Huawei Technologies HG520C1 HOME GATEWAY User Manual USERS MANUAL
Huawei Technologies Co.,Ltd HOME GATEWAY USERS MANUAL
USERS MANUAL
EchoLife HG520/HG520e
Home Gateway
User Manual
Free Communication, Wonderful Life 
Thank you for purchasing EchoLife HG520/HG520e Home 
Gateway of Huawei. 
EchoLife HG520/HG520e Home Gateway 
User Manual 
Manual Version: T2-202001-20060622-V1.01 
Product Version: V200R001 

Copyright © 2006 Huawei Technologies Co., Ltd. 
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 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 the warranty of 
any kind, express or implied. 

Huawei Technologies Proprietary 
Note: 
HG520/HG520e Home Gateway (hereinafter referred to as HG520) is 
used indoors only. Pay attention to the following when installing and 
using HG520. 
  Basic requirements 
  Read this manual carefully before installing and using the 
equipment. 
  Take waterproof measures during storage, transportation and 
operation of the equipment. 
  Avoid collision during storage, transportation and operation of the 
equipment. 
  Do not dismantle the equipment by yourself. In case of failure, 
send the equipment to an authorized maintainer. 
  Without prior written consent from Huawei, no company or 
individual is allowed to decompile, disassemble, modify or 
reverse engineer the equipment and shall be solely responsible 
for any effect resulted from such action. 
  While using the equipment, observe related laws and regulations, 
and respect the legal rights of others. 
  Environmental Requirements 
  Place the equipment in a well-ventilated place. Avoid direct 
irradiation of any strong light (such as sunlight). 
  Keep the equipment clean. 
  Place the equipment on a flat and stable platform which is beyond 
the reach of children. 

Huawei Technologies Proprietary 
  Do not put heavy objects on the equipment. 
  Leave at least 10 cm space around the equipment for heat 
dissipation. 
  Do not put the equipment on any object that is flammable or not 
transcalent, such as foam and rubber. 
  Do not cover the equipment with any object or block the 
ventilation holes of the equipment. 
  Keep the equipment away from any heat source or exposed fire, 
such as an electronic warmer and a candle. 
  Keep the equipment away from appliances with a strong electric 
field or magnetic field, such as a microwave oven and a 
refrigerator. 
  Keep the equipment away from moisture or containers with liquid, 
such as a vase and a cup. 
 Usage 
  Do not allow children to use the equipment alone. 
  Do not allow children to touch or play with the small fittings, to 
avoid danger of deglutition. 
  Use the power adapter provided with the equipment only. 
  Use the accessories approved by the manufacturer. 
  The power supply shall meet the equipment specifications. 
  Before plugging or unplugging the cables, turn off the equipment 
and unplug the power supply. 
  While plugging or unplugging the cables, keep your hands dry 
and do not touch the metallic part of a cable. 
  Do not trample on, stretch, or over bend the equipment cables, to 
avoid equipment failure. 
  Do not use broken or worn wires. If a wire is broken or worn, 
contact your supplier for change. 

Huawei Technologies Proprietary 
  In a lightning storm, turn off the equipment and unplug the power 
supply, to avoid lightning strike. 
  Unplug the power supply if the equipment is not used for a long 
time. 
  In case of exceptions, turn off the equipment and unplug the 
power supply immediately. Then contact your supplier for 
maintenance. For example, the equipment emits smoke, peculiar 
smell or exceptional sounds. 
  Cleaning 
  Before cleaning the equipment, turn off the equipment and unplug 
the power supply. 
  Clean the equipment shell with a piece of soft cloth. 
  It is forbidden to spray liquid onto the equipment, to avoid damage 
to the internal circuit. 
  Keep the power socket clean and dry, to avoid electric shock or 
other dangers. 
  Note 
  If the device is in use for a long time, temperature of the shell will 
go up. Please do not worry. This is normal and the device can 
work normally. 

Huawei Technologies Proprietary 
About This Manual 
This manual introduces the function, features and operation of 
EchoLife HG520/HG520e. The main contents are as follows: 
To know  Refer to 
Features, network application 
and hardware structure  Chapter 1  Introduction 
Installation  Chapter 2  Installation 
Web-based configuration  Chapter 3  Web Configuration
Technical specifications  Chapter 4  Technical 
Specifications 
FCC materials, technical terms 
and abbreviations  Chapter 5  Appendix 
Environmental Protection 
This product has been designed to comply with the requirements on 
environmental protection. For the proper storage, use and disposal of 
this product, national laws and regulations must be observed. 
Huawei Technologies Proprietary 
i 
Table of Contents 
Chapter 1 Introduction ..................................................................... 1 
1.1 Functions............................................................................... 1 
1.2 Network Application .............................................................. 2 
1.3 Appearance........................................................................... 2 
1.3.1 Front Panel ................................................................. 3 
1.3.2 Rear Panel.................................................................. 5 
Chapter 2 Installation ....................................................................... 6 
2.1 Connecting Cables................................................................ 6 
2.2 Simple Configuration............................................................. 7 
2.2.1 Preparing for Configuration ........................................ 7 
2.2.2 Logging In to the Configuration Interface ................... 7 
Chapter 3 Web Configuration.......................................................... 9 
3.1 Home Page ........................................................................... 9 
3.2 Basic Configuration ............................................................. 10 
3.2.1 Service Information .................................................. 10 
3.2.2 System Information .................................................. 11 
3.2.3 WAN Configuration................................................... 12 
3.2.4 LAN Configuration .................................................... 20 
3.2.5 DHCP Configuration ................................................. 22 
3.2.6 Wireless Configuration ............................................. 24 
3.3 Advanced Configuration...................................................... 27 
3.3.1 IP Routing................................................................. 27 
3.3.2 ADSL ........................................................................ 29 
3.3.3 VLAN ........................................................................ 30 
Huawei Technologies Proprietary 
ii 
3.3.4 ACL........................................................................... 32 
3.3.5 Filters........................................................................ 33 
3.3.6 Firewall ..................................................................... 40 
3.3.7 NAT .......................................................................... 42 
3.3.8 QoS .......................................................................... 46 
3.3.9 DNS ..........................................................................47 
3.3.10 RIP.......................................................................... 48 
3.4 Tools Configuration ............................................................. 50 
3.4.1 System Password..................................................... 50 
3.4.2 Configuration File ..................................................... 51 
3.4.3 Firmware Upgrade.................................................... 52 
3.5 Status .................................................................................. 53 
3.5.1 System Log............................................................... 53 
3.5.2 Diagnostics ............................................................... 54 
3.5.3 Traffic Statistics ........................................................ 55 
3.5.4 ATM Counter ............................................................ 56 
3.5.5 LOS/LOF/ES............................................................. 57 
Chapter 4 Technical Specifications .............................................. 58 
Chapter 5 Appendix........................................................................ 61 
5.1 FCC..................................................................................... 61 
5.2 Acronyms and Abbreviations .............................................. 62 

