Configuring DCC Transparent Transmission Through External Clock Interfaces

If a third-party network exists between networks composed of Huawei equipment, the external clock interfaces can be used to transparently transmit the DCC information. In this way, the U2000 Web LCT can uniformly manage the networks composed of Huawei equipment.

Context

As shown in Figure 1, when a third-party network exists, external clock interfaces can be used to transmit DCC information. In this way, the U2000 Web LCT can configure and manage ring 2.

Figure 1 External clock interfaces used to transparently transmit DCC information (example)

NOTE:

If the third-party network does not exist, you can use a cable to connect the external clock interfaces of NE1 and NE2 to transparently transmit the DCC information.

Figure 2 shows how to connect NE1 and NE2. Through the third-party network, NE1 and NE2 can exchange E1 (DCC) signals.

Figure 2 External clock interfaces used to transparently transmit DCC information (example)

The network planning is as follows:

NOTE:

The external clock interfaces of NE1 and NE2 are connected to the first interface of the tributary board.
Configure a bidirectional cross-connection between the first VC-12 timeslot of the tributary board and the first VC-12 timeslot in the first VC-4 of the line board.
The RTN equipment can be connected to the third-party network by using the line board or intermediate frequency (IF) board.

Procedure

Configure the DCC transparent transmission through the external clock interface of NE 1.
1. In the NE Explorer, click an NE and choose Communication > DCC Management from the Function Tree.
2. Click DCC Rate Configuration. Click Create. In the Create dialog box displayed, select an external clock interface and set the parameters such as the channel type and protocol type. Click OK.
3. Select the external clock interface and set its enabling status to Enabled. Click OK in the dialog box displayed.
4. Click Apply. Click OK in the warning dialog box displayed. The Operation Result dialog box is displayed indicating that the operation was successful. Click Close.
Configure a bidirectional cross-connection between the tributary board and the line board. For details, refer to Configuring Cross-Connections.
Disable the DCC communication of the line board interconnected with the third-party network.
1. Select the port of the corresponding line board, click Enable Status, and select Disable. The Warning dialog box is displayed.
2. Click OK.
3. Click Apply. The Confirmation dialog box is displayed.
4. Click OK. The Operation Result dialog box is displayed indicating that the operation was successful.
Follow Steps 1 to 3 to perform the configuration on NE2.