Nokia M5122 User manual

Nokia M5122
T66250
USER MANUAL
ADSL Bridgeā

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Nokia M5122
ADSL Bridge
User Manual
C33874.21B0
02.11.2000
1 Introduction to Nokia M5122
Nokia M5122 is an ADSL bridge which enables high-speed Internet
access and LAN interconnection. It increases the capacity of the
already installed telephone lines used traditionally for telephone
services. M5122 enables high-speedconnections for homesandsmall
offices.
Figure 1 Nokia M5122
NokiaM5122allowsmultiplePCsequippedwitha10Base-TEthernet
interface to be connected to a remote network via a Digital Subscriber
Line Access Multiplexer (DSLAM) and an ATM access network. It
acts as a bridge between the Ethernet LAN and ADSL/ATM network
interfaces. An in-built 4-port hub allows easy home and small office
network installation.

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2 Installing M5122
Before installing M5122, you may want to familiarise yourself with
the interfaces and indicator lights of M5122. From section 2.3, you
will find a step-by-step installation procedure, which shows the
physical installation of M5122.
2.1 Interfaces
M5122 has one ADSL line interface and four Ethernet interfaces
(10Base-T). It also has a Command Line Interface (CLI) for
management purposes. The ADSL line interface is compatible with
ITU-T G.992.1 specification.
ADSL line (DSL)
Ethernet ports
(ETH-1, ETH-2,
ETH-3, ETH-4)
Command line interface (CLI)
Mains connector
Power switch
Figure 2 M5122 back panel
2.2 Indicator lights
M5122 has eight indicator lights on the front panel: PWR, STA, COL,
ETH-1, ETH-2, ETH-3,ETH-4, and DSL.STA indicator is red. Other
indicators are green.

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Figure 3 M5122 front panel indicators
DSL GREEN
Off ADSL link is down.
Blinks ADSL connection is being established.
On ADSL link is up.
ETH- GREEN
Off Ethernet is down.
On 10Base-T Ethernet is functional.
Blinks Receives traffic from Ethernet.
COL GREEN
Blinks Collisions on the Ethernet. Note, that it is normal that some
collisions occur on the Ethernet.
STA RED
Off OK
On Hardware malfunction during startup.
PWR GREEN
Off Power off.
On Power on.

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2.3 Step-by-step installation procedures
In this section, we present two installation procedures: ADSL data
servicesandTelephoneandADSLdataservices.Tousebothtelephone
and ADSL services, you will need a POTS splitter. This manual gives
installation example for a Nokia splitter T66270.
In these examples, we assume that you have installed your Ethernet
card properly and that your service provider has provided you with
instructions how to set your PC’s networking options.
ADSL data services
1. 2.
3.
4. 5.
Figure 4 M5122 with cables connected (ADSL services only)
1. Plug the mains power cord to a mains outlet. M5122 can be
connected to an earthed socket outlet only.
2. SwitchonM5122.ThePWRindicatorlightsup.After awhile,the
red STA indicator blinks and then remains unlit. M5122 is now
functional.
3. Connect the Ethernet cable between your PC’s 10Base-T
connector and the Ethernet connector on the M5122 back panel
(ETH-1, ETH-2, ETH-3, or ETH-4).
4. Switchonyour PC. The indicatorcorresponding the Ethernet port
you connected your PC to becomes green when your PC has
started. This indicator blinks when there is traffic in the
corresponding Ethernet port.

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5. Connect the ADSL line cable between the DSL connector on the
M5122 back panel and the wall socket. After a while, the DSL
indicatorstartsblinking.ThisindicatesthattheADSLlineisbeing
established. When the DSL indicator remains lit, the line is
functional.
6. Duringnormal operation PWR and DSL indicators are lit and the
Ethernetindicators of the active Ethernet ports blink or remain lit
dependingwhetherthereistrafficornot.COLindicatormayblink
occasionally during normal operation.

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Telephone and ADSL data services with T66270 splitter
1.1.
2.
3.
4. 5.
6.
7.
Figure 5 M5122 with cables and splitter (T66270) connected
(Telephone and ADSL services)
1. Plug the mains power cord to a mains outlet. M5122 can be
connected to an earthed socket outlet only.
2. SwitchonM5122.ThePWRindicatorlightsup.After awhile,the
red STA indicator blinks and then remains unlit. M5122 is now
functional.
3. Connect the Ethernet cable between your PC’s 10Base-T
connector and the Ethernet connector on the M5122 back panel
(ETH-1, ETH-2, ETH-3, or ETH-4).
4. Switchonyour PC. The indicatorcorresponding the Ethernet port
you connected your PC to becomes green when your PC has
started. This indicator blinks when there is traffic in the
corresponding Ethernet port.
5. Connect the ADSL line cable between the DSL connector on the
M5122 back panel and the splitter’s MODEM connector.
6. Connect the splitter cable between the splitter’s LINE connector
and the wall socket. After a while, the DSL indicator starts
blinking. This indicates that the ADSL line is being established.
When the DSL indicator remains lit, the line is functional.
7. Connect the telephone to the splitter’s PHONE connector.

