Pentagram Cerberus ADSL2+ Lite User manual

2007-06-05
Installation and User’s Manual
PENTAGRAM Cerberus
ADSL2+ Wi-Fi
(P 6331-5)
The latest versions of manual, drivers and applications are available on
www.pentagram.eu

NOTE! Any information and technical data are subject to change without prior notification
and/or indication in this manual.
© 2007 PENTAGRAM
All rights reserved; copying and reproduction is strictly forbidden.

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INDEX
INTRODUCTION ................................................................................................. 5
FEATURES..................................................................................................... 5
PACKAGE CONTENTS................................................................................... 6
PRODUCT OVERVIEW ....................................................................................... 7
IMPORTANT NOTES ...................................................................................... 7
FRONT PANEL ............................................................................................... 7
BACK PANEL.................................................................................................. 8
DEFAULT SETTINGS ..................................................................................... 8
RESETTING ROUTER .................................................................................... 9
CONNECTING CERBERUS TO COMPUTER.................................................. 9
CONFIGURE TCP/IP....................................................................................... 9
CONFIGURE ROUTER VIA WEB BROWSER.................................................... 14
LOGIN .......................................................................................................... 14
NAVIGATION................................................................................................ 15
SETUP TAB.................................................................................................. 17
BASIC TAB ................................................................................................... 20
ADVANCED TAB .......................................................................................... 24
WIRELESS TAB............................................................................................ 56
SECURITY TAB ............................................................................................ 63
STATUS TAB................................................................................................ 66
HELP TAB .................................................................................................... 72
TROUBLESHOOTING ....................................................................................... 73
USING LEDS TO DIAGNOSE PROBLEMS.................................................... 73
PROBLEMS WITH THE WEB INTERFACE.................................................... 73
PROBLEMS WITH THE LOGIN USERNAME AND PASSWORD.................... 74
PROBLEMS WITH LAN INTERFACE ............................................................ 74
PROBLEMS WITH WAN INTERFACE ........................................................... 74
PROBLEMS WITH THE INTERNET ACCESS................................................ 75

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Introduction
Thank you for purchasing the Cerberus ADSL2+ Wi-Fi ADSL2+ Modem/Router by
PENTAGRAM. Your new router is an all-in-one unit that combines an ADSL modem, ADSL
router, Ethernet network switch and wireless Access Point to provide everything you need to
get the machines on your network connected to the Internet over an ADSL broadband
connection.
The Cerberus ADSL2+ Wi-Fi 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.
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 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.

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•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.
•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 ADSL2+ Wi-Fi 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),
ITU-T G.992.3 (ADSL2 G.dmt.bis),
ITU-T G.992.5 (ADSL2+),
Reach Extended ADSL (RE ADSL).
•Multi-Protocol to Establish a Connection: The router supports following protocols to
establish a connection with an ISP:
PPPoA (PPP over ATM Adaptation Layer 5 – RFC 2364),
PPPoE (PPP over Ethernet – RFC 2516)
RFC 1483/2684 encapsulation over ATM (bridged or routed),
CLIP (RFC 2225, previously IPoA – RFC 1577)
The router also supports VC-based and LLC-based multiplexing.
Package Contents
1. PENTAGRAM Cerberus ADSL2+ Wi-Fi
2. Power adapter 9 V, 1 A
3. Ethernet cable (RJ-45)
4. Telephone cable (RJ-11)
5. CD
6. Quick Installation Guide

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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 Panel
LED Action Description
POWER Off No power is supplied to the device
Steady light Connected to an AC power supply
ETHERNET Off No Ethernet connection
Steady light Connected to an Ethernet port
Blinking Light Transmitting/Receiving data
WIRELESS Off Access point is disabled
Steady light Access point is enabled
Blinking Light Transmitting/Receiving data
ADSL Off No ADSL signal
Steady light ADSL signal is established
Blinking Light Establishing ADSL signal
INTERNET Off No internet connection
Steady light Connected to the Internet
Blinking Light Transmitting/Receiving data

