R250D
Hardware Installation and
Maintenance Guide
Issue 01
Date 2016-09-30
HUAWEI TECHNOLOGIES CO., LTD.
Copyright © Huawei Technologies Co., Ltd. 2016. All rights reserved.
No part of this document may be reproduced or transmitted in any form or by any means without prior written consent of Huawei Technologies Co., Ltd.
Trademarks and Permissions
and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd.
All other trademarks and trade names mentioned in this document are the property of their respective holders.
Notice
The purchased products, services and features are stipulated by the contract made between Huawei and the customer. All or part of the products, services and features described in this document may not be within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information, and recommendations in this document are provided "AS IS" without warranties, guarantees or representations of any kind, either express or implied.
The information in this document is subject to change without notice. Every effort has been made in the preparation of this document to ensure accuracy of the contents, but all statements, information, and recommendations in this document do not constitute a warranty of any kind, express or implied.
Huawei Technologies Co., Ltd.
Address: |
Huawei Industrial Base |
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Bantian, Longgang |
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Shenzhen 518129 |
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People's Republic of China |
Website: |
http://www.huawei.com |
Email: |
support@huawei.com |
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R250D |
About This Document |
Hardware Installation and Maintenance Guide |
About This Document
Intended Audience
This document describes hardware features of the R250D and provides basic installation methods.
This document is intended for:
•Network planning engineers
•Hardware installation engineers
•Commissioning engineers
•Onsite maintenance engineers
•System maintenance engineers
Symbol Conventions
The symbols that may be found in this document are defined as follows.
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equipment damage, data loss, performance |
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best practices and tips. |
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damage, and environment deterioration. |
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Change History
Changes between document issues are cumulative. The latest document issue contains all changes made in previous issues.
Issue 01 (2016-09-30)
Initial commercial release
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R250D |
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Hardware Installation and Maintenance Guide |
Contents |
Contents
About This Document..................................................................................................................... |
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1 Product Overview.......................................................................................................................... |
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1.1 |
Device Structure............................................................................................................................................................. |
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1.2 |
Indicator Description...................................................................................................................................................... |
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1.3 |
Basic Specifications........................................................................................................................................................ |
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1.4 |
Ordering Information...................................................................................................................................................... |
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2 AP Installation............................................................................................................................... |
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2.1 |
Preparing for Installation................................................................................................................................................ |
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2.2 |
Installation Flowchart..................................................................................................................................................... |
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2.3 |
Unpacking the Equipment.............................................................................................................................................. |
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2.4 |
Determining the Installation Position............................................................................................................................. |
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2.5 |
Installing the Device..................................................................................................................................................... |
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2.5.1 Installing the Device on a Wall or Ceiling................................................................................................................. |
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2.5.2 Installing the Device into an 86-Type Box................................................................................................................ |
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2.6 |
Cable Connection......................................................................................................................................................... |
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2.7 |
Checking the Device After Installation........................................................................................................................ |
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2.8 |
Powering on the Device................................................................................................................................................ |
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3 Logging In to the Device............................................................................................................ |
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3.1 |
Logging In to the Device Using STelnet/Telnet........................................................................................................... |
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4 Hardware Failures....................................................................................................................... |
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4.1 |
An device Fails to Be Powered On............................................................................................................................... |
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5 Appendix....................................................................................................................................... |
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5.1 |
