3Com OfficeConnect 3C891A Manual de instrucciones

Part No. 1-024-2301

Published October 1999

FFICE

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ISDN LAN M

ODEM

ELEASE

OTE

V. 6.2.0 (ST)

AND

5.3.0 (U)

Introduction

This release note describes the following enhancements made to the

OfﬁceConnect ISDN LAN Modem as part of the latest ﬁrmware releases.

■

Enhanced Dial-in Support

■

Callback Feature

■

Upgrade Check Feature

■

Local DNS Table

■

LAN Modem Desktop Manager (Windows 95/98/NT)

■

Miscellaneous Enhancements

Enhanced Dial-in

Support

Previously, the LAN Modem provided limited dial-in capability, such as accessing a

remotely located LAN Modem for remote conﬁguration or to check statistics. Now

Dial-in support has been enhanced to extend access to workstations or servers

located behind a remote LAN Modem.

Dial-in Applications

The following dial-in scenarios are supported by the LAN Modem. If you would

like more detailed descriptions of these scenarios, refer to “Understanding the

Three Dial-in Scenarios” later in this release note.

Dial-In

Wizard

Profile Name Network Scenario

Single User Terminal adapter calls into a LAN Modem.

Public telephone

network

ALERT

LANSTATUS

POWERB1B2TX1234

COLL

ISDN

ISDNLANModem

3C892

Small office LAN

OfficeConnect

ISDN LAN Modem

ISDN BRI line

Terminal adapter

(ISDN modem)

Telecommuter

PWRTESTDB1 B2 SD RD DTR

3Com

Impact IQ

3Com

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V. 6.2.0 (ST)

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5.3.0 (U)

Single User Router (such as a LAN Modem) running NAT calls into a LAN Modem.

LAN Modem

Site to Site LAN Modem to LAN Modem

Advanced Router other than a LAN Modem calls into a LAN Modem

Dial-In

Wizard

Profile Name Network Scenario

Public telephone

network

ALERT

LANSTATUS

POWERB1B2TX1234

COLL

ISDN

ISDNLANModem

3C892

Small office LAN

OfficeConnect

ISDN LAN Modem

ISDN BRI line

Router running NAT

Home office with multiple users

Public telephone

network

Small office LAN Small office LAN

OfficeConnect

ISDN LAN Modem

ISDN BRI line

OfficeConnect

ISDN LAN Modem

Public telephone

network

Small office LAN Office LAN

OfficeConnect

ISDN LAN Modem Router (other than

LAN Modem)

ISDN BRI line



Moreconnected

3Com

StatusReset

31/2 3/434RX

LAN

RemoteAccessSystem1500

WAN

Power

BRIISDNU

ANALOG

SLOT1 SLOT2

STACKNET

CONSOLE

SUPER

STACK

3Com

Status Reset

31/2 3/4 34

LAN

RemoteAccess System 1500

WAN

Power

BRIISDNU

SLOT1 SLOT2

STACKNET

CONSOLE

SUPER

STACK

3Com

Configuring Dial-In

Conﬁguring Dial-In

There are three main steps for conﬁguring dial-in support.

Change remote administration password

Create dial-in user proﬁle on server or central site

Create service provider proﬁle on client or remote site

Before you Begin

Before you begin conﬁguration, please note the following:

■

Any remotely-located device you wish to access on the remote LAN Modem

must be running appropriate software, such as a Web or FTP server.

Examples of server software are Apple’s Personal Web Sharing for the

Macintosh or Microsoft’s Peer Web Services for Windows 95/98. Check with

your computer’s accompanying documentation for more information

■

A LAN Modem can only accept dial-in calls from a device that matches its own

call type.

For instance, an ISDN LAN Modem will only accept dial-in calls from an ISDN

terminal adapter or another ISDN LAN Modem or router. Calls from a 56K LAN

Modem or other analog modems are not permitted for dial-in access.

Changing the Remote

Administration

Password

Previously, when dialing into a LAN Modem to conﬁgure it remotely or check

statistics, you were prompted to enter the password associated with the LAN

Modem’s conﬁguration parameters. Additional security has now been added

which requires a unique user name and password for remote access. This is

referred to as the Remote Admin account and is reserved for remote conﬁguration

only. This account does not provide dial-in access to LAN or WAN resources other

than the LAN Modem conﬁguration parameters themselves. By default the user

name is

Admin

and the password is

1234

. Note that the username and password

is case sensitive.

To change the default username and password (recommended), do the following.

Click the

Dial-in

button located on the LAN Modem’s mainpage.

The Dial-in Conﬁguration submenu opens.

Click the

Dial-in Users

button.

The Dial-in User Selection screen opens.

Select

Admin

and then click

In the Username ﬁeld, delete the default name and then enter the new name.

In the Password ﬁeld, delete the default password and then enter the password.