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Back Panel
Label Used for...
ADSL (RJ-11) Connecting the telephone cable
ETHERNET 1-4 (RJ-45) Connecting with computers/devices through Ethernet cable
RESET Resetting the device. Press for 10 seconds to reset
9V DC Connecting with supplied power adapter (9V 1A)
ON/OFF Switching the device on/off
Default Settings
Before changing configuration familiarize yourself with these default settings.
IP Address 192.168.1.1
Subnet Mask 255. 255. 255.0
SSID yournetworkname
DHCP Server Enabled
DHCP Server IP Address Pool 253 IP addresses
from 192.168.1.2
IP Address Lease Time 3600 seconds (1 hour)
User Name admin
Password admin
It is recommended to set username and password as soon as possible.
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 about 2 minutes for router initialization.
•Press and hold RESET button on the back panel of router for 10 seconds.
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 ADSL2+ Wi-
Fi router properly. Computer must be either equipped with network adapter connected directly
to ADSL2+ Wi-Fi 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 ADSL2+ Wi-Fi router
via network hub/switch. Default IP address of the router is 192.168.1.1 and subnet mask is
255.255.255.0. 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 Vista
Note: Network configuration require administrator privileges. When User Account Control
window pops up, either click Continue (Administrator user) or select Administrator user and
enter valid password (Standard user).
1. Click Start →Control Panel.
2. Click View network status and tasks.
3. Click View status for appropriate
connection.
4. On General tab, Click the Properties
button.
5. On General tab, select Internet Protocol
Version 4 (TCP/IPv4) and click
Properties.

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6. On General tab, select Obtain an IP
address automatically and Obtain DNS
server address automatically.
7. Click OK to save settings and close
Internet Protocol Version 4 (TCP/IPv4)
Properties window.

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

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Windows 95/98/Me
1. Click Start →Settings →Control Panel.
Double-click the Network icon.
2. On Configuration tab, select TCP/IP for
appropriate network adapter and click
Properties.
3. On IP Address tab, select Obtain an IP
address automatically.
4. On DNS Configuration tab, select Disable
DNS
5. Click OK to save settings and close TCP/IP
Properties window.
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 95/98/ME). In
command line type ipconfig /all and check that value of the IP Address is 192.168.1.x

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Configure router via web browser
Cerberus ADSL2+ Wi-Fi 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. In address bar enter the default IP address: http://192.168.1.1
3. Enter username and password – default admin / admin

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Navigation
Buttons
•Apply – Click to implement the configuration changes. Clicking Apply will not implement
the changes when the router is restarted.
•Cancel – Click to revert to the last saved configuration.
Commands
•Save Settings – Click to permanently apply configuration changes.
•Restart Access Point – Restarts the wireless connection
•Restart Router – Restarts the router.
Tabs
The web interface includes the following tabs:
•Setup
•Basic
•Advanced
•Wireless
•Security
•Status
•Help

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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.

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Setup Tab
This tab allows you to complete the initial device configuration. It is strongly recommended to
use Setup to configure your settings.
Click Step 1: Internet Login Account Setting to continue.
Internet Login Account Setting
Enter User ID, Password, VPI (Virtual Path Identifier), VCI (Virtual Channel Identifier) and
select your Protocol (Encapsulation) 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 Previous to return to the previous screen or Next to continue.

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Wireless LAN Configuration
Enter Wireless Network Name / SSID or click Generate SSID to automatically generate
unique SSID for your WLAN. Also from the dropdown lists select your Country Standard,
Wireless Channel and choose from Hide your Wireless Network Name / SSID whether your
network SSID will be hidden.
Click Previous to return to the previous screen or Next to continue.
Wireless LAN Security
Select Enable Wireless Security checkbox (strongly recommended), from Cipher dropdown
list choose key length (64 bits or 128 bits) and either Generate or enter your own Encryption
Key. This will enable WEP authentication, you can change WEP Key or select different
authentication type at any time in Security menu of Wireless Tab.
Click Previous to return to the previous screen or Next to continue.

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System Password
Select Enable Authentication checkbox (strongly recommended), enter User Name and
password in Password and Confirmed Password fields and enter Idle Timeout. Use
entered User Name and Password when accessing router’s Web Interface.
Click Previous to return to the previous screen or Next to continue.
Summary
If information on this page is correct you can save or print this page.
Click Previous to return to the previous screen or Finish to save settings and restart router.

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Basic Tab
This tab provides most basic information and configuration you need to configure router.
Home
On this page you will find all information regarding connection, router and local/wireless
network. If Internet connection is Down click Connect and router will try to establish
connection.