On-site Cable Assembly and Installation..................................................................................................................... |
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5.1.1 Cable Assembly Precautions..................................................................................................................................... |
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5.1.2 Assembling Power Cables......................................................................................................................................... |
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5.1.3 Assembling Ethernet Cables...................................................................................................................................... |
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5.1.4 Installing Cable Accessories...................................................................................................................................... |
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5.1.5 Replacing the Mold of the Crimping Tool................................................................................................................. |
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5.2 |
Environmental Requirements for Device Operation.................................................................................................... |
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5.2.1 Environmental Requirements for an Equipment Room............................................................................................ |
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5.2.2 Requirements for Power Supply................................................................................................................................ |
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5.3 |
Equipment Grounding Specifications........................................................................................................................... |
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5.3.1 General Grounding Specifications............................................................................................................................. |
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5.3.2 Grounding Specifications for an Equipment Room.................................................................................................. |
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5.3.3 Grounding Specifications for Devices....................................................................................................................... |
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5.3.4 Grounding Specifications for Communications Power Supply................................................................................. |
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5.3.5 Grounding Specifications for Signal Cables............................................................................................................. |
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5.3.6 Specifications for Laying Out Grounding Cables..................................................................................................... |
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5.4 |
Engineering Labels for Cables..................................................................................................................................... |
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5.4.1 Introduction to Labels................................................................................................................................................ |
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5.4.2 Engineering Labels for Optical Fibers....................................................................................................................... |
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5.4.3 Engineering Labels for Network Cables................................................................................................................... |
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5.4.4 Engineering Labels for User Cables.......................................................................................................................... |
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5.4.5 Engineering Labels for Power Cables....................................................................................................................... |
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5.5 |
Guide to Using Optical Modules.................................................................................................................................. |
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5.6 |
Fault Tag....................................................................................................................................................................... |
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5.7 |
Installation Checklist.................................................................................................................................................... |
98 |
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R250D |
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Hardware Installation and Maintenance Guide |
1Product Overview
About This Chapter
The R250D in Huawei Agile Distributed Wi-Fi Solution is applicable to scenarios with highdensity rooms and complex wall structures, such as schools, hotels, hospitals, and office meeting rooms. Huawei R250D uses an 86 mm plate in compliance with international standards and can be easily installed into an 86–type box in a room. It is equipped with a built-in antenna and a hidden indicator; therefore, installation of the R250D does not affect indoor decorations or designs. It also has an IEEE 802.11a/b/g/n/ac/ac Wave 2 wireless module and can work on both 5 GHz and 2.4 GHz frequency bands. It supports PoE power supply, and can be directly connected to a central AP and deployed in a room. The central AP and the R250D are connected through network cables, which greatly extends the coverage range, enhances flexibility in AP deployment and planning, and reduces the engineering construction costs.
1.1Device Structure
1.2Indicator Description
1.3Basic Specifications
1.4Ordering Information
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Figure 1-1 shows the appearance of the R250D.
Figure 1-1 Appearance of the R250D
1 2 3
Table 1-1 describes ports on the R250D.
Table 1-1 Ports on the R250D
No. |
Name |
Description |
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1 |
Default |
Reset button: restores factory settings and restarts the device if |
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you hold down the button more than 3 seconds. |
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2 |
GE1 |
10/100/1000M port: connects to the wired Ethernet. |
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3 |
GE0/ |
10/100/1000M port: connect to the central AP and supports PoE |
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PoE_IN |
power input. |
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The R250D provides only one indicator, as shown in Figure 1-2.
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Figure 1-2 Indicator
GE1
Indicator
NOTE
•The indicator is located inside the panel, which turns on after the AP is powered on.
•Indicator colors may vary slightly at different temperature.
