ME0D0SRUAH73 (Switch and Route Processing Unit A19(SRUA-480-H, 32G Memory))
| Item | Details |
|---|---|
| Description | Switch and Route Processing Unit A19(SRUA-480-H, 32G Memory) |
| Part Number | 03050ECX |
| Model | ME0D0SRUAH73 |
| Card type | SRU |
| Silkscreen | SRUA-480-H |
| Port | Connector Type | Description | Available Components |
|---|---|---|---|
| FSP0, FSP1 | RJ45 | Reserved. It functions as an interface for fast chassis switchovers. | 8-core shielded cable |
| GE/10GE | SFP/SFP+ | Reserved cascading interface. | Reserved cascading interface. |
| HP-GE0, HP-GE1 | SFP | High-precision clock interface | Optical module (34060286/S4016067/34060484) and Atom GPS timing SFP module (03034CGQ) |
| 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 | Inputs or outputs 2 Mbit/s clock signals, 2 MHz clock signals, 1pps+ASCII time signals, or two channels of DCLS time signals. It is reserved. | 120-ohm clock cable |
| CLK/TEST | SMA | Used for clock tests. | 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 operations, including route calculation, device management and maintenance, and device monitoring. As a system synchronization unit, this board provides high-precise and reliable clock and time signals. 2. Responsible for cell transmission between BSUs/MSUs and implements Ethernet communications with the SRU for centralized system control and management of the SRU. In addition, this board supports board temperature and voltage monitoring. |
| Reliability and availability |
Hot swapping is supported. The system control and switching fabric functions are integrated. The system control units work in 1:1 backup mode, and the switching fabric units work in 3+1 backup mode. The four SFUs load-balance services at the same time. If one SFU is faulty or replaced, the other three SFUs automatically take over its services to prevent service interruptions. This improves system reliability. |
| Restrictions and remarks | In V800R025C00SPC300 and later versions, this main control board can be used with the ME0D0SRUAH7E. Different types of boards have different maximum power consumptions. After an original main control board is replaced with another type of main control board, ensure that an additional power margin of at least 20 W is available compared to the original configuration. Otherwise, a power insufficiency alarm may be generated. Other scenarios do not support mixed use of different types of main control boards. |
| Breakout supported | No |
| Interface rate auto-sensing supported | No |