FFICE

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V. 6.2.0 (ST)

AND

5.3.0 (U)

Conﬁguring the

Server LAN Modem

Conﬁguring the server LAN Modem for Dial-in support requires two main steps:

■

Conﬁgure global dial-in parameters

■

Create a dial-in user proﬁle for each dial-in connection you require

Conﬁguring global dial-in parameters

Dial-in Global parameters allow you to allocate B channel resources and set dial-in

authentication preferences to be used for all dial-in users.

From the LAN Modem’s main conﬁguration page, click

Dial-In

Figure 1

LAN Modem Main Conﬁguration Page

Configuring the Server LAN Modem

Click

Dial-in Global

Figure 2

Dial-In Global Parameters Screen

In the Channels allocated for Dial-in ﬁeld, select

to limit available dial-in channels

to one (the default). Choose

to allow either a single-user Multilink PPP dial-in, or

to allow two different dial-in users simultaneous access. Note that if two

simultaneous dial-in users are connected, outgoing calls from the server LAN

Modem are unavailable.

In the Allow Multilink ﬁeld, select the checkbox to use both B channels for each

dial-in call if requested by the dial-in user, or leave this box unchecked

to use one

B channel per dial-in call. Note that if you choose to allow Multilink, both B

channels will be used for the dial-in call, however one B channel will be dropped

when outgoing calls are placed from the server LAN Modem. Multilink is disabled

by default.

In the Callback Preﬁx ﬁeld, if a telephone number preﬁx is required to get an

outside line, such as a 9, enter that number. Otherwise, leave this ﬁeld blank.

In the LAN to LAN Site Number, designate the LAN Modem site for dial-in access

from other LAN Modems which will employ the LAN Modem Site-to-Site scenario.

Note that setting the site number may change the IP address of the LAN Modem,

as described below.

■

Choose

Site A

to designate this LAN Modem’s IP address as 192.168.1.1 (the

LAN Modem’s default IP address, unless it has been changed).

■

Choose

Site B

if this LAN Modem will place or receive calls to another LAN

Modem which has been conﬁgured as Site A. Choosing

Site B

will change this

LAN Modem’s default IP address to 192.168.2.1

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For example, if you have already designated a remote LAN Modem as

Site A, and you are now setting up a second LAN Modem for LAN-to-LAN

connectivity, you would designate this second LAN Modem as Site B. This

will differentiate between the two IP addresses, which by default are the

same.

■

Choose

Site C

if this LAN Modem will place or receive calls to another LAN

Modem previously conﬁgured as Site A or Site B. Choosing

Site C

will change

this LAN Modem’s default IP address to 192.168.3.1

■

Choose

None

(the default) to leave the LAN Modem’s IP address unchanged.

You might choose

None

if you will never employ the LAN Modem Site-to-Site

scenario with this LAN Modem (that is, all of your dial-in users will employ the

Single-User Dial-in scenario), or an advanced user might choose this option if

the IP address of the LAN Modem has been manually conﬁgured for static IP

addressing.

7In the PPP Authentication ﬁeld, choose the type of PPP authentication you want

the LAN Modem to use when negotiating dial-in access. By default, PAP, CHAP

and MS-CHAP are enabled. This means that if the client side can do any of the

three, authentication will be successful. Note that at least one must be enabled.

8Click Submit to save changes. If you chose Site B or Site C as the LAN to LAN Site

Number, the LAN Modem will re-initialize as its IP address is reset. The front panel

LEDs ﬂash, indicating a reset in progress.

Once the LAN Modem IP address has been changed, you can no longer access the

LAN Modem until your workstation has been restarted and has acquired an IP

address belonging to the new LAN Modem subnet.

Create a Dial-In User

Proﬁle Using the Dial-In

Wizard

Before dialing into the LAN Modem, a dial-in user proﬁle must be created for every

user or site that requires access. To create a dial-in user proﬁle on the central site

using the Dial-In Wizard, refer to the appropriate application below for speciﬁc

Dial-In Wizard instructions. For more detailed descriptions of these scenarios, refer

to “Understanding the Three Dial-in Scenarios” later in this release note.

■Single User dial-in (Terminal adapter or a router, such as a LAN Modem,

running NAT)

■LAN Modem Site-to-Site dial-in (LAN to LAN bidirectional connectivity)

■Advanced dial-in (unknown router dialing into a LAN Modem)

Single User Dial-In Wizard Instructions

1From the LAN Modem main conﬁguration page, click Dial-in.

2Click Dial-in Wizard.

The Dial-in Wizard screen opens, as shown in Figure 3.

Configuring the Server LAN Modem 7

Figure 3 Dial-In Wizard Proﬁle Type Selection Page

8OFFICECONNECT ISDN LAN MODEM RELEASE NOTE V. 6.2.0 (ST) AND 5.3.0 (U)

3Select Single User and then click Next.

The Username and Password page appears, as shown in Figure 4.

Figure 4 Dial-In WIzard Password Screen

4Enter a unique name and password to identify and verify this dial-in user when

dialing into this LAN Modem. This will match the username and password

conﬁgured on the client dial-in device.

