Pentagram Cerberus Wi-Fi Lite User manual

Installation and User’s Manual
PENTAGRAM Cerberus
ADSL Wi-Fi Lite

NOTE! Any information and technical data are subject to change without prior notification
and/or indication in this manual.
© 2006 PENTAGRAM
All rights reserved; copying and reproduction is strictly forbidden.

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INDEX
INTRODUCTION ...................................................................................................... 5
PACKAGE CONTENTS ....................................................................................... 5
FEATURES.......................................................................................................... 6
PRODUCT OVERVIEW............................................................................................ 7
IMPORTANT NOTES........................................................................................... 7
FRONT LEDS ...................................................................................................... 7
THE REAR PORTS.............................................................................................. 8
DEFAULT SETTINGS.......................................................................................... 8
RESETTING ROUTER ........................................................................................ 9
CONNECTING CERBERUS TO COMPUTER..................................................... 9
CONFIGURE TCP/IP ........................................................................................... 9
CONFIGURE ROUTER VIA WEB BROWSER....................................................... 13
LOGIN................................................................................................................ 13
NAVIGATION..................................................................................................... 14
QUICK START WIZARD.................................................................................... 15
INTERFACE SETUP TAB.................................................................................. 20
ADVANCED SETUP TAB .................................................................................. 29
ACCESS MANAGEMENT TAB.......................................................................... 37
MAINTENANCE TAB ......................................................................................... 42
STATUS TAB..................................................................................................... 46
HELP TAB.......................................................................................................... 50
TROUBLESHOOTING............................................................................................ 51
USING LEDS TO DIAGNOSE PROBLEMS....................................................... 51
PROBLEMS WITH THE WEB INTERFACE ......................................................51
PROBLEMS WITH THE LOGIN USERNAME AND PASSWORD .....................52
PROBLEMS WITH LAN INTERFACE................................................................52
PROBLEMS WITH WAN INTERFACE .............................................................. 52
PROBLEMS WITH THE INTERNET ACCESS .................................................. 53

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Introduction
Thank you for purchasing the Cerberus ADSL Wi-Fi Lite ADSL2+ Modem/Router by
PENTAGRAM. Your new router is an all-in-one unit that combines an ADSL modem, ADSL
router and Ethernet network switch to provide everything you need to get the machines on
your network connected to the Internet over an ADSL broadband connection.
The Cerberus ADSL Wi-Fi Lite router complies with ADSL2+ standards for deployment
worldwide and supports downstream rates of up to 24 Mbps and upstream rates of up to 1
Mbps. Designed for small office, home office and residential users, the router enables even
faster Internet connections. You can enjoy ADSL services and broadband multimedia
applications such as interactive gaming, video streaming and real-time audio much easier and
faster than ever before.
Your new router also serves as an Internet firewall, protecting your network from access by
outside users. Not only does it provide a natural firewall function with Network Address
Translation (NAT), it also provides rich firewall features to secure your network. All incoming
data packets are monitored and filtered. You can also configure your new router to block
internal users from accessing the Internet.
The Integrated DHCP (Dynamic Host Control Protocol) client and server services allow
multiple users to get IP addresses automatically when the router boots up. Simply set local
machines as a DHCP client to accept a dynamically assigned IP address from the DHCP
server and reboot. Each time a local machine is powered up; the router recognizes it and
assigns an IP address to instantly connect it to the LAN.
For advanced users, Virtual Service (port forwarding) functions allow the product to provide
limited visibility to local machines with specific services for outside users. You can set an ISP
(Internet Service Provider) provided IP address on the Cerberus ADSL Wi-Fi Lite and then you
can reroute specific services to individual computers on your local network. For instance, a
dedicated web server can be connected to the Internet via the router and then incoming
requests for web pages that are received by the router can be rerouted to your dedicated local
web server, even though the server now has a different IP address.
Virtual Server can also be used to re-task services to multiple servers. For instance, you can
set the router to allow separated FTP, Web, and Multiplayer game servers to share the same
Internet-visible IP address while still protecting the servers and LAN users from hackers.
Package Contents
1. PENTAGRAM Cerberus ADSL Wi-Fi Lite
2. Power adapter 12 V, 1 A
3. Ethernet cable (RJ-45)
4. Telephone cable (RJ-11)
5. CD
6. Quick Installation Guide