Table 1-2 Indicator description
Type |
Color |
Status |
Description |
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Default status after |
Green |
Steady on |
The AP is just |
power-on |
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powered on and the |
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software is not |
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started yet. |
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Software startup |
Green |
Steady on after |
After the system is |
status |
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blinking once |
reset and starts |
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uploading the |
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software, the |
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indicator blinks |
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green once. Until the |
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software is uploaded |
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and started, the |
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indicator remains |
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steady green. |
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Running status |
Green |
Blinking once every |
The system is |
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2s (0.5 Hz) |
running properly, the |
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Ethernet connection |
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is normal, and STAs |
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are associated with |
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the AP. |
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Type |
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Color |
Status |
Description |
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Blinking once every |
The system is |
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5s (0.2 Hz) |
running properly, the |
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Ethernet connection |
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is normal, and no |
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STA is associated |
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with the AP. The |
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system is in low |
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power consumption |
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state. |
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Alarm |
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Green |
Blinking once |
• The software is |
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Alarm Green every |
being upgraded. |
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0.25s (4 Hz) |
• After the |
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software is |
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uploaded and |
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started, the AP |
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working in Fit |
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AP mode |
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requests to go |
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online on the AC |
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and maintains |
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this state until it |
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goes online |
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successfully on |
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the AC (before |
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the CAPWAP |
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link is |
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established). |
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• The AP |
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registration fails |
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(the CAPWAP |
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link is |
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disconnected). |
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Fault |
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Red |
Steady on |
A fault that affects |
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services has |
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occurred, such as a |
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DRAM detection |
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failure or system |
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software loading |
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failure. The fault |
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cannot be |
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automatically |
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rectified and must be |
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rectified manually. |
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Table 1-3 provides basic specifications of the R250D.
Table 1-3 Basic specifications
Item |
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Description |
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Physical |
Dimensions (H x |
26 mm x 86 mm x 120 mm |
specifications |
W x D) |
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Weight |
0.2 kg |
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System memory |
• 256 MB DDR3L |
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• 32MB Flash |
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Power |
Power input |
PoE power supply: in compliance with IEEE |
specifications |
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802.3af/at |
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Maximum power |
10.1 W |
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consumption |
NOTE |
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The actual maximum power consumption depends on local |
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laws and regulations. |
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Environment |
Operating |
• -60 m to +1800 m: 0°C to +40°C |
specifications |
temperature |
• 1800 m to 5000 m: Temperature decreases by 1°C |
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every time the altitude increases 300 m. |
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Storage |
-40°C to +70°C |
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temperature |
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Operating |
5% to 95% (non-condensing) |
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humidity |
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IP rating |
IP20 |
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Atmospheric |
53 kPa to 106 kPa |
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pressure |
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To place an order, contact technical support personnel.
Part Number |
Description |
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50082920 |
R250D Mainframe(11ac,2x2 Double |
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Frequency,Built-in Antenna) |
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R250D |
2 AP Installation |
Hardware Installation and Maintenance Guide |
2AP Installation
About This Chapter
2.1Preparing for Installation
2.2Installation Flowchart
2.3Unpacking the Equipment
2.4Determining the Installation Position
2.5Installing the Device
2.6Cable Connection
2.7Checking the Device After Installation
2.8Powering on the Device
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This section describes safety precautions and tool preparations for AP installation.
Safety Precautions
•Take proper measures to prevent injuries and device damage.
•Place the device in a dry and flat position away from any liquid and prevent the device from slipping.
•Keep the device clean.
•Do not put the device and tools in the aisles.
CAUTION
Only the qualified personnel are permitted to install and remove the device and its accessories. Before installation and operation, read the safety precautions carefully.
Tool Preparation
To install APs, prepare tools listed in Table 2-1.
Table 2-1 Tools
Phillips screwdriver |
Protective gloves |
ESD gloves |
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Slip-proof glove |
Marker |
Hammer drill |
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Claw hammer |
Diagonal pliers |
Wire stripper |
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RJ45 crimping tool |
Cable cutter |
Network cable tester |
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Multimeter |
Ladder |
Safety helmet |
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Safety belt |
Anti-skid shoes |
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The following figure shows the process.
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Figure 2-1 Installation flowchart
Before unpacking the carton, ensure that the packing carton is intact and not damaged or soaked. Stop unpacking if the equipment is rusted or soggy. Then, investigate causes and contact the supplier.
After unpacking, check items in the carton against the packing list. If any item is missing, contact the supplier or agent.
Usually, the packing list contains the following items.
•Remote Unit
•Expansion screws
•Screw
•Quick start guide
•Warranty card
•MAC address label
•SN label
•Do not deploy the device in places with high temperature, dust, noxious gas, unstable voltage, much vibrations, or strong noise, or in places near flammable or explosive materials and interference sources such as a large radar station, radio station, and transformer station.
