Pentagram Cerberus ADSL2+ Lite User manual

User’s Manual
PENTAGRAM Cerberus
ADSL2 Wi-Fi Plus
(P6331-6)
The latest versions of manual, drivers and applications are available on
www.pentagram.eu
2008-10-09

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.......................................................................................7
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
STATUS TAB.....................................................................................................16
QUICK START TAB...........................................................................................20
CONFIGURATON TAB......................................................................................22
SAVE CONFIGURATION TO FLASH TAB........................................................60
RESTART TAB..................................................................................................60
TROUBLESHOOTING............................................................................................61
USING LEDS TO DIAGNOSE PROBLEMS.......................................................61
PROBLEMS WITH THE WEB INTERFACE ......................................................61
PROBLEMS WITH THE LOGIN USERNAME AND PASSWORD.....................62
PROBLEMS WITH LAN INTERFACE................................................................62
PROBLEMS WITH WAN INTERFACE ..............................................................62
PROBLEMS WITH THE INTERNET ACCESS..................................................63

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Cerberus ADSL2 Wi-Fi Plus (P6331-6)
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Introduction
Thank you for purchasing the Cerberus ADSL2 Wi-Fi Plus (P 6331-6) 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 Plus (P 6331-6) 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, WPA/WPA2 and WDS 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.
•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 Plus (P6311-6) 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.
•Quality of Service (QoS) gives you full control over which types of outgoing data traffic
should be given priority by the router, ensuring important data like gaming packets,
customer information, or management information move through the router ay lightning
speed, even under heavy load. The QoS features are configurable by source IP address,
destination IP address, protocol, and port. You can throttle the speed at which different
types of outgoing data pass through the router, to ensure P2P users don’t saturate
upload bandwidth, or office browsing doesn’t bring client web serving to a halt. In
addition, or alternatively, you can simply change the priority of different types of upload
data and let the router sort out the actual speeds.
•High Speed Internet Access: downstream rates of up to 24Mbps and upstream rates of
up to 1Mbps. Cerberus ADSL2 Wi-Fi Plus (P6311-6) 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+),
ITU-T G.994.1 (G.hs),
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),
The router also supports VC-based and LLC-based multiplexing.

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Package Contents
1. PENTAGRAM Cerberus ADSL2 Wi-Fi Plus (P6331-6)
2. Power adapter 12 V, 1 A
3. Ethernet cable (RJ-45)
4. Telephone cable (RJ-11)
5. CD
6. Quick Installation Guide
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
PWR Off No power is supplied to the device
Steady light Connected to an AC power supply
SYS Steady light System is ready
WLAN Off Access point is disabled
Steady light Access point is enabled
Blinking light Transmitting/Receiving data
LAN (1-4) Off No Ethernet connection
Steady light Connected to an Ethernet port
Blinking light Transmitting/Receiving data
ADSL Off No ADSL signal
Steady light ADSL signal is established
Blinking Light Establishing ADSL signal
PPP Steady light PPPoA / PPPoE connection established

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Back Panel
Label Used for...
RP-SMA Connector Connecting the external antenna
LINE (RJ-11) Connecting the telephone cable
LAN 1-4 (RJ-45) Connecting with computers/devices through Ethernet cable
RESET Resetting the device.
PWR Connecting with supplied power adapter
ON/OFF Switching the device on/off
Default Settings
Before changing configuration familiarize yourself with these default settings.
IP Address 192.168.1.100
Subnet Mask 255. 255. 255.0
SSID Pentagram P 6331-6
DHCP Server Enabled
DHCP Server IP Address Pool 100 IP addresses
from 192.168.1.101
IP Address Lease Time 43200 seconds (12 hours)
User Name admin
Password pentagram
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.
•Hold the RESET button until the LEDs all turn Off, turn On and then turn Off. The router
performs configuration factory reset and the router reboots. You can then access the
router from the web GUI.
Connecting Cerberus to Computer.
Cerberus can be connected to computer via Ethernet or WLAN:
Connecting via Ethernet Port (Ethernet Card)
All Ethernet ports of router are made in the technology, which automatically activates
Crossover if necessary. Thanks to autonegotiation of connection speed the router will
automatically select the maximum available speed rate. Transfer at 10/100 Mbit/s rate
requires the category 5 cable wired with RJ-45 connectors. In case of "straight" cable both
connectors must be crimped in standard EIA/TIA 568B. In case of Crossover cable one
connector must be in standard EIA/TIA 56A, and the second in EIA/TIA 568B. After connecting
the device to one of the ports, corresponding LED will begin to blink. That signals the process
of the auto-checking of port and the negotiation of connection speed rate.
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
After connecting the computer to the router (by LAN adapter or WLAN interface) the TCP/IP
protocol should be configured. The protocol should be automatically installed together with
Network card drivers. It is advised that TCP/IP should be configured to receive IP address and
all the necessary network parameters from DHCP server automatically. You can find step-by-
step configuration for different Windows systems below.
Note: In some cases computer with Windows Vista or Windows XP SP3 cannot obtain an IP
address from router’s DHCP server. If you encounter this, follow this steps to resolve this
problem (Microsoft Support page) http://support.microsoft.com/kb/928233/en-us (this article
may be not available in user language).

