OSN 3500 is a new-generation optical transmission system developed by Huawei. It adopts a unified switching architecture and can function as an MPLS/MPLS-TP-based packet device or a TDM device. When working with other devices of Huawei, OSN 3500 supports various networking modes, including the pure packet mode, hybrid networking (packet + TDM) mode, and pure TDM mode, achieving optimal processing for packet services and traditional SDH services. Thus, OSN 3500 efficiently transmits voice and data services over the same platform.
Version Description
The PEFF8 is available in one functional version, namely, N1.
Version Mapping
| Board | Start Version |
|---|---|
| N1PEFF8 | V200R011C00 |
Board Updates
This section describes the hardware updates in V200R013C30 and later versions as well as the reasons for the updates. Any product versions that are not listed in the document means that they have no hardware updates.
Hardware Updates in V200R015C30
| Type | Description |
|---|---|
| Add | New add the function "ETH-TRUNK". |
| Add | New add the function "LLDP (Link Layer Discovery Protocol)". |
Application
The PEFF8 is mainly used in the packet data transmission field to transmit/receive data packets, manage bandwidths, and implement switching of data packets.
Figure 1 shows the typical networking and application of the PEFF8. The PEFF8 works with the cross-connect board that provides the packet switching function to meet the requirement of packet features. With this board, the TDM domain can be overlapped with the packet domain on the OptiX OSN equipment so that the data can be transmitted in the two domains. In this manner, an MSTP network can smoothly evolve to a packet switching network.
Functions and Features
PEFF8 boards receive/transmit 8xFE optical signals and work with the PEG8 to process services.
Table 1 lists the functions and features supported by PEFF8 boards. When working with PEG8 boards, PEFF8 boards support the functions and features as described in Functions and Features.
Working Principle and Signal Flow
The PEFF8 consists of the access and converging module, control and driving module, temperature and voltage detecting module, clock module, and power module.
Figure 1 shows the functional block diagram of the PEFF8.
Upstream direction
The services in the upstream direction are accessed by the FE ports. The service packets are added with different VLAN tags based on the ingress ports. Then, the services are transmitted to the GE port on the backplane side. As a result, the FE services are converged into the GE services. After receiving the packets, the PEG8 identifies the ports to which the services correspond based on the VLAN tags and strips the VLAN tags.
Downstream direction
The services in the downstream direction are added with VLAN tags on the PEG8 based on the destination ports. Then, the services are accessed by the GE port on the backplane side. The destination ports of the service packets are determined based on the VLAN tags. After the destination ports of the service packets are determined, the VLAN tags are striped and the services are sent to the destination ports.
Access and Converging Module
The access and converging module performs the following functions:
- Transmits/Receives 8xFE optical signals.
- Converges 8xFE services into 1xGE services on the backplane side.
- Extracts IEEE 1588v2 clock information.
Control and Driving Module
The control and driving module performs the following functions:
- Detects the system status through the management control bus.
- Checks whether the board is properly inserted.
- Tests the voltage status.
- Implements the hot-pluggable function of the PEFF8.
Voltage Test Module
The voltage test module mainly provides the voltage monitoring function.
Clock Module
The clock module performs the following functions:
- Provides the working clock signal for each module of the PEFF8.
- Supports the synchronous Ethernet clock.
- Supports the IEEE 1588v2 clock.
Power Module
The power module converts the accessed DC voltage into the DC voltages that the modules of the board require.
Front Panel
The front panel of the PEFF8 has indicators, interfaces, a bar code, and a laser safety class label.
Diagram of the Front Panel
Figure 1 shows the appearance of the front panel of the PEFF8.
Indicators
- Board hardware status indicator (STAT) - two colors (red and green)
- Service activation status indicator (ACT) - one color (green)
- Service alarm indicator (SRV) - two colors (red and green)
- Connection status indicator (L/A1-L/A8) - two colors (yellow and green)
For the meanings of the status of the indicators, see Alarm Indicators on the Boards.
Valid Slots
The PEFF8 must be installed in a valid slot on the subrack. Otherwise, the PEFF8 fails to work normally.
The PEFF8 can be installed in slots 19-26, and 29-36 in the subrack.
The PEFF8 works as the interface board of the PEG8. For the slots valid for the PEG8, see Table 1.
Technical Specifications of the PEFF8
The technical specifications of the PEFF8 include the specifications specified for optical interfaces, laser safety class, mechanical specifications, and power consumption.
Specifications Specified for Interfaces
Table 1 provides the specifications of the optical interfaces on the PEFF8.
| Port type | Description |
|---|---|
| 100BASE-FX | 2 km FE two-fiber bidirectional optical interfaces |
| 100BASE-LX | 15 km FE two-fiber bidirectional optical interfaces |
| 100BASE-VX | 40 km FE two-fiber bidirectional optical interfaces |
| 100BASE-ZX | 80 km FE two-fiber bidirectional optical interfaces |
| 100BASE-LX | 15 km FE single-fiber bidirectional optical interfaces |
| 100BASE-VX | 40 km FE single-fiber bidirectional optical interfaces |
Laser Safety Class
The safety class of the laser on the board is Class 1. The maximum launched optical power of the optical interfaces is less than 10 dBm (10 mW).
Mechanical Specifications
The mechanical specifications of the PEFF8 are as follows:
- Dimensions (mm): 22.0 (W) x 125.2 (D) x 261.4 (H)
- Weight: 0.5 kg
Power Consumption
The maximum power consumption of the PEFF8 at room temperature (25°C) is 12 W.
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