Huawei Technologies Proprietary 
1 
Chapter 1  Introduction 
Thank you for purchasing EchoLife HG520/HG520e Home 
Gateway (hereinafter referred to as HG520). HG520 is an ADSL 
Access Point (AP) router for high-speed Internet access. 
This manual will introduce how to install and configure HG520. 
  Note: 
Compared to HG520, HG520e does not provide the USB interface 
and USB function. 
1.1  Functions 
The functions of HG520 are as follows: 
  Built-in ADSL/ADSL2+ modem for high-speed Internet 
access 
  Support Network Address Translation (NAT) and IP filtering 
  Support network sharing and firewall protection 
  Four Ethernet interfaces for Internet access through LAN 
  Support the DHCP protocol 
  Support web-based configuration 
  Support IEEE 802.11g 54 Mbit/s and can be used as 
wireless AP equipment 

Huawei Technologies Proprietary 
2 
1.2  Network Application 
HG520 is located on the user access layer of the network. 
It enables the following users to access an IP network through the 
ADSL uplink interface: 
  Small and medium enterprises 
  Family users 
HG520 provides both wired and wireless access. Figure 1-1 
shows the network application of HG520. 
N2000 NMS
DSLAM
BRAS
IPTV
NGN
Internet
Carrier's OSS
ACS
CDN IP
Network
HG520
Figure 1-1 Network application of HG520 
1.3  Appearance 
Figure 1-2 shows the appearance of HG520. 

Huawei Technologies Proprietary 
3 
Figure 1-2 HG520 
  Note: 
There is no USB indicator and USB port on HG520e. 
1.3.1  Front Panel 
Figure 1-3 shows the front panel of HG520. 
Figure 1-3 Front panel of HG520 
Table 1-1 describes these indicators. 

Huawei Technologies Proprietary 
4 
Table 1-1 Description of indicators 
Indicator  Status  Description 
On  The power is on. 
POWER 
Off  The power is off. 
On  The LAN link is normal. 
Off  The LAN link is not established. 
LAN 1-4 
Blinking  The LAN data is being transferred. 
On  The WLAN link is normal. 
Off  The WLAN link is not established. 
WLAN 
Blinking  The WLAN data is being transferred.
On  The USB link is normal. 
Off  The USB link is not established. 
USB 
Blinking  The USB data is being transferred. 
On  The ADSL link is normal. 
Off  The ADSL link is not established. 
ADSL 
Blinking  The ADSL link is being activated. 
On  The link is normal in the routing 
mode. 
Off  The link is not established in the 
bridging mode or routing mode. 
INTERNET 
Blinking  Data is being transferred in the 
routing mode. 

Huawei Technologies Proprietary 
5 
1.3.2  Rear Panel 
Figure 1-4 shows the rear panel of HG520. 
Figure 1-4 Rear panel of HG520 
For description of external interfaces and buttons on the rear 
panel, see Table 1-2. 
Table 1-2 Description of external interfaces 
Port/Button Description 
ADSL  It is the RJ-11 port used to connect with 
the phone jack on the wall or a splitter. 
Reset  It is used to restore the default settings of 
HG520. 
LAN1-4  It is the RJ-45 port used to connect with 
the Ethernet port of a computer or a LAN 
hub. 
USB  It is used to connect with the USB 
interface of your computer. 
ON/OFF  It is used to switch on/off HG520. 
Power  It is used to connect with the power 
adapter. 
Antenna  It is used for wireless connection with the 
LAN devices. 

Huawei Technologies Proprietary 
6 
Chapter 2  Installation 
2.1  Connecting Cables 
You need to connect HG520 with the phone jack on the wall, your 
computer(s), and the power adapter. 
  Caution: 
Before operation, you need to power off your computer(s), LAN 
hub/switch, and HG520. 
I. Connect the ADSL line 
Use a telephone line to connect the ADSL interface of HG520 
with either of the following two interfaces: 
  the phone jack on the wall 
  the Modem interface of a splitter 
II. Connect the network cable 
To connect HG520 to a LAN or computer, do as follows: 
Use a network cable to connect the hub port or the Ethernet 
interface of your computer with a LAN interface of HG520. 
Huawei Technologies Proprietary 
7 
III. Connect the power supply 
Use the power adapter to connect the POWER interface of 
HG520 with the power socket. 
IV. Start up the network devices 
Switch on HG520 and start up your computer, hub or other 
network devices. 
V. Configure HG520 through the Web interface 
For detailed configuration descriptions, see "Chapter 3  Web 
Configuration". 
2.2  Simple Configuration 
2.2.1  Preparing for Configuration 
Before the configuration, make sure that you have made the 
following preparations: 
1)  Connect HG520 and your computer with a network cable. 
2)  Power on HG520 and start up the computer. 
3)  Configure the computer to obtain IP address automatically. 
Alternatively, configure your computer to be in the same 
network segment as HG520. The default IP address of 
HG520 is 192.168.1.1. 
2.2.2  Logging In to the Configuration Interface 
The steps are as follows: 

Huawei Technologies Proprietary 
8 
1)  Enter the IP address of HG520 (192.168.1.1 by default) in 
the address bar of IE browser. The following dialog box is 
displayed. 
Figure 2-1 Authentication 
2)  Enter the default user name admin and password admin. 
3) Click OK. 
  Note: 
If you have problems during the configuration, contact your ISP for 
help. 