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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:
1. click Start > Run
2. type cmd (Win 2000/XP) or command (Win 95/98/ME) and press Enter
3. in command line type ipconfig /all and press Enter
4. check if the IP Address is 192.168.1.x

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Configure router via web browser
Cerberus ADSL2 Wi-Fi Plus (P6331-6) 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://192.168.1.100
3. Enter username and password – default admin / pentagram

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Navigation
Buttons
•Save Settings – Opens Save Config to FLASH page.
•Restart Router – Opens Restart page.
Tabs
The web interface includes the following tabs:
•Status (ARP Table, Wireless Association, Routing Table, DHCP Table, System Log,
Security Log)
•Quick Start
•Configuration (LAN, WAN, System, Firewall, QoS, Virtual Server, Advanced)
•Save Config to FLASH

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Status Tab
Device Information
•Host Name – Provide a name for the router for identification purposes. Host Name lets
you change the router name.
•System Up-Time – Records system up-time.
•Current Time – Set the current time. See the Time Zone section for more information.
•Hardware Version – Chipset version
•Software Version – Firmware version
•LAN MAC Address – The LAN MAC address
•WAN MAC Address – The WAN MAC address
•Home URL – Connects to the Home Website.
LAN
•IP Address – LAN port IP address.
•Sub Net Mask – LAN port IP subnet mask.
•DHCP Server – LAN port DHCP role - Server, Relay or None.

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WAN
•IP WAN – Name of the WAN connection.
•VPI/VCI – Virtual Path Identifier and Virtual Channel Identifier
•Connection – Selects “Disconnected” or “Connected”
•IP Address – WAN port IP address.
•Net mask – WAN port IP subnet mask.
•Gateway – The IP address of the default gateway.
Port Status
User can look up for your connected condition
Status / ARP Table
The router’s ARP (Address Resolution Protocol) Table shows the mapping of Internet (IP)
addresses to Ethernet (MAC) addresses. This is a quick way to determine the MAC address of
the network interface of your PCs to use with the router’s Firewall – MAC Address Filter
function. See the Firewall section of this manual for more information.
•IP Address – A list of IP addresses of devices on your LAN (Local Area Network).
•MAC Address – MAC (Media Access Control) address for each device on your LAN.
•Interface – The interface name (on the router) that this IP Address connects to.
•Static – Static status of the ARP table entry:
no for dynamically-generated ARP table entries
yes for static ARP table entries added by the user
Status / Wireless Association
IP Address – It is IP Address of wireless client that join this network.
MAC – The MAC address of wireless client.

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Status / Routing Table
#– Item number
Destination – IP address of the destination network.
Netmask – The destination netmask address.
Gateway/Interface – IP address of the gateway or existing interface that this route uses.
Cost – The cost of transmission for routing purposes. The number need not be precise,
but it must be between 0 and 65535.
Interface – Select the interface through which packets are forwarded.
Status / DHCP Table
Leased – DHCP assigned IP addresses information.
IP Address – IP addresses of devices on your LAN (Local Area Network).
MAC Address – The MAC Address that you want to assign the fixed IP address
Client Host Name – Expired IP addresses information
Register Time – Register time information

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Status / System Log
Display system logs accumulated up to the present time. You can trace historical information
with this function.
Status / Security Log
This screen displays security log information. If a hacker attacks your server, he is isolated
by the firewall function and the router records related information. This helps you know
where the hacker comes from.

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Quick Start Tab
For detailed instructions on configuring WAN settings, see the WAN section of this manual.
The information you need for the Quick Start wizard to get you online are your login (often in
the form of username@ispname), your password, and the encapsulation type.
Your ISP can supply all the details you need. Alternatively, if you have deleted the current
WAN Connection in the WAN – ISP section of the interface, you can use the router’s PVC
Scan feature to determine the Encapsulation types offered by your ISP.
Connection
Encapsulation – Select the encapsulation type your ISP uses or choose Auto Scan.
Click Start to begin scanning for encapsulation types offered by your ISP. If the scan is
successful, you are presented with a list of supported options.
VCI – Enter the VCI assigned to you. This field may already be configured.
VPI – Enter the VPI assigned to you. This field may already be configured.
NAT – Select “Enabled” or “Disabled”.
Optional Setting
IP Address – Type your ISP assigned IP address in the IP Address text box.
Subnet Mask – Enter a subnet mask in dotted decimal notation.
Default Gateway – You must specify a gateway IP address (supplied by your ISP)