-board name-port number(port name)	Displays the protection channel of the protection group.
Protection Channel Status	Normal, SD, SF, Unknown	Displays the status of the protection channel. NOTE: Optical line protection does not the value of SD.
Protection Channel Hold-Off Time (100 ms)	0 to 100	Displays the delay time of the switch from the protection channel to the working channel.
Switching Detection Time (10 ms)	0 to 1000	Switching Detection Time indicates the time interval waiting whether to perform switching or not when there is a trigger condition on the working channel or the protection channel. If there is no trigger condition on the other channel within the time interval, the board will perform switching. NOTE: Only Client 1+1 protection support Switching Detection Time (10 ms). This parameter can be set only when the working unit, protection unit and control/detection unit are all on the local NE. When you restart the NE Explorer or there is no operation on the NE for a long time , the parameter will be displayed as /. It is recommended that you click Query to query the Switching Detection Time from the NE before modifying the parameters of the protection group.