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Features
•A 4-port 10/100Mbps fast Ethernet switch is built-in with automatic switching between
MDI and MDI-X for 10Base-T and 100Base-TX ports, with auto detection allowing you to
use either straight or cross-over Ethernet cables.
•With built-in 802.11g access point for extending the communication media to WLAN while
providing the WEP and WPA/WPA-TKIP/PSK for securing your wireless networks.
•Network Address Translation (NAT) allows multiple users to access outside resources
such as the Internet simultaneously with one IP address/one Internet access account.
Many application layer gateways (ALG) are supported such as web browser, ICQ, FTP,
Telnet, E-mail, News, Net2phone, Ping, NetMeeting, IP phone and others.
•Universal Plug and Play (UPnP) and UPnP NAT Traversal: This protocol is used to
enable simple and robust connectivity among stand-alone devices and PCs from many
different vendors, and it makes setting up a network simple and affordable. UPnP
architecture leverages TCP/IP and the Web to enable proximity networking in addition to
control and data transfer among networked devices. With this feature enabled, you can
seamlessly connect to Net Meeting or MSN Messenger.
•The Dynamic DNS service allows you to alias a dynamic IP address to a static hostname.
This dynamic IP address is the WAN IP address. To use the service, you must first apply
for an account from a DDNS service such as http://www.dyndns.org.
•The Cerberus ADSL2 Wi-Fi Lite provides an embedded PPPoE client function to
establish a connection. You get greater access speed without changing the operation
concept, while sharing the same ISP account and paying for one access account. No
PPPoE client software is required for the local computer. Automatic Reconnect and
Disconnect Timeout (Idle Timer) functions are also provided.
•Virtual Server: You can specify which services are visible to outside users. The router
detects an incoming service request and forwards it to the specific local computer for
handling. For example, you can assign a PC in a LAN to act as a Web server inside and
expose it to the outside network. Outside users can browse inside the web server directly
while it is protected by NAT. A DMZ host setting is also provided for local computers
exposed to the outside Internet network.
•Dynamic Host Configuration Protocol (DHCP) Client and Server: On a WAN site, the
DHCP client obtains an IP address from the Internet Service Provider (ISP) automatically.
On a LAN site, the DHCP server allocates a range of client IP addresses, including
subnet masks and DNS IP addresses and distributes them to local computers. This
provides an easy way to manage the local IP network.
•Static and RIP1/2 Routing: An easy static routing table or RIP1/2 routing protocol
supports routing capability.
•SNMP (Simple Network Management Protocol): SNMP allows convenient remote
management of the router.
•Web-based GUI: A web-based GUI offers easy configuration and management. User-
friendly and with on-line help, it also supports remote management capability for remote
users to configure and manage this product.

