ME0D0SRUAC7B (Switch and Route Processing Unit A12)
| Item | Details |
|---|---|
| Description | Switch and Route Processing Unit A12 |
| Part Number | 03058862 |
| Model | ME0D0SRUAC7B |
| Card type | SRU |
| Silkscreen | SRUA12-400 |
| Port | Connector Type | Description | Available Components |
|---|---|---|---|
| FSP0, FSP1 | RJ45 | Reserved. It functions as an interface for fast chassis switchovers. | 8-core shielded cable |
| 10GE | SFP+ | Reserved cascading interface. | Optical fiber |
| MGMT-ETH | RJ45 | It connects to an NMS and can work in half-duplex or full-duplex mode. | Super category 5 shielded twisted pair |
| CON | RJ45 | It connects to the console for on-site system configuration. Baud rate: 9600 bit/s (default value), which is configurable. | 8-core shielded cable |
| AUX | RJ45 | Used to redirect to the serial port of the peer device. The default baud rate is 9600 bit/s. | 8-core shielded cable |
| CLK | RJ45 | Used to input or output 2 Mbit/s clock signals, 2 MHz clock signals. | 120-ohm clock cable. If the peer end is an SMB interface, a 120 ohm-75 ohm converter box is required. |
| TOD | RJ45 | Used to input or output 1pps+ASCII time signals, or two channels of DCLS time signals. | 120-ohm clock cable. If the peer end is an SMB interface, a 120 ohm-75 ohm converter box is required. |
| CLK-INT | RJ45 | Used to input or output 2 Mbit/s clock signals, 2 MHz clock signals, 1pps+ASCII time signals, or two channels of DCLS time signals. | 120-ohm clock cable |
| SMA | SMA | Clock test port. | 50-ohm clock cable |
| USB | USB Type A | USB interface, reserved for future use. | - |
| Functions and Features | Description |
|---|---|
| Basic function |
1. Responsible for system control and management, including route calculation, device management and maintenance, and device monitoring. It also functions as the system synchronization unit to provide high-precision and high-reliability synchronization clock and time signals. 2. Switches cells between BSUs/MSUs, communicates with the main control boards over Ethernet, is subject to centralized control and management of the main control boards, and monitors the board temperature and voltage. |
| Reliability and availability | The main control boards and SFUs are integrated. The main control boards work in 1:1 backup mode, and the SFUs work in 2+1 backup mode. The three SFUs balance services at the same time. If one SFU is faulty or replaced, the other two SFUs automatically take over its services to ensure service continuity, improving system reliability. |
| Restrictions and remarks | This board cannot be installed in the same chassis as other types of main control boards. |
| Breakout supported | No |
| Interface rate auto-sensing supported | No |
| Link protocol | - |