Huawei Technologies Proprietary 
9 
Chapter 3  Web Configuration 
3.1  Home Page 
After authentication, the home page of HG520 is displayed. See 
Figure 3-1. 
Figure 3-1 Home page of HG520 
  The left part is the navigation bar, providing links for you to 
access different pages. 

Huawei Technologies Proprietary 
10 
  The right part is the information area, showing details of 
configuration and management. 
  Note: 
There is no USB port on HG520e, and the diagrams in this chapter are 
for your reference only. 
3.2  Basic Configuration 
3.2.1  Service Information 
Click  Service Information of Basic in the navigation bar to 
display the service information of HG520. 

Huawei Technologies Proprietary 
11 
Figure 3-2 Service information 
This page displays the service information of LAN and WAN. 
3.2.2  System Information 
Click  System Information of Basic in the navigation bar to 
display the system information of HG520. 

Huawei Technologies Proprietary 
12 
Figure 3-3 System information 
This page displays the general information of HG520 and the 
current ADSL statistics. 
3.2.3  WAN Configuration 
Click Connections of Basic in the navigation bar to display the 
WAN Configurations page. 

Huawei Technologies Proprietary 
13 
Figure 3-4 WAN configuration 
The system provides eight PVCs. This page displays the 
information of existing PVCs. Usually, you can use the default 
settings. 
You need to delete existing PVCs before adding new PVCs. You 
can click New to add PVC. If you create new PVC, you need to enter 
the VPI and VCI values provided by your ISP. 
  Note: 
You can click the icon   to modify the configuration of existing PVCs 
or delete the PVC. 

Huawei Technologies Proprietary 
14 
The WAN connection includes the following types: 
  Bridge 
  DHCP 
  Static IP 
  2684 Route 
  PPPoE 
  PPPoA 
I. Bridge 
The bridge configuration page is as shown in Figure 3-5. 
Figure 3-5 Bridge 
Select the encapsulation mode and enter the VPI and VCI values. 
After the configuration, click Apply to save the settings, or click 
Clear to clear the settings. 
II. DHCP 
The DHCP configuration page is as shown in Figure 3-6. 

Huawei Technologies Proprietary 
15 
Figure 3-6 DHCP 
Select the encapsulation mode and enter the VPI and VCI values. 
If you enable Default Route, the DHCP server will dynamically 
specify a route for the data from the LAN side. By default, Default 
Route is enabled. 
If you select Disabled, only the data whose route is included in 
the IP routing table will be sent out through the WAN interface. Other 
data will be discarded. 
After the configuration, click Apply to save the settings, or click 
Clear to clear the settings. 
III. Static IP 
The static IP configuration page is shown in Figure 3-7. 

Huawei Technologies Proprietary 
16 
Figure 3-7 Static IP 
Select the encapsulation mode and enter the VPI and VCI values. 
You need to enter the IP address and subnet mask of HG520, 
which is provided by your ISP. 
If you enable Default Route, HG520 will transmit the LAN side 
data to the default gateway. In this case, you need to enter the IP 
address of the default gateway, which is provided by your ISP. 
By default, Default Route is enabled. If you select Disabled, 
only the data whose route is included in the IP routing table will be 
transmitted through the WAN interface. Other data will be discarded. 
After the configuration, click Apply to save the settings, or click 
Clear to clear the settings. 
IV. 2684 Route 
The 2684 route configuration page is as shown in Figure 3-8. 

Huawei Technologies Proprietary 
17 
Figure 3-8 2684 route 
Select the encapsulation mode and enter the VPI and VCI values. 
You need to enter the IP address and subnet mask of HG520, 
which is provided by your ISP. 
If you enable Default Route, HG520 will transmit the LAN side 
data to the default gateway. In this case, you need to enter the IP 
address of the default gateway, which is provided by your ISP. 
By default, Default Route is enabled. If you select Disabled, 
only the data whose route is included in the IP routing table will be 
transmitted through the WAN interface. Other data will be discarded. 

Huawei Technologies Proprietary 
18 
After the configuration, click Apply to save the settings, or click 
Clear to clear the settings. 
V. PPPoE/PPPoA 
The PPPoE and PPPoA configuration pages are as shown in 
Figure 3-9 and Figure 3-10. 
Figure 3-9 PPPoE 

Huawei Technologies Proprietary 
19 
Figure 3-10 PPPoA 
Select the encapsulation mode and enter the VPI and VCI values. 
If you enable Default Route, the office side server will 
dynamically specify a route for the LAN side data. 
By default, Default Route is enabled. If you select Disabled, 
only the data whose route is included in the IP routing table will be 
transmitted through the WAN interface. Other data will be discarded. 
You need to enter the user name and password for PPP dialing. 
It is recommended that you set Use DNS to Enabled, in this way, 
HG520 will obtain the DNS address during the PPP dialing. Otherwise, 
you need to enter addresses of the primary DNS server and the 
secondary DNS server on the DNS configuration page manually. 
It is recommended that you set Change Status to Start On Data, 
in this way HG520 will establish the PPP dialing when receive a linking 

Huawei Technologies Proprietary 
20 
request. You need to enter a value in Inactivity Timeout text box. The 
default value is 5. 
If you select Always On, HG520 will establish the PPP dialing 
when it is powered on. 
If you select Manual, the PPP dialing will be established 
manually. 
After the configuration, click Apply to save the settings, or click 
Clear to clear the settings. 
  Note: 
You need to reboot HG520 after change the WAN configuration. 
3.2.4  LAN Configuration 
Click  LAN  of  Basic in the navigation bar to display the LAN 
configuration page. 
You can change the default LAN IP address and subnet mask. 
Ensure that the IP address of your computer and the LAN IP address 
are in the same network segment. 