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•Firmware Upgradeable: You can upgrade the router with the latest firmware through its
web-based GUI.
•High Speed Internet Access: downstream rates of up to 24Mbps and upstream rates of
up to 1Mbps. Cerberus ADSL Wi-Fi Lite is compliant with the following standards: ANSI
T1.413 issue 2, ITU-T G.992.1 (G.dmt), ITU-T G.992.2 (G.lite), G.994.1 (G.hs,
Multimode), ITU-T G.992.3 (ADSL2 G.dmt.bis), ITU-T G.992.4 (ADSL2 G.lite.bis), ITU-T
G.992.5 (ADSL2+; Annex A, I, J, L & M), Reach Extended ADSL (RE ADSL).
•Multi-Protocol to Establish a Connection: The router supports PPPoA (RFC 2364 - PPP
over ATM Adaptation Layer 5), RFC 1483/2684 encapsulation over ATM (bridged or
routed), PPP over Ethernet (RFC 2516) and IPoA (RFC1577) to establish a connection
with an ISP. The router also supports VC-based and LLC-based multiplexing.
Product Overview
Important Notes
•Do not use the router in high humidity or high temperatures.
•Do not use the same power source for the router as other equipment.
•Do not open or repair the case yourself. If the router is too hot, turn off the
power immediately and have it repaired at a qualified service center.
•Avoid using this product and all accessories outdoors.
•Place the router on a stable surface.
•Only use the power adapter that comes with the package. Using a
different voltage rating power adaptor may damage the router.
Front LEDs
LED Description
1 PWR Lights when the power is ON.
2 WLAN Lit green when the wireless connection is established.
Flashes when sending/receiving data.
3 LAN1
4 LAN2
5 LAN3
6 LAN4
Steady glow when connected to an Ethernet device.
Glows green for 100Mbps; Orange for 10Mbps.
Blinking light when data is Transmitted / Received.
7 ADSL Lights when successfully connected to an ADSL DSLAM
Blinking when router is trying to connect to a DSLAM.

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The Rear Ports
LINE (RJ-11) Connect the supplied RJ-11 (telephone) cable to this port
when connecting to the ADSL/telephone network.
LAN (RJ-45)
Connect a UTP Ethernet cable (Cat-5 or Cat-5e) to one of the
four LAN ports when connecting to a PC or an office/home
network of 10Mbps or 100Mbps.
DEFAULT
After the router is powered on, press this recessed button
using the end of paper clip or other small pointed object to
reset the router or to restore it to factory default settings.
PWR Connect the supplied power adapter to this jack.
ON/OFF Power switch button.
Default Settings
Before changing configuration familiarize yourself with these default settings.
LAN/WLAN Ports
IP Address 10.0.0.2
Subnet Mask 255.0.0.0
DHCP Server Enabled
DHCP Server IP Address Pool 12 IP addresses
from 10.0.0.2
IP Address Lease Time 259200 seconds (72 hours)
User Name admin
Password trendchip
If you ever forget the password to log in, you may need to reset router to restore the factory
default settings. This procedure is described on the next page.

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Resetting router
•Turn router on and wait for ADSL LED to lit or start blinking.
•Press and hold DEFAULT button on the back panel of router for 5-10 seconds and then
release it.
•After reset LEDs will return to their normal behavior and all settings will be reset to their
default value. You can login web configurator using default username and password:
admin / trenchip.
Connecting Cerberus to Computer.
Cerberus can be connected to computer via Ethernet or WLAN:
Connecting via Ethernet Port (Ethernet Card)
If there is an available LAN card present on your PC, you just simply connect ADSL router and
PC through the Ethernet cable. Once you establish Internet connection, you could browse the
Web through the Ethernet cable.
Connecting via WLAN Interface (Wireless Card)
To connect PC to Cerberus via WLAN, Wireless Adapter must be properly installed and
configured and both router and PC must be in the same subnet.
Configure TCP/IP
This part will help you to configure your computer to communicate with Cerberus ADSL Wi-Fi
Lite router properly. Computer must be either equipped with network adapter connected
directly to Cerberus ADSL Wi-Fi Lite router or wireless network adapter (compatible with Wi-Fi
802.11b/g standard). Wireless network adapter must have the same session ID (ESSID) and
establish connection with the network created by router. You can also connect to Cerberus
ADSL Wi-Fi Lite router via network hub/switch. Default IP address of the router is 10.0.0.2 and
subnet mask is 255.0.0.0. Fastest and easiest method to configure your computer is to obtain
an IP address automatically from router’s DHCP server.
Make sure that TCP/IP protocol and network adapter are installed on your computer.

