Configuring the LDGF2 Board

The LDGF2 board multiplexes two channels of 2 x GE service signals into two channels of OTU1 signals.

Prerequisite

You must have logged in to the NE where the board resides.

Tools, Meters, and Materials

Web LCT or T2000

Navigation Path

1. In the NE Explorer, select the board and then choose Configuration > WDM Interface from the Function Tree.

2. Select a proper navigation path according to the parameters. The details are as follows: l In the case of a parameter at channel level, select By Board/Port(Channel), choose

Channel from the drop-down list, and click the Basic Attributes or Advanced Attributes tab. Then, you can query or set the corresponding parameter.

l In the case of a parameter at board level, select By Board/Port(Channel) and choose Board from the drop-down list. Then, you can query or set the corresponding parameter.

NOTE

Parameter Settings

Field Value Description

Service Type GE, GE(GFP-T) Default: GE(GFP-T)

l Usually, GE(GFP-T) is recommended. In this mode, the transmission delay is small and all control protocol packets are transparently transmitted.

l In other cases, set this parameter to GE according to the service encapsulation mode. l Service types of the two boards that are

interconnected with each other must be consistent.

Channel Use Status

Used, Unused Default: Used

l Set this parameter to Unused when a channel that is not used.

l Set this parameter to Used when a channel that is used.

Automatic Laser Shutdown

Enabled, Disabled Default: Enabled for client-side optical interfaces, and Disabled for WDM- side optical

interfaces.

l The default value is recommended.

l This parameter must be set to Disabledin the case of WDM-side optical ports. That is, other values are invalid.

Hold-Off Time of Automatic Laser Shutdown 0s to 2s, with a step of 100 ms. Default: 0s

The default value is recommended.

Laser Status Open, Close Default:

l WDM side: Open l Client side: Close

l Usually, this parameter is set to Open for every WDM-side optical interface.

l In the case of client-side optical interfaces, retain the default value because Automatic Laser Shutdown is usually set to Enabled.

CAUTION

If the communication between NEs is achieved through only the ESC provided by the LDGF2 board, do not disable the WDM-side lasers on the LDGF2 board. Otherwise, NEs become unreachable when neither a standby channel is available nor protection is configured.

FEC Working State

Enabled, Disabled Default: Enabled

l Enabled is recommended.

l FEC Working State of the two interconnected OTU boards must be consistent.

Field Value Description Optical Interface Loopback Non-Loopback, Inloop, Outloop Default: Non- Loopback

Set this parameter to Non-Loopback when a network works normally. It can be set to Inloop or Outloop to help locate a faulty point in a test or a process of removing a fault on a network. However, it must be set to Non-Loopback right after the test is complete or the fault is removed.

When Automatic Disabling of NE Function is set to the default value Enabled, the loopback setting is automatically cancelled after Auto Disabling Time (default: 5 minutes) elapses.

SD Trigger Condition

SM_BIP8_SD, PM_BIP8_SD Default: None

This parameter is valid only when the SD Trigger Flag is set to Enable.

all the alarms can be set as the SD switching conditions.

Max. Packet Length

1518-9600 Default: 9600

This parameter is valid only when Service Type is set to GE. The default value is recommended.

Auto- Negotiation of GE

Enabled, Disabled Default: Disabled

The Auto Negotiation parameter is available only when the Service Type parameter is set to GE. l It is recommended to set this parameter to

Disabled.

l If the equipment of the customer adopts the auto negotiation, the value of the Auto Negotiation parameter must be consistent with the value of the Auto Negotiation parameter of the

equipment of the customer.

l The Auto Negotiation parameter must be consistent for the OTUs in the same protection group.

Intelligent Fiber Status

Enabled, Disabled Default: Enabled

When a link is faulty, and the fault state must be transparently transmitted to the interconnected client-side equipment, the IF function needs to be enabled.

l This parameter is valid only when Service Type of the optical port is set to GE.

l This parameter is invalid after the LPT function of the board is enabled.

LPT Enabled Enabled, Disabled Default: Disabled

This parameter is valid when Service Type is set to GE.

l The LPT function can work only with intra- board 1+1 protection and cannot work with any other protection.

l Set this parameter to Enabled when you want to enable the LPT function; otherwise, keep the default value for this parameter.

Field Value Description Band Type/ Wavelength No./ Wavelength (nm)/ Frequency (THz)

The parameter format is as follows: band type/wavelength No./ optical interface wavelength/ frequency, for example, CWDM/ 11/1471.00/208.170. Default: -

This parameter is for query only.

Band Type C, CWDM

Default: /

This parameter is for query only.

Optical Interface/ Channel - - Optical Interface Name - -