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•Install the device in a site that is free from leaking or dripping water, heavy dew, and humidity, and take protective measures to prevent water from flowing into the equipment along the cable.
•Place the AP far away from electronic devices that may produce radio interference, such as microwave ovens, antennas, and other radio communication devices. For details, see
Table 2-2.
•Install the device in hidden places and ensure that the device does not disturb daily work and life of residents.
•Make the engineering design by fully considering such factors as hydrology, geology, earthquake, electric power, and traffic. The selected site should comply with the environment design specifications of communications equipment.
Table 2-2 General anti-interference requirements
Scenario |
Deployment Distance Requirement |
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Indoor |
• There should be at least a 7 m distance between antennas. |
installation |
• The antennas should be placed at least 2 m from the 4G antennas of |
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the carrier. |
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• The antennas should be placed far away from electronic devices that |
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NOTE
If antennas are embedded into APs, the deployment distance requirements on the antennas are those on APs.
NOTE
Remove the protective film on the surface before installation to prevent electrostatic discharge.
Installing the device on a wall or ceiling requires expansion screws. The procedures are as follows:
1.Determine the installation area on the wall or ceiling and use a marker to mark the drilling positions (the distance between the two drilling positions should be 60 mm).
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60mm
2.Use a 6 mm drill bit to drill 25 mm to 30 mm deep holes in the drilling positions. Hammer the expansion tubes into the holes until the expansion tubes are completely embedded into the wall.
Ø6
25mm~30mm
3.Connect the cables. For details, see 2.6 Cable Connection.
4.Open the front cover of the device, align screws on both sides with the plastic expansion tubes, and use the Phillips screwdriver to tighten the two screws.
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ST3.5
0.3N•m
GE1
5.Close the cover. If torx security screws are used to prevent theft, use a T9 torx security screwdriver to tighten the torx security screws into the device.
ST2.5
0.16N•m
GE1
NOTE
You need to separately prepare the T9 torx security screwdriver.
Installing the device in an 86-type box requires expansion screws delivered with the device. The procedure is as follows:
1.Use a screwdriver to remove the 86-type panel from the wall (skip this step if no 86-type panel is installed on the wall).
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2.Connect the network cable to the GE0/PoE_IN interface.
3.Connect the cables. For details, see 2.6 Cable Connection.
4.Open the front cover of the device, align screws on both sides with the screw holes in the 86-type box, and use the Phillips screwdriver to tighten the two screws.
M4
1N•m
GE1
5.Close the cover. If torx security screws are used to prevent theft, use a T9 torx security screwdriver to tighten the torx security screws into the device.
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Hardware Installation and Maintenance Guide |
ST2.5
0.16N•m
GE1
NOTE
You need to separately prepare the T9 torx security screwdriver.
Table 2-3 describes the cable connections.
Figure 2-2 Appearance of the R250D
1 |
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Table 2-3 Cable connections |
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No. |
Cable or |
Description |
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Device |
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1 |
Network |
• CAT5e cables or higher must be used. |
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cable |
• The length of a cable cannot exceed 100 m. |
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• The Ethernet cable must work properly; otherwise, the |
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device may fail to be powered on or cannot run properly. |
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Before connecting an Ethernet cable to the R250D, use the |
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cable test tool to check whether the cable is qualified. If not, |
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replace the cable. |
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NOTICE |
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Do not insert a PoE input cable into the GE1 port. |
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Pay attention to the following points when bundling the cables:
•Different types of cables must be separately routed with the minimum spacing of 30 mm and cannot be entangled or crossed. Cables should be parallel or separated using dedicated separators.
•Bundled cables are closely arranged, straight, tidy, and undamaged.
•Cable ties are bound neatly facing the same direction, and those at the same horizontal line must be in a straight line. Cable tie tails should be cut smoothly and evenly.
•Labels or nameplates must be attached to the cables after they are installed.
Table 2-4 shows the items to be checked after installation is complete. For more details, see
Installation Checklist in the appendix.