Huawei Technologies Proprietary 
21 
Figure 3-11 LAN configuration 
Enter the IP address for the Ethernet LAN interface. By default, it 
is 192.168.1.1. 
  Note: 
The public IP address assigned by your ISP is not the LAN IP address. 
The public IP address identifies the WAN interface that the ADSL 
gateway connects to Internet. 
Enter the subnet mask for the Ethernet LAN interface. By default, 
it is 255.255.255.0. 
After the configuration, click Apply to save the settings. 
  Note: 
If you change the IP address, you need to reboot HG520. 

Huawei Technologies Proprietary 
22 
3.2.5  DHCP Configuration 
Click DHCP of Basic in the navigation bar to display the DHCP 
configuration page. You can set HG520 as the DHCP server. 
I. Server configuration 
The default mode is DHCP Server. This mode is to configure 
HG520 as the DHCP server of LAN. Then HG520 will provide IP 
settings for your PC. Otherwise, the IP address of your computer 
needs to be configured manually or obtained from the DHCP server at 
the office end. 
Figure 3-12 DHCP server configuration 

Huawei Technologies Proprietary 
23 
II. DHCP server leases 
Figure 3-13 DHCP server leases 
You need to make the following configurations in this page: 
  Enter the MAC address of your computer in the MAC 
Address text box. 
  Enter the IP address of your computer in the IP Address text 
box. 
  Enter the validity period of the IP address in the Maximum 
lease time text box. 
After configuration, click Apply to save the settings, or click 
Cancel to clear the settings. 

Huawei Technologies Proprietary 
24 
III. DHCP Pool 
Figure 3-14 DHCP address pool 
You need to make the following configurations in this page: 
  Enter the start IP address and end IP address in the Start 
address and End address text boxes. These two IP 
addresses specify the range of IP addresses that can be 
assigned by the DHCP server. 
  Enter the validity period of the IP addresses assigned by the 
DHCP server in the Lease time text box. 
After configuration, click Apply to save the settings, or click Clear 
to clear the settings. 
3.2.6  Wireless Configuration 
Click WLAN of Basic in the navigation bar to display the WLAN 
configuration page. 

Huawei Technologies Proprietary 
25 
Figure 3-15 Wireless configuration 
You need to make the following configurations in this page: 
  For WLAN Function, you can select Enabled to enable the 
WLAN function of HG520. 
  Enter the SSID (Service Set Identifier) for wireless 
connection. SSID identifies the members of a service set. To 
connect with HG520 in the wireless mode, all the wireless 
devices in your LAN must use the same SSID as specified in 
this page. 
  Select a channel used for your wireless LAN from the 
Channel drop-down list. Remember that all wireless devices 
communicating with HG520 must use the same channel as 
specified in this page. 
Huawei Technologies Proprietary 
26 
  HG520 provides multiple wireless modules. Select a 
suitable one from the Module drop-down list. The 
modulation modes available are 802.11B, 802.11G, High 
Rate and Auto. 
  Select the network authentication mode. 
  If you select Open, the data will not be encrypted. 
  If you select Shared, HG520 will use WEP (Wired 
Encryption Protocol) to encrypt data through predefined 
key. HG520 offers 64-bit ASCII/Hex and 128-bit 
ASCII/Hex encryption, with four keys available. Select 
an encryption level from the WEP drop-down list, and 
then enter a WEP key with proper length. 
  If you select WPA-PSK, HG520 will use the simplified 
WPA (Wi-Fi Protected Access) to encrypt data. WPA is 
designed to provide improved data encryption and user 
authentication. HG520 provides TKIP (Temporal Key 
Integrity Protocol) and AES (Advanced Encryption 
Standard) arithmetic. Enter a key with proper length. 
  If you select WPA, you need to enter the RADIUS server 
IP address, port number and RADIUS secrite (the 
password used by external radius server, the length of 
Radius Secrite must be 1–64) 
  You can select Enabled for Intra BSS to enable different 
wireless devices in your LAN to access Internet and 
communicate with each other. 
Intra BSS traffic is traffic between wireless stations in the 
same BSS. If there are two wireless stations connecting to 
Internet through HG520 and the Intra-BSS function is 
enabled, both stations can access Internet and 

Huawei Technologies Proprietary 
27 
communicate with each other through the access point. If 
this function is disabled, then both stations can still access 
Internet but cannot communicate with each other through 
the access point. 
  If you select Enabled for SSID Hidden, the SSID will be 
hidden and cannot be viewed by WLAN clients. 
After configuration, click Apply to save the settings. 
  Note: 
You need to reboot HG520 after change the WLAN settings. 
3.3  Advanced Configuration 
3.3.1  IP Routing 
Click IP Routing of Advanced in the navigation bar to display the 
IP routing configuration page. 
IP routing configuration defines gateways and hops used to route 
data traffic. Usually, you do not need to use this feature, as the 
previously configured default gateway and LAN IP settings on your 
computers should be sufficient. 
You may need to define routes if: 
  your LAN includes two or more networks or subnets, or 
  you connect to two or more ISP services, or 

Huawei Technologies Proprietary 
28 
  you connect to a remote corporate LAN 
To add an IP route, click New to display the configuration page as 
shown in Figure 3-16. 
Figure 3-16 IP routing 
Description of the parameters is as follows: 
  IP Address specifies the IP address of the destination 
computer. You can enter the IP address of a specific 
computer or an entire network. The IP address can also be 
specified as all zeros to indicate that this route is applied to 
all destinations that have no specified routes. 
  Subnet Mask specifies the subnet mask of the destination 
computer. 
  Gateway specifies the address of the gateway through 
which data to the destination computer will be forwarded. 
After configuration, click Apply to save the settings, or click Clear 
to clear the settings. 

Huawei Technologies Proprietary 
29 
3.3.2  ADSL 
Click  ADSL of Advanced in the navigation bar to display the 
ADSL configuration page. 
Figure 3-17 ADSL configuration 
This configuration is used to change the ADSL modulation mode. 
  Note: 
Do not change the ADSL modulation mode unless you are instructed 
by your ISP. 
Description of the parameters is as follows: 
  HG520 supports multiple ADSL modulation modes. If you 
are instructed by your ISP to change the modulation mode 
used for your service, select the desired modulation mode. 
The modulation modes available are All, G.Dmt, ADSL2, 
ADSL2+, ADSL2+DELT, ADSL2M, ADSL2M+, T1.413, 
G.Lite and Multimode. 

