5.1 Various Maintenance Methods
The ARs support various local and remote maintenance methods:
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Local maintenance using the console interface
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Local or remote maintenance using Telnet
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Secure shell (SSH) maintenance: guarantees security and provides authentication for login
users on an insecure network, and defends against various attacks, including IP address
spoofing, plain text password interception, and denial of service (DoS).
5.1.1 CWMP
The CPE WAN Management Protocol (CWMP) is drafted by the Digital Subscriber's Line (DSL)
forum. It is also called TR-069 standard. CWMP standardizes the communication between
customer premises equipment (CPE) and auto-configuration server (ACS).
There are a lot of user devices separated on the access network. They are difficult to manage
and maintain. The ARs are the CPE deployed at the user network side. The ACS uses CWMP
to remotely manage the CPE. This reduces maintenance cost and improves troubleshooting
efficiency.
5.1.2 Remote Deployment and Maintenance Using USB
The software engineers do not need to commission devices onsite during deployment. After
installing the device, hardware engineers will insert the USB disk into the USB interface on the
device and power on the device. After being started, the device automatically connects to the
network and upgrades software.
The deployment process is simplified and deployment costs are reduced by using the USB disk
on the AR.
5.1.3 SNMP-based Maintenance
The ARs support the Simple Network Management Protocol (SNMP) v1/v2c/v3 and the Client/
Server model. The ARs can be managed by the network management system (NMS), such as
iManager U2000.
5.2 Fault Location
5.2.1 Device Fault Location
The ARs support the following functions to locate device faults:
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Black box
If an AR restarts or stops working because of an error, it records the error information to
locate the fault.
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Log
After detecting a service error or recovery event, the AR logs the event and sends the
information to the background server.
Huawei AR1200-S Series Enterprise Routers
Product Description
5 Maintenance and Management
Issue 01 (2011-08-15)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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