Table 2-4 Installation checklist
No. |
Check Item |
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1 |
The device is installed by strictly following the design draft. The |
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installation position meets space requirements, with maintenance space |
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reserved. |
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2 |
The device is securely installed. |
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3 |
The power cables are intact and not spliced. |
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Terminals of the power cables are welded or cramped firmly. |
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All power cables are not short-circuited or reversely connected and must |
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be intact with no damage. |
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6 |
The power cables and ground cables are separated from other cables and |
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bundled separately. |
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Check Item |
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7 |
Connectors of signal cables are complete, intact, and tightly connected. |
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The signal cables are not damaged or broken. |
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8 |
Labels on cables are clear and correct. |
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After the device is powered on, observe indicator on the device to determine the system running status. For details, see 1.2 Indicator Description.
NOTE
Do not frequently power on and off the device.
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3 Logging In to the Device |
Hardware Installation and Maintenance Guide |
3Logging In to the Device
About This Chapter
3.1 Logging In to the Device Using STelnet/Telnet
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3 Logging In to the Device |
Hardware Installation and Maintenance Guide |
You can log in to the device using STelnet V2 or Telnet to configure, manage, and maintain the device in the CLI.
NOTE
•By default, only the STelnet V2 service is enabled on the device.
•Telnet has security vulnerabilities. You are not advised to enable the Telnet service.
Before logging in to the device, complete the following tasks:
•Power on the device.
•Prepare network cables used to connect device interfaces.
The following table lists the default configuration of the device. You are advised to change the default user name and password on your first login.
Table 3-1 Default configuration of the device
Parameter |
Default Setting |
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User name |
admin |
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Password |
admin@huawei.com |
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IP address |
169.254.1.1 |
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Subnet mask |
255.255.0.0 |
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NOTE
If the device is already online on the AC, you can remotely log in to the AC on a local terminal and run the display ap all command to check the IP address of the device.
The following example uses the default parameters and is used for reference only.
Step 1 Use network cables and a LAN switch to connect the PC to the network interface of the device.
Step 2 Assign the PC with an IP address on the same network segment as the default IP address of the device so that the PC and device are reachable to each other.
If the device uses the default settings, the IP address of the PC must be in the network segment 169.254.0.0/16 but cannot be 169.254.1.1. 169.254.1.100 is recommended.
Step 3 Start the CLI on the PC and access the IP address 169.254.1.1 of the device using STelnet V2.
Step 4 Enter the user name and password as prompted to log in to the user interface.
----End
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4 Hardware Failures |
Hardware Installation and Maintenance Guide |
4Hardware Failures
About This Chapter
This section describes common methods for troubleshooting typical hardware faults.
4.1 An device Fails to Be Powered On
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Fault Description
The SYS indicator of a device is off.
Possible Causes
•The power sourcing equipment does not support the PoE function or is faulty.
•The power sourcing equipment is incorrectly configured (the PoE function is disabled or the power-off time range is improperly set).
•The line is faulty (the network cable or distribution frame is damaged).
•The device is faulty.
Troubleshooting Procedure
1.Check whether the power sourcing equipment supports PoE or is faulty.
2.Check whether the configuration on the power sourcing equipment causes PoE power supply errors, such as the PoE function is disabled or the power-off time range is incorrectly set.
3.Check whether the network cable or distribution frame is faulty.
4.If the device still cannot be powered on, the device itself is faulty. Contact technical support personnel or Huawei agent and ask them to replace the device.
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5 Appendix |
Hardware Installation and Maintenance Guide |
5Appendix
About This Chapter
5.1On-site Cable Assembly and Installation
5.2Environmental Requirements for Device Operation
5.3Equipment Grounding Specifications
5.4Engineering Labels for Cables
5.5Guide to Using Optical Modules
5.6Fault Tag
5.7Installation Checklist
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5 Appendix |
Hardware Installation and Maintenance Guide |
5.1On-site Cable Assembly and Installation
Checking the Appearance of Cables
•If the cable jacket or insulation is visibly dirty, clean it before assembly.