Huawei Technologies Proprietary 
30 
  If BitSwap is enabled, HG520 allows the simple rate control 
to adjust the line speed automatically. 
After configuration, click Apply to save the settings. 
  Note: 
You need to reboot HG520 after change the ADSL modulations. 
3.3.3  VLAN 
Click  VLAN of Advanced  in the navigation bar to display the 
VLAN binding configuration page. 
A VLAN works like an ordinary LAN, but devices in a VLAN do not 
have to be physically connected to the same segment. While clients 
and servers may locate anywhere in a network, they can be grouped 
together by the VLAN technology, and broadcasts can be sent to 
devices within the VLAN. 

Huawei Technologies Proprietary 
31 
Figure 3-18 VLAN binding 
Description of the parameters is as follows: 
  For VLAN Binding Status, you can select Enabled VLAN 
Binding to enable the VLAN function. By default, it is 
disabled. 
  Ethernet Port displays the Ethernet port of HG520. 
  Default PVC displays the default PVC, which is to work as 
the VLAN port for VLAN binding PVCs. Thus, all the packets 
transmitting through bound PVCs will be transmitted through 
the default PVC. 
  PVC displays the PVCs bound to the VLAN. A maximum of 
eight PVCs can be added to a VLAN group. 
After the configuration, click Apply to save the settings, or click 
Clear to clear the settings.  
Click the   icon of a relative port, the VLAN Port Binding 
Properties page will be displayed at the lower part. You can modify 
the binding PVCs and default PVC for an Ethernet port. 

Huawei Technologies Proprietary 
32 
  Note: 
If you change VLAN settings, you need to reboot HG520. 
3.3.4  ACL 
Click ACL of Advanced in the navigation bar to display the ACL 
configuration page. Access control list is used to allow or deny the 
access from one or more specific IP addresses in LAN and WAN. 
The access control list configuration page is as shown in Figure 
3-19. 
Figure 3-19 Access control list 
If you set LAN Enable to enabled, HG520 will only allow the 
computers whose IP address is included in the access control list to 
access Internet. By default, it is Disabled, all the LAN IP addresses 
can access Internet. 
If you set WAN Enable to enabled, HG520 will only allow the 
computers whose IP address is included in the access control list to 

Huawei Technologies Proprietary 
33 
access HG520. By default, it is Enabled, all the WAN IP addresses 
can access HG520. 
Click New to add an access control list. 
Figure 3-20 Access control list – New 
Description of this configuration page is as follows: 
  For Interface, select the type of interface. 
  For IP Address, enter the IP address of the interface. 
  For Protocol, select the protocol from the drop-down list. 
3.3.5  Filters 
Click Filters of Advanced in the navigation bar to display the IP 
filter configuration page. 
Filters are used to deny or allow LAN computers to access 
Internet. Through the configuration of IP filters, you can refuse 
computers with the specified IP or MAC addresses to access Internet. 
You can also block access from Internet to your LAN. 

Huawei Technologies Proprietary 
34 
I. IP Filters 
You can deny computers with specified IP addresses from 
accessing Internet of LAN with IP filters. You can deny a specific port 
or all ports of a specified IP address. 
The existing IP filters are listed in the page. You can click the icon 
 to modify an IP filter. 
Figure 3-21 IP filters configuration—status 
Click New to add IP filters. 
The IP filter configuration page is as shown in Figure 3-22. 

Huawei Technologies Proprietary 
35 
Figure 3-22 IP filters configuration 
Description of this configuration page is as follows: 
  For Status, you can enable or disable the IP filter function. 
  For  Name, enter a name for the IP filter rule for easier 
identification. 
  For Action, you can select Allow to permit packets from the 
specified IP address to pass through HG520. To refuse 
packets from a specified IP address to pass through HG520, 
you can select Deny. 
  For Source Interface, if you select LAN, the filter rule will 
apply to packets from the specified range of IP address of 
your LAN. 
If you select WAN, the filter rule will apply to packets form 
the specified range of IP addresses of the WAN side. 
If you select both, the filter rule will apply to packets from 
both sides. 

Huawei Technologies Proprietary 
36 
  For Destination Interface, if you select LAN, the filter rule 
will apply to packets whose destination is in the specified 
range of IP addresses of your LAN. 
If you select WAN, the filter rule will apply to packets whose 
destination is in the specified range of IP addresses of the 
WAN side. 
If you select both, the filter rule will apply to packets to both 
sides. 
  For  Protocol, select the transmission protocol from the 
drop-down list. You can select TCP, UDP, ICMP or Any. 
  For Schedule, if you select Always, the rules set above will 
always be applied. On the other hand, you can set the period 
during which the filter rule will be applied from Time and Day 
drop-down list. 
After configuration, click Apply to save the settings, or click Clear 
to clear the settings. 
II. MAC Filters 
Through MAC filter configuration, you can deny LAN computers 
to access Internet. 
Figure 3-23 MAC filters configuration—status 

Huawei Technologies Proprietary 
37 
You can click New to add a MAC filter. 
The MAC filter configuration page is as shown in Figure 3-24. 
Figure 3-24 MAC filters configuration 
Description of the configuration page is as follows: 
  For  Status, you can enable or disable the MAC filter 
function. 
  For Name, enter a name for the rule, for easier identification 
later. 
  For Action, enter the MAC address of the LAN computer. 
After configuration, click Apply to save the settings. To 
delete a specified MAC filter, click Delete. To cancel the new 
settings, click Clear. 
III. URL Filters 
Through URL filter configuration, you can deny LAN computers to 
access specified web sites. Then URL (Uniform Resource Locator) will 
reject the specified web sites. URL is a specially formatted text string 
that defines a location on Internet. If any part of the URL contains the 
blocked word, the web site will not be allowed to access. 