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8. Duringnormal operation PWR and DSL indicators are lit and the
Ethernetindicators of the active Ethernet ports blink or remain lit
dependingwhetherthereistrafficornot.COLindicatormayblink
occasionally during normal operation.
NowyourM5122hasbeenconnectedandyoucanconfigureyourPC’s
networkingoptionsandcheckthattheserviceworksaccordingtoyour
service provider’s instructions.
2.4 Troubleshooting
This section gives some tips for troubleshooting.
Power (PWR) indicator is unlit.
Make sure that power cord has been connected to a mains outlet and
M5122 has been switched on.
Red status (STA) indicator is lit
Switch power off and then on again. If the STA indicator remains lit,
the unit may be faulty.
ADSL (DSL) indicator is unlit
Make sure that the ADSL line cable has been properly connected
between the DSL connector and the wall socket.
Ethernet (ETH-) indicator is unlit
Make sure that the Ethernet cable has been properly connected
between your PC’s Ethernet interface and the M5122 ETH connector.
Make sure that your PC is ON.
You cannot access the Internet
1. Make sure that your M5122 is ON.
2. Check that the DSL indicator is lit.
3. CheckthatEthernet indicator(ETH-1, ETH-2,ETH-3,orETH-4)
corresponding to the Ethernet interface you are connected to is
ON.
4. Make sure that your PC’s networking functions have been
configured according to your service provider’s instructions.

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2.5 Installing M5122 on the wall
M5122 can also be wall mounted. Figure 6 shows the installation
procedure.
1. Drill two holes (6 mm in diameter) on the wall. The distance
between the holes must be 155 mm. Insert the plugs to the holes
and fix the screws.
2. Mount the modem on the wall as shown in Figure 6.
1.
2.
155 mm
6 mm
Figure 6 Wall installation

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3 Configuring M5122
Your service provider has configured your M5122 for the service. Do
not change settings unless specifically asked by your service
provider. You can change M5122 settings with an ordinary web
browser, such as Microsoft Internet Explorer or Netscape Navigator.
UseaPCconnectedtoanETHportofM5122forconfiguration.Inthis
case the corresponding ETH indicator should be lit.
3.1 Browser management
The web configuration pages of M5122 can be accessed through the
Ethernetand through theADSL/ATM channels of M5122. In order to
access the web management feature, the IP functionality must be
activated and an IP address must be given to the corresponding
interface.
You can use your PC’s web browser software to access the web
configuration pages in M5122. To access the web pages you must
know the IP address of your M5122 or, alternatively, the “name”that
your M5122 recognises.
Note
Before using your web browser for configuration, you must know the
IP address or the name assigned to your M5122.
TherearethreewaystofindoutwhethertouseanameoranIPaddress:
DYour service provider has given you an IP address for M5122.
DYour M5122 uses DynamicHost ConfigurationProtocol(DHCP)
and Domain Name Server. In this case the name is M5122.
DYour M5122 uses DHCP. In this case run winipcfg.exe (Windows
95)oripconfig.exe(WindowsNT).TheIPaddressofM5122isthe
Default Gateway address shown by the ipconfig program.
3.1.1 Opening a connection
To open a connection to the Nokia M5122:
1. Start your web browser.

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2. Enter the name (’M5122’) or IP address of your Nokia M5122 in
the browser’s Open Location field and press Enter. If you use the
IPaddress,ithas tobe assignedtoalocalportorgatewayinterface
(Vbridge).
3. Type in the username/password as requested. If no
username/password is required, just click OK to proceed. The
Nokia M5122 Main Page appears.

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3.1.2 Main Page
Main Page is shown first when you use a web browser to connect to
M5122. The currently shown page is shown highlighted on the list on
theleft.Clickinganitemonthelist(ServiceProviders,LocalNetwork,
Statistics, Restart, and Save Config) takes you to the corresponding
page.
Note
Whenyoumake modifications tothe configuration,remember tosave
the configuration if you want your changes to be active after a restart.
Figure 7 Main page
The Main Page shows you the statuses of the DSL line and Ethernet
interfaces. Software and hardware versions and the serial number of
M5122 are shown in the bottom of the page.

