Sru-Main Control Unit; Introduction; Function And Application - Huawei S7700 Hardware Description

S7700 Smart Routing Switch
Hardware Description

5.2 SRU-Main Control Unit

The SRU is the main control unit of the S7706 and S7712.

5.2.1 Introduction

The SRU is the control and switching platform of the S7712 and the S7706. It integrates the
control unit, system clock unit, switching unit, and system maintenance unit. The SRU is the
core component for system control and management. As the clock source and maintenance unit
of the system, the SRU is the control plane and maintenance plane of the system.
The SRU has two models: SRUA and SRUB. The SRUA model has only one type:
ES0D00SRUA00. The SRUB model has only one type: ES0D00SRUB00.
SRU models.
Table 5-7 SRU models
Name
ES0D00SRUA00
ES0D00SRUB00

5.2.2 Function and Application

Function
The SRU integrates the control and switching functions and provides the control plane,
management plane, and switching plane.
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Based on the functions, the SRU consists of the following modules physically:
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The control plane has such functions as protocol processing, service processing, route
calculation, forwarding control, service scheduling, traffic statistics, and system security.
The management plane is responsible for system monitoring, environment monitoring, log
and alarm processing, system loading, and system upgrade.
The switching plane provides high-speed and non-blocking data channels to implement
service switching between service modules. The S7700 supports double SRUs in 1+1 hot
backup with the data switching units working in load balancing, and supports flexible
card.
Control module: functions as the control and management plane for the SRU and the entire
system, implementing protocol processing, route calculation, forwarding control, system
management, and system security.
Switching module: functions as the service switching plane, providing high-speed service
channels to implement service switching.
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Switching Capacity
512 Gbit/s, bidirectional
1 Tbit/s, bidirectional
5 Boards
Table 5-7 lists the
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