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Windows 2000/XP
1. Click Start →Settings →Control Panel.
Double-click the Network Connections
(2000/XP Classic view) or click Network and
Internet Connections and then Network
Connections (XP Default view).
2. Double-click the Local Area Connection.
3. Click the Properties button.
4. Go to General tab, select Internet Protocol
(TCP/IP) and click Properties.
5. Go to General tab, select Obtain an IP
address automatically and DNS server
address automatically.
6. Then, click OK.

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Windows 95/98/Me
1. Click Start →Settings →Control Panel.
Double-click the Network icon.
2. Go to Configuration tab, select TCP/IP for
network adapter installed and click
Properties.
3. Go to IP Address tab and select Obtain an IP
address automatically.
4. Go to DNS Configuration tab, select Disable
DNS and click OK.

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Windows NT
1. Click Start →Settings →Control Panel.
Double-click the Network icon.
2. Go to Protocols tab, select TCP/IP Protocol
and click Properties.
3. Go to IP Address tab, select Obtain an IP
address from DHCP server and click OK.
To make sure that network adapter properly obtained an IP address from router’s DHCP
server, click Start > Run and type cmd (Win 2000/XP) or command (Win 98/ME). In
command line type ipconfig /all and check that value of the IP Address is 10.0.0.x

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Configure router via web browser
Cerberus ADSL Wi-Fi Lite router can be configured via web browser, which is usually
integrated with operating system. Router offers clear and simple interface.
Login
1. Launch the Web browser
2. Enter the default IP address: 10.0.0.2
3. Enter default username (admin) and password (trendchip)

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Navigation
Steps to navigate the Web configuration from the Site Map are summarized below:
•Quick Start – wizard that helps to configure your router,
•Interface Setup – configure Internet and LAN functions,
•Advanced Setup – configure advanced features,
•Access Management – manage Internet access options,
•Maintenance – set a new password, set the time zone, upgrade or reload firmware and
run diagnostic tests on the router,
•Status – router device information, system logs and performance statistics,
•Help – available help topics.

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Quick Start Wizard
Click Quick Start to guide you to configure the device to connect your ISP and have Internet
access within minutes. This Quick Start will guide you step by step to configure the password,
time zone, and WAN settings of you device. This Wizard is a helpful guide for first time uses to
the device. It is strongly recommended to use Quick Start to configure your ADSL settings.
Click on the RUN WIZARD button to start the Quick Start wizard. The Quick Start wizard will
open a new browser window with the following screen:
Please follow the quick start step by step to configure the device.
Click on NEXT to continue, or on EXIT to exit the wizard without saving.

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Setting a New Password
This screen helps you set a new password, replacing the default password.
Enter new password in New Password and Confirmed Password fields.
Click on BACK to return to the previous screen, on NEXT to continue, or on EXIT to exit the
wizard without saving.
Choose your Time Zone
Select the appropriate time zone for your location from the dropdown list.
Click on BACK to return to the previous screen, on NEXT to continue, or on EXIT to exit the
wizard without saving.

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Set your Internet Connection
Glossary:
•Multiplexing - Two conventions identify what protocols a virtual circuit (VC) is carrying.
Be sure to use the multiplexing method your ISP requires:
VC-Based Multiplexing – In VC-based multiplexing, by prior mutual agreement, each
protocol is assigned to a specific virtual circuit. For example, VC1 carries IP, etc. VC-
based multiplexing may be dominant in environments where dynamic creation of large
numbers of ATM VCs is fast and economical.
LLC-Based Multiplexing – In LLC-based multiplexing, one VC carries multiple protocols
with protocol-identifying information contained in each packet header. While this method
requires extra bandwidth and processing overhead, this method may be advantageous if
it is not practical to have a separate VC for each carried protocol; for example, if charging
heavily depends on the number of simultaneous VCs.
•VPI and VCI - Be sure to use the Virtual Path Identifier (VPI) and Virtual Channel
Identifier (VCI) numbers assigned to you. The valid range for the VPI is 0 to 255. The
valid range for the VCI is 32 to 65535. 0 to 31 is reserved for local management of ATM
traffic.
•PPPoA – Point-to-Point Protocol over ATM Adaptation Layer 5 (AAL5) (PPPoA) provides
access control and billing functionality in a manner similar to dial-up services using PPP.
The router encapsulates the PPP session based on RFC1483 and sends it through ATM
PVC to the ISP’s DSLAM.
•PPPoE – Point-to-Point Protocol over Ethernet provides access control and billing
functionality in a manner similar to dial-up services using PPP. The router bridges a PPP
session over Ethernet (PPP over Ethernet, RFC 2516) from your computer to an ATM
Permanent Virtual Circuit (PVC) that connects to the ADSL Access Concentrator, where
the PPP session terminates. Single PVC can support any number of PPP sessions from
your LAN.
Select the Internet connection type you use to connect to your ISP. The following screen will
vary depending on which connection type you chose.
Click on BACK to return to the previous screen, on NEXT to continue, or on EXIT to exit the
wizard.