•If the jacket or insulation of a cable has visible damage, irreparable scuffing, or other defects, do not use the cable.
•If the shield layer of a cable is damaged, do not use the cable.
•If the cable jacket or insulation cracks after the cable is bent or twisted, discard this cable and check whether other cables have the same problem. If other cables have the same problem, replace these cables.
Checking the Appearance of Connectors
•Do not use connectors with visible defects, damage, rust or scuffing.
•Do not use connectors if their shells or pins have exposed part or uneven plating, or their pins are lost, broken, or bent.
•Do not use connectors that have dirt on their pins or in their jacks or if there are conductors between pins or between pins and the shell.
Precautions for Assembly
•Use dedicated tools or tools delivered by Huawei and follow the methods given here during assembly.
•Hold terminals of cables instead of pulling the cables themselves when installing or removing cable components.
•Take the following precautions when cutting or stripping cables:
–Make cables slightly longer than necessary.
–Coil cables longer than 2 m (6.56 ft) after cutting. Bind and fasten the coils using bundling ropes. The inner diameters of the coils should be larger than 20 times the outer diameters of the cables.
–When stripping the jackets of cables, avoid damaging the shield layers (braid or aluminum foil), insulation, core conductors, and other jackets that do not need to be stripped.
–After assembling cables, cut all visible cross sections of jackets to ensure that the cross sections are arranged neatly.
–Do not touch the core conductors of cables with your hands. Terminate exposed conductors in a timely way after stripping off insulation so that the surface of the conductors does not become oxidized.
•Take the following precautions when crimping and connecting cables or connectors:
–The terminals and conductors should be connected tightly after they are crimped. They should not be moved or turned.
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–Cut all the exposed copper wires.
–Try to avoid a second crimping of sleeves.
–Keep all the conductors clean and aligned.
NOTE
The connectors, cables, and tools provided by different vendors may be different. The figures in this document are for your reference only.
Assembling the OT Terminal and Power Cable
Context
Figure 5-1 shows the components of an OT terminal and a power cable.
Figure 5-1 Components of an OT terminal and a power cable
A. Heat-shrinkable tubing |
B. Bare crimping terminal |
C. Insulation |
D. Conductor |
Procedure
Step 1 Based on the cross-sectional area of the cable conductor, strip a length of insulation coating C to expose the conductor D of length L1, as shown in Figure 5-2. The recommended values of L1 are listed in Table 5-1.
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5 Appendix |
Hardware Installation and Maintenance Guide |
Figure 5-2 Stripping a power cable (OT terminal)
NOTICE
•When you strip a power cable, do not damage the conductor of the cable.
•If the bare crimping terminal is not provided by Huawei, the value of L1 is 1 mm (0.04 in.) to 2 mm (0.08 in.) greater than the value of L.
Table 5-1 Mapping between the cross-sectional area of the conductor and the value of L1
Cross- |
Value of L1 |
Cross-Sectional |
Value of L1 |
Sectional |
(mm(in.)) |
Area of Conductor |
(mm(in.)) |
Area of |
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(mm2(in.2)) |
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Conductor |
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(mm2(in.2)) |
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1 (0.002) |
7 (0.28) |
10 (0.015) |
11 (0.43) |
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1.5 (0.002) |
7 (0.28) |
16 (0.025) |
13 (0.51) |
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2.5 (0.004) |
7 (0.28) |
25 (0.039) |
14 (0.55) |
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4 (0.006) |
8 (0.31) |
35 (0.054) |
16 (0.63) |
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6 (0.009) |
9 (0.35) |
50 (0.077) |
16 (0.63) |
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NOTE
If you are proficient in assembling OT terminals and power cables, you can obtain the value of L1 by comparing the part to be crimped with the power cable.
Step 2 Put the heat-shrinkable (A) tubing onto the bare crimping terminal, as shown in Figure 5-3.
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