5Click Next.

The Dial-in Wizard Service Provider selection screen opens.

6Choose the Service Provider which this dial-in user may access when dialing into

this LAN Modem. To disable remote service provider access for dial-in users,

choose None.

7Click Finish.

This completes the dial-in conﬁguration for single user. To continue setting up your

LAN Modem for dial-in access, go on to “Conﬁguring the Client Site”.

LAN Modem Site-to-Site Dial-In Wizard Instructions

1From the LAN Modem main conﬁguration page, click Dial-in.

2Click Dial-in Wizard.

3Select LAN Modem Site-to-Site and then click Next.

The password page appears.

4Enter a unique name and password to identify and verify this dial-in user when

dialing into this LAN Modem. This will match the username and password which

will be entered in the client LAN Modem’s service provider proﬁle.

Configuring the Client Site 9

5Click Next.

6Specify the site name you would like to designate for this dial-in user’s LAN

Modem, A, B or C. Note that this site name must be different from the site name

designated in this LAN Modem’s Dial-In Global Parameters, in order to distinguish

between the two networks. The site name speciﬁed here will match the site name

conﬁgured in the client LAN Modem’s Dial-in Global Parameters.

7Click Next.

The Dial-in Wizard Service Provider Screen opens.

8Choose the Service Provider which this dial-in user may access when dialing into

this LAN Modem. To disable remote service provider access for dial-in users,

choose None.

9Click Finish.

This completes the dial-in conﬁguration for LAN Modem Site-to-Site dial-in. Go on

to “Conﬁguring the Client Site”.

Advanced Dial-In Wizard Instructions

1From the LAN Modem main conﬁguration page, click Dial-in.

2Click Dial-in Wizard.

3Select Advanced and then click Next.

The Username and Password page appears.

4Enter a unique name and password to identify and verify this dial-in user when

dialing into this LAN Modem.

5Click Next.

The dial-in user parameters page appears. For conﬁguration instructions refer to

“Dial-in Users Parameters Screen” for more information.

Conﬁguring the Client

Site To conﬁgure a dial-in user proﬁle on the client site refer to the appropriate section:

■Conﬁguring the client site for a terminal adapter (ISDN Modem)

■Conﬁguring the client site for a LAN Modem

Conﬁguring the Client

Site for a Terminal

Adapter (ISDN

Modem)

If there is a terminal adapter at the client site (that is, an ISDN Modem), use the

appropriate software such as Dial-Up Networking for Windows to create a

connection to the LAN Modem. The basic steps for creating a Dial-Up Networking

connection are as follows.

■Create a Dial-Up Network entry

■Enter the telephone number of the server LAN Modem

■Enter the username and password

10 OFFICECONNECT ISDN LAN MODEM RELEASE NOTE V. 6.2.0 (ST) AND 5.3.0 (U)

Conﬁguring the Client

Site for a LAN Modem If a LAN Modem is the device at the client site, you must create a service provider

proﬁle on the client LAN Modem in order to dial into the remote LAN Modem. You

then use this service provider to place automatic or manual calls to the server LAN

Modem as needed.

When using a client LAN Modem to dial into another LAN Modem via the

Single-User scenario, you must manually change the IP address of the client LAN

Modem in order to distinguish between the two networks. Refer to “Changing the

IP address on the LAN Modem” for instructions.

Conﬁgure a Service

Provider for this Dial-In

Connection

Conﬁgure a service provider for this connection as follows.

Before You Begin

You will need the following information.

■Telephone number(s) of the server LAN Modem

■User ID and password of the Dial-in user

■IP address/subnet mask of the server LAN Modem

Additionally, to use the Callback feature, you will need the following information:

■Callback telephone number

■Callback username and password

Setting Up a Connection

to a Server LAN Modem To set up a connection on a client LAN Modem to dial into a server LAN Modem,

do the following.

1From the client LAN Modem’s main page, click the Service Providers icon.

The Service Provider Selection screen opens.

2Choose New (Private Network) from the drop-down menu and click Select.

The Private Network Parameters screen opens.

If you already have four Service Providers conﬁgured on your LAN Modem,

one must be deleted before a new Private Network can be created.

3In the Name ﬁeld, enter a name for this service provider, such as the location of

the server LAN Modem.

4In the Telephone Number 1 ﬁeld, enter the telephone number of the server LAN

Modem.

5In the Alternate Number ﬁeld, you can enter an alternate number to be dialed in

case the ﬁrst number is unavailable, or enter the second ISDN telephone number if

required for Multilink PPP. Select the appropriate option from the drop-down list

box and then enter the telephone number in the Number ﬁeld. Or, leave this ﬁeld

blank.

6Under Security, enter the User ID and Password for this Dial-in User to access the

server LAN Modem.

7Leave the DNS Addresses ﬁelds blank, as these values are assigned by the server

LAN Modem upon connection.

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