Huawei Technologies Proprietary 
38 
Select Disabled URL Filter or Enabled URL Filter to disable or 
enable the URL filter function. 
Figure 3-25 URL filters configuration 
Click New to add URL filters. 
Figure 3-26 URL filters configuration 
Enter the web site that needs to be blocked in the URL Address 
text box. 
After configuration, click Apply to save the settings, or click Clear 
to clear the settings. 

Huawei Technologies Proprietary 
39 
IV. Domain Filters 
Through domain filter configuration, you can deny or allow LAN 
computers to access specified domains on Internet. That is, it will deny 
or allow requests such as http and ftp to a specified domain. 
Figure 3-27 Domain filters configuration 
Description of this page is as follows: 
  If you select Disabled Domain Blocking, the domain filter 
function is disabled. 
  If you select Allow, the LAN computers can access all 
domains except the blocked domains. 
  If you select Deny, the LAN computers can only access the 
permitted domains. 
Click New to add domain filters. 

Huawei Technologies Proprietary 
40 
Figure 3-28 Domain filters configuration 
You can configure a domain filter in this page. 
Description of this configuration page is as follows: 
1) For Status, select Permitted to permit the LAN computers 
to access the domain specified in Domain Name. You can 
also select Blocked to block the domain specified in 
Domain Name. 
2) For Domain Name, enter the name of the specified domain. 
After configuration, click Apply to save the settings, or click Clear 
to clear the settings. 
3.3.6  Firewall 
Click Firewall of Advanced in the navigation bar to display the 
firewall rules configuration page. 
The firewall configuration enables you to protect the system 
against Denial of Service (DoS) attacks and other types of 
unauthorized accesses to your LAN. 

Huawei Technologies Proprietary 
41 
I. Configuration page 
Figure 3-29 Firewall configuration 
II. Parameter explanation 
Description of this configuration page is as follows: 
  For Black List Status, select Enabled to enable the black 
list function. Thus, packets from the addresses specified in 
the black list cannot pass through HG520. Or you can select 
Disabled to disable the black list function. 
  For Block Duration, enter the duration that an IP address 
will remain on the black list. 
  For Use Attack Protection, select Allow to use the built-in 
firewall protections that prevent the following common types 
of attacks: 
  IP Spoofing: sends packets over the WAN interface by 
using an internal LAN IP address as the source address 
  Tear Drop: sends packets that contain overlapping 
fragments 
Huawei Technologies Proprietary 
42 
  Smurf and Fraggle: sends packets that use the WAN or 
LAN IP broadcast address as the source address 
  Land Attack: sends packets that use the same address 
as the source and destination address 
  Ping of Death: sends IP packets with illegal length 
  For Use DoS Protection, select Allow to use the following 
denial of service protections: SYN DoS, ICMP DoS, and 
Per-host DoS protection. 
  For  Max TCP Open Handshaking Count, enter the 
maximum number of TCP connections. If the TCP 
connections exceed this number, HG520 will discard the 
new incoming TCP connections. 
  For Max ICMP Count, enter the maximum number of ICMP 
connections. If the ICMP connections exceed this number, 
HG520 will discard the new incoming ICMP connections. 
  For Max Host Count, enter the maximum number of host, 
including hosts on the LAN. 
After configuration, click Apply to save the settings. 
3.3.7  NAT 
Click NAT of Advanced in the navigation bar to display the NAT 
configuration page. 
Network Address Translation (NAT) is to transfer the internal 
addresses of your LAN computers into a public address when the LAN 
computers access the external network. NAT is only applicable to TCP 
or UDP based applications. 

Huawei Technologies Proprietary 
43 
I. NAT 
Figure 3-30 NAT 
Select  Enabled or Disabled to enable or disable the NAT 
function. 
II. NAT Entries 
Figure 3-31 NAT entries 
Click New to add a NAT entry. 

Huawei Technologies Proprietary 
44 
Figure 3-32 NAT entry configuration 
Description of this configuration page is as follows: 
  For Status, select Enabled or Disabled to enable or disable 
the NAT function. 
  For Name, enter a name for the NAT entry. 
  For Inside IP and Inside Port, enter the IP address and port 
of a LAN computer. In case the external network accesses 
the internal network, the request will be forwarded to the 
specified LAN computer. 
  For  Protocol Type, select the protocol for NAT from the 
drop-down list. You can select TCP, UDP or Both. 
  For  Outside Port, enter the outside port of an external 
access. 
After configuration, click Apply to save the settings, or click Clear 
to clear the settings. 

Huawei Technologies Proprietary 
45 
III. UPnP 
Figure 3-33 UPnP 
Select  Enable or Disable to enable or disable the UPnP 
(Universal Plug and Play) function. 
After configuration, click Apply to save the settings. 
IV. DMZ 
Figure 3-34 DMZ 
Select  Enabled or Disabled to enable or disable the DMZ 
(Demilitarized Zone) function. 
Enter the IP address of a LAN computer in the NAT Default 
Server IP text box. External accesses that are not specified in the NAT 
configuration will be forwarded to this LAN computer first. 
Setting a LAN computer as the default NAT server may expose it 
to security risk. Thus, it is suggested that you do not use this function. 
After configuration, click Apply to save the settings. 

Huawei Technologies Proprietary 
46 
3.3.8  QoS 
Click QoS of Advanced in the navigation bar to display the QoS 
(Quality of Service) configuration page. 
Figure 3-35 QoS 
Select Enable to enable the QoS function. 
Scheduler Selection 
  If you select Priority Queue, HG520 will determine 
application’s priority according to the classifier list. 
  If you select WFQ (Weighted Fair Queuing), HG520 will 
determine application’s priority according to the priority 
queue and priority weight. You need to enter the Priority 
Weight. 
Select the PVCs that need to apply the scheduler. 
You can click New to add one priority entry. 

Huawei Technologies Proprietary 
47 
Figure 3-36 QoS – New 
Description of this configuration page is as follows: 
  For Classifier Entry Properties, you can select the priority 
level and the physical port from drop-down list. 
  For Application, you can select one protocol from Protocol 
drop-down list. If you select TCP or UDP, you need to enter 
the source port and destination port. 
  For Tos/IP Precedence/DSCP, you can select one type of 
QoS. The QoS types available are TOS (Type of Service), IP 
Precedence and DSCP (Differentiated Services Code 
Point). In this case, you need to enter an accepted format 
value in Encryption Input text box. 
After configuration, click Apply to save the settings. 
3.3.9  DNS 
Click DNS of Advanced in the navigation bar to display the DNS 
configuration page. 

