HUAWEI NetEngine40E Universal ServiceRouter
Hardware Description
5 NE40E-8 Chassis Overview
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Figure 5-16 Appearance of the SRU
Figure 5-17 shows the appearance of an SRU that supports the 1588v2 protocol.
Figure 5-17 Appearance of the SRU
5.5.2 Features and Functions
Core Unit for System Control and Management
As the core unit for system control and management, the SRU provides the following
functions of the control plane of the system:
Route calculation
All protocol packets are sent by the forwarding engine to the SRU. The SRU broadcasts
and filters protocol packets, and downloads routing policies from the policy server.
Outband communication between boards
The LAN switch module integrated with the SRU performs the outband communication
between boards. It manages and maintains LPUs, SFUs, and SRUs, and exchanges
information between the boards.
Device management and maintenance
The SRU manages and maintains the system through the management interfaces such as
the console interface.
Data configuration
The SRU stores the configuration data and information about startup files, accounting,
software upgrade, and logs. Two CF cards on the SRU are used to store system data as
massive storage devices. The capacity of a CF card is 512 MB.
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