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•Dynamic IP Address
A dynamic IP address connection requests a new IP address from your ISP each time
you connect to it.
Enter VPI (Virtual Path Identifier), VCI (Virtual Channel Identifier) and select your
Connection Type from the dropdown list. Your ISP should provide the above
information.
Click on BACK to return to the previous screen, on NEXT to continue, or on EXIT to exit
the wizard without saving.
•Static IP Address
A static IP address connection uses the same IP each time you connect to your ISP.
Enter VPI (Virtual Path Identifier), VCI (Virtual Channel Identifier), IP Address, Subnet
mask, ISP Gateway and select your Connection Type from the dropdown list. Your ISP
should provide the above information.
Click on BACK to return to the previous screen, on NEXT to continue, or on EXIT to exit
the wizard without saving.

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•PPPoE/PPPoA
Configure connection based on PPPoE / PPPoA protocol.
Enter Username, Password, VPI (Virtual Path Identifier), VCI (Virtual Channel Identifier)
and select your Connection Type from the dropdown list. Note that you must enter the
user name exactly as your ISP assigned it. If the assigned name is in the form of
user@domain where domain identifies a service name, enter it exactly as given.
Click on BACK to return to the previous screen, on NEXT to continue, or on EXIT to exit
the wizard without saving.
•Bridge Mode
RFC 1483 explains two methods for Multi-protocol Encapsulation over AAL5. The first
method allows multiplexing of multiple protocols over just one ATM virtual circuit (LLC-
based multiplexing). The second method assumes that each individual protocol is carried
over a separate ATM virtual circuit (VC-based multiplexing). Please refer to RFC 1483 for
more information.
Enter VPI (Virtual Path Identifier), VCI (Virtual Channel Identifier) and select your
Connection Type from the dropdown list. Your ISP should provide the above
information.
Click on BACK to return to the previous screen, on NEXT to continue, or on EXIT to exit
the wizard without saving.

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Finishing the Wizard
The Quick Start wizard now has all the information it needs.
Click on BACK to make changes or correct mistakes. Click on NEXT to save the current
settings. Click on EXIT to exit the wizard without saving.
Your changes have been saved. Click on CLOSE. The Quick Start wizard window will close.
Interface Setup Tab
Glossary:
•RIP (Routing Information Protocol): Select this option to specify the RIP version,
including RIP1, RIP2-B and RIP2-M. RIP2-B & RIP2-M are both sent in RIP-2 format, the
difference is that RIP2-M using Multicast and RIP2-B using Broadcast format.
•RIP Direction: Select this option to specify the RIP direction. None is for disabling the
RIP function. Both means the ADSL Router will periodically send routing information and
accept routing information then incorporate into routing table. IN only means the ADSL
router will only accept but will not send RIP packet. OUT only means the ADSL router
will only sent but will not accept RIP packet.
•IGMP (Internet Group Multicast Protocol): It is a session-layer protocol used to
establish membership in a multicast group. The ADSL supports both IGMP version
IGMP-v1 & IGMP-v2. Select None to disable it.