Huawei Technologies Proprietary 
48 
Multiple DNS addresses are useful to provide alternatives when 
one of the servers is shut down or encountering heavy traffic. ISPs 
usually provide primary and secondary DNS addresses. 
Figure 3-37 DNS 
Description of this configuration page is as follows: 
  For DNS Status, if you select Enabled, the DNS addresses 
will be assigned automatically. If you select Disabled, the 
DNS addresses need to be configured below manually. 
  For Primary DNS Address and Secondary DNS Address, 
enter the DNS addresses manually. 
After configuration, click Apply to save the settings. 
3.3.10  RIP 
Click RIP of Advanced in the navigation bar to display the RIP 
configuration page. 
HG520 supports RIP v1 and RIP v2 to share routing tables with 
other Layer 3 routing devices on your local network or remote LAN. If 
your network does not employ another IP routing device, it is not 
necessary to enable RIP. 

Huawei Technologies Proprietary 
49 
Figure 3-38 RIP configuration 
RIP can be enabled on any existing WAN or LAN interface. 
You can click   to modify the specified RIP configuration. 
Figure 3-39 RIP configuration 
Description of the RIP configuration page is as follows: 
  Interface Name displays the interface on which you want to 
share routing table information with other routing devices. 
  For  RIP 1 Received, if you select Enabled, HG520 can 
receive packets that use the RIP 1 protocol. 
  For RIP 1 Send, if you select Enabled, HG520 can send 
packets that use the RIP 1 protocol. 

Huawei Technologies Proprietary 
50 
  For  RIP 2 Received, if you select Enabled, HG520 can 
receive packets that use the RIP 2 protocol. 
  For RIP 2 Send, if you select Enabled, HG520 can send 
packets that use the RIP 2 protocol. 
  For  Send MultiCast, if you select Enabled, HG520 can 
send multicast packets. 
After configuration, click Apply to save the settings. 
3.4  Tools Configuration 
3.4.1  System Password 
Click System Password of Tools in the navigation bar to display 
the password setting page. 
The administrator has read/write ability on the web page and can 
modify the configurations. You can change the default password for 
security concern. 
Figure 3-40 System password 

Huawei Technologies Proprietary 
51 
  Note: 
You need to remember your password. 
3.4.2  Configuration File 
Click Configuration File of Advanced  in the navigation bar to 
back up or upload the configuration file of the system. 
Figure 3-41 Configuration file 
Description of this page is as follows: 
  Click  Upload  to update the configuration of HG520. Click 
Browse to select the configuration file from the local hard 
disk, and then click Upload. Then the configuration file will 
be loaded to HG520. 
  Click  Backup to save the current system settings as a 
configuration file onto the local hard disk. The settings will be 
saved as a .cfg file. 

Huawei Technologies Proprietary 
52 
  Click  Restore default to restore the factory settings of 
HG520. You need to take cautions when using this button. 
This operation will clear previously saved settings. 
3.4.3  Firmware Upgrade 
Firmware upgrade is used to load the latest firmware for HG520. 
Note that the system settings may be restored to the factory settings, 
so ensure that you have saved the system settings. 
Click  Firmware Upgrade of  Tools in the navigation bar to 
upgrade the system firmware. 
Figure 3-42 Firmware upgrade 
To upgrade the firmware, enter the name and path of the file or 
click Browse to search for the file. Then click Upload. The file will be 
loaded and HG520 will restart automatically. 

Huawei Technologies Proprietary 
53 
3.5  Status 
3.5.1  System Log 
The log files keep record of the events and activities occurring on 
HG520. It can display up to 200 latest events. When your restart 
HG520, the logs are automatically cleared. 
I. System Log 
Figure 3-43 System log 
Description of this page is as follows: 
  Click First to display the first page of the logs. 
  Click Last to display the last page of the logs. 
  Click Previous to go back to the previous log page. 
  Click Next to go to the next log page. 
  Click Clear to clear the logs completely. 
  Click Log Settings to display the log configuration page. 

Huawei Technologies Proprietary 
54 
II. Log Setting 
Figure 3-44 Log setting 
In this configuration page, select the type of logs you want to 
record. Then click Apply to save the settings. 
3.5.2  Diagnostics 
The diagnostics function executes a series of test on your system 
software and hardware connections. You can use this function for 
troubleshooting. 
Click Diagnostics of Status in the navigation bar to perform the 
basic diagnostics for HG520. 

Huawei Technologies Proprietary 
55 
Figure 3-45 Diagnostics 
Select a PVC and click Submit. A message will be displayed, 
informing you whether the loop test succeeded or failed. 
The diagnostics utility will run a series of tests to check whether 
connections of HG520 are normal of not. This takes only a few 
seconds. The program reports whether the test passed or failed. A test 
may be skipped if no suitable interface is configured for running the 
test. 
3.5.3  Traffic Statistics 
Click Statistics of Status in the navigation bar to view the traffic 
statistics. 

Huawei Technologies Proprietary 
56 
Figure 3-46 Traffic statistics 
This page shows the received and transmitted packets count 
through ADSL, LAN and USB LAN port. You can click Refresh to 
update the statistics. 
  Note: 
There is no USB LAN port on HG520e. 
3.5.4  ATM Counter 
Click ATM Counter of Status  in the navigation bar to view the 
ATM statistics. 

Huawei Technologies Proprietary 
57 
Figure 3-47 ATM counter 
This page shows the received and transmitted frame and cell 
count on ATM. You can click Counters Reset to reset the statistics 
and click Counters Refresh to update the statistics. 
3.5.5  LOS/LOF/ES 
Click  LOS/LOF/ES of Status  in the navigation bar to view the 
LOS/LOF/ES statistics. 
Figure 3-48 LOS/LOF/ES 
You can click Refresh to update the statistics. 