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3.1.3 Service providers page
Youcanviewnetworkconnectioninformation(ATMchannelnumber,
VPI and VCI values, and encapsulation) by selecting the connection
from the pulldown list. Figure 8 shows the page with eth-llc
encapsulation enabled and Figure 9 with PPTP tunneling enabled.
Connection name (Figure 9) is used for identifying connections. The
name can be changed and it can be 31 characters long.
Figure 8 Service Providers page with eth-llc encapsulation
Figure 9 Service Providers page with PPTP tunneling enabled

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3.1.4 Local network pages
The Local Network page as three sub pages: Local ports, DHCP, and
Routing.
Local ports page
On the Local Network Local Ports sub page you can assign an IP
address to the Gateway port (Vbridge).
Note
WhenyouclickApply,theIPaddressischangedimmediately.IftheIP
address of the interface you are using changes the connection will be
lost. You have to reconfigure the IP address of the accessing host. For
example, in Windows programs winipcfg.exe or ipconfig.exe must be
used first to release the old address and then to renew to request new
address.
Figure 10 Local Network Local Ports page

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DHCP page
Note
Use DHCP with PPTP tunneling only.
On the Local Network DHCP subpage you can enable/disable
Dynamic Host Control Protocol and set the Address ranges from
which the addresses are distributed to the DHCP clients on your
network. You can also set the Domain Name Server addresses here.
Start address is the first address in the address range. The Range size
defines how many addresses the range contains. Subnet mask is the
subnet mask of the addresses in the range. Primary and Secondary
DNSs set the domain name servers for the corresponding address
range. Lease time defines how often the DHCP client must renew its
lease. Domain name defines the domain name for the range.
TheDHCPservercanbeenabledtowardsLANandVbridge(gateway
interface) ports. When the DHCP server is enabled, up to two scopes
(address ranges) are automatically generated and bound to Vbridge
interface. Two separate address ranges can be used if more than 253
addresses are required on the local subnet, if two non-contiguous
ranges are needed, or if an additional router with DHCP relay is used
onthelocalnetwork.InFigure11,scope(a)hasbeenboundtoVbridge
interface. When the address ranges are not defined, M5122 uses the
default values for all DHCP parameters. The default values are:
DStart address is the interface IP address
DSubnet mask 255.255.255.0
DRange size of up to 253 addresses starting from the interface IP
address.
DDNS address is the interface IP address
DLease time is 60 minutes
DDomain name is null string
If at least one address range has been defined, then IP address, DNS,
domain name and lease time, if defined, override the default values.

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Figure 11 Local Network DHCP page

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Routing page
On the Local Network Routing sub page you can set static routes and
enable/disable dynamic routing protocols (Routing Information
Protocol versions 1 and 2).
To enable dynamic routing select the Routing protocol version from
thepull-down list and click the Apply button. RIP versions 1and 2 are
supported. Both v1 and v2 option enables the receiving of both RIPv1
and RIPv2 packets.
To add a static route, type in the Destination network IP address, the
Subnet mask of the destination network, and the Gateway and the
Interfacethroughwhich thedestination networkcan bereached.Then
click the Add new button.
Figure 12 Local Network Routing page

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3.1.5 Statistics page
The Statistics page lets you view a selection of M5122 statistics. to
view statistics of a particular function, click the corresponding button
and the statistics view is opened on a separate window.
Figure 13 Statistics page

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3.1.6 Restart page
On the Restart page, you can reset subsystems and restart M5122.
Figure 14 Restart page

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3.1.7 Save configuration page
When you change the configuration, all configuration changes are
activated immediately without restart/reload. However, the
configurationwillnotbesavedintothenonvolatilememory.IfM5122
isrestarted orpowered down withoutsavingtheconfiguration,theold
configurationwill be restored. Clicking the Save configuration button
saves the configuration into the nonvolatile memory and the old
configuration cannot be restored through the web interface.
Figure 15 Save configuration page
4 Features
M5122 can operate as a bridge between the Ethernet and the virtual
channels of ADSL/ATM interfaces.
4.1 Bridging
M5122 operates as a self-learning bridge supporting up to 1024 MAC
addresses.BridgingindonebetweentheEthernet10Base-Tinterfaces
and the ATM/ADSL interface.
4.2 ATM and ADSL
M5122 supports eight ATM/ADSL virtual channel connections
(VCC). The factory default setting is one VCC with virtual path
identifier (VPI) 0 and virtual channel identifier (VCI) 100. The ATM
channel supports UBR (Unspecified bit rate) traffic shaping. The