Huawei Technologies Proprietary 
58 
Chapter 4  Technical Specifications 
General Specifications 
Item Feature 
ADSL Standards: 
ANSI T1.413 Issue 2 
ITU G.992.1 (G.dmt) Annex A 
ITU G.992.2 (G.lite) Annex A 
ITU G 994 1 (G.hs) 
ADSL2 Standards: 
ITU G.992.3 (G.dmt.bis) Annex A 
ADSL Standards 
ADSL2+ Standards: 
ITU G.992.5 Annex A 
ADSL Data Rate 
Downstream: up to 24 Mbit/s 
Upstream: up to 1 Mbit/s 
One ADSL port  RJ-11, inner pair (pin 2, 3) 
Performance  Pass DSL Forum TR-048/TR-067 
Performance Criteria 
Four Fast Ethernet 
ports 
RJ-45, 10/100 Mbit/s, MDI/MDIX 
Auto-sensing 
Standard Compliance IEEE 802.3, IEEE 802.3u 
One USB port  Type B connector (for HG520 only) 
Standard Compliance USB Implementation Forum USB 1.1 
Specification 

Huawei Technologies Proprietary 
59 
General Specifications 
IEEE 802.11 
IEEE 802.11b 
Wireless Standard 
Compliance 
IEEE 802.11g 
IEEE 802.11b: DQPSK, DBPSK, 
DSSS, and CCK 
Wireless Radio and 
Modulation Type  IEEE 802.11g: BPSK, QPSK, 16QAM, 
64QAM, OFDM 
Wireless Operating 
Frequency  2400 MHz – 2484.5 MHz ISM band 
11 channels for United States 
13 channels for European Countries 
Wireless Channel 
Numbers 
14 channels for Japan 
IEEE 802.11b:1, 2, 5.5, and 11Mbit/s 
Wireless Data Rate  IEEE 802.11g: 6, 9, 12, 18, 24, 36, 48, 
54Mbit/s 
Reset Button  Reset to factory default after push the 
button for 3 seconds. 

Huawei Technologies Proprietary 
60 
Physical and Environmental Specifications 
Power Adapter:  12 V AC 1.2 A 
Working Temperature: -5℃ – 50℃ 
Humidity:  5% – 95% (non-condensing) 
Dimensions:  215 mm × 172 mm × 41 mm 
Weight:  370 g 
Huawei Technologies Proprietary 
61 
Chapter 5  Appendix 
5.1  FCC 
1.  Company Name: Futurewei Technologies Inc 
Individual or Department: Mr. Evan Bai 
Address: 1700 Alma Dr., Suite 500, Plano TX 75075 
City: Plano 
State: TX 
Zip: 75075 
Phone: 972-509-5599 
URL: www.futurewei.com 
Email: terminal@huawei.com 
2.  Warning:  Changes or modifications to this unit not expressly 
approved by the party responsible for compliance could void the 
user authority to operate the equipment. 
   This device complies with Part 15 of the FCC Rules. Operation 
is subject to the following two conditions: 
1)  This device may not cause harmful interference, and 
2)  This device must accept any interference received, including 
interference that may cause undesired operation. 
Huawei Technologies Proprietary 
62 
NOTE: This equipment has been tested and found to comply 
with the limits for a Class B digital device, pursuant to Part 15 of the 
FCC Rules. These limits are designed to provide reasonable 
protection against harmful interference in a residential installation.  
This equipment generates, uses and can radiate radio frequency 
energy and, if not installed and used in accordance with the 
instructions, may cause harmful interference to radio 
communications. 
However, there is no guarantee that interference will not occur 
in a particular installation.  If this equipment does cause harmful 
interference to radio or television reception, which can be 
determined by turning the equipment off and on, the user is 
encouraged to try to correct the interference by one or more of the 
following measures: 
  Reorient or relocate the receiving antenna. 
  Increase the separation between the equipment and 
receiver. 
  Connect the equipment into an outlet on a circuit different 
from that to which the receiver is needed. 
  Consult the dealer or an experienced radio/TV technician for 
help. 
3.  Frequency: 2412 – 2462MHz 
4.  Channel: 1 - 11 
5.2  Acronyms and Abbreviations 
A   
ADSL Asymmetric Digital Subscriber Line 
To comply with FCC RF exposure compliance requirements, a separation 
distance of at least 20 cm must be maintained between the antenna of this 
device and all persons.
Huawei Technologies Proprietary 
63 
AES  Advanced Encryption Standard 
AP Access Point 
ATM  Asynchronous Transfer Mode 
D   
DoS  Denial of Service 
DHCP  Dynamic Host Configuration Protocol 
DNS  Domain Name Server 
DMZ Demilitarized Zone 
DSLAM  Digital Subscriber Line Access Multiplex 
I   
IP Internet Protocols 
ICMP  Internet Control Message Protocol 
ISP  Internet Service Provider 
L   
LAN Local Area Network 
M   
MAC  Media Access Control 
N   
Huawei Technologies Proprietary 
64 
NAT  Network Address Translation 
P   
PPP  Point to Point Protocol 
PPPoA  PPP over ATM 
PPPoE  PPP over Ethernet 
PVC  Permanent Virtual Connection 
Q   
QoS  Quality of Service 
R   
RIP  Routing Information Protocol 
S   
SSID  Service Set Identifier 
T   
TCP  Transfer Control Protocol 
TKIP  Temporal Key Integrity Protocol 
U   
UDP User Datagram Protocol 
Huawei Technologies Proprietary 
65 
UPnP  Universal Plug and Play 
USB  Universal Serial Bus 
V   
VCI  Virtual Channel Identifier 
VPI  Virtual Path Identifier 
W   
WAN  Wide Area Network 
WEP  Wireless encryption Protocol 
WFQ  Weighted Fair Queuing 
WPA  Wi-Fi Protected Access 
Huawei Technologies Co., Ltd. 
A
dministration Building, Huawei Technologies 
Co., Ltd., Bantian, Longgang District,  
Shenzhen, P. R. China 
Postal Code: 518129 
Website: http://www.huawei.com 
Email: terminal@huawei.com