3Com 3C421600A Manuale di istruzioni

Part No. 1.024.2320 Rev BA

January, 2000

RELEASE NOTES

SUPERSTACK®II REMOTE ACCESS SYSTEM 1500

RELEASE 2.0

These Release Notes contain information that does not appear in the

SuperStack®II Remote Access System 1500 (RAS 1500), Release 2.0

documentation. It includes the following:

■New Features ........................................................................2

■Installation and Upgrade Information.....................................3

■Operational Information ........................................................3

Visit the RAS 1500 Web Site (http://www.3com.com/ras1500) for the

latest RAS 1500 product information, code, and documentation. On this

this site, you will also find a link to the 3Com Knowledgebase where you

will find useful product tips and information posted by other RAS 1500

users.

ISDN Assistance For assistance with ISDN services in the U.S., call the 3Com Access Plus

hot line, 1-800-343-3266.

When a similar service is available in Canada, information will be posted

on the 3Com Support Web Site (http://support.3com.com).

For assistance with ISDN services in Latin America, contact your local

phone company.

2RELEASE NOTES SUPERSTACK® II REMOTE ACCESS SYSTEM 1500 RELEASE 2.0

New Features The following are new features in this release:

Web Configuration

Interface

The Web Configuration Interface or Web Configurator is a browser-based

application for configuring features of your SuperStack®II Remote Access

System1500. This new tool provides a platform-independent solution to

set up your unit and only requires that you run a browser (such as,

Netscape Navigator or Microsoft Internet Explorer) that supports HTML

4.0, or higher, JavaScript, and style sheets on your PC or UNIX

workstation. Details for setting up basic features of your RAS 1500 are

described in the SuperStack®II Remote Access System 1500 Quick Setup

Guide that is packaged with your system. You can also find this guide by

clicking on “Documentation” on the Release 2.0 Resource CD.

Primary Rate Access

Unit (PAU)

The Primary Rate Access Unit (PAU) is an ISDN PRI T1 or E1 access unit

that connects to your Router Unit via a STACKNET™. Once the units are

connected to the base unit, the system serves as one network entity,

managed as one device, by a single network management application.

Dynamic Host

Configuration

Protocol (DHCP)

Dynamic Host Configuration Protocol (DHCP), acting as a server, proxy, or

relay is a new component for this release. The RAS 1500 can serve as the

central DHCP server for both LAN-based and remote users. In addition, it

can “proxy” or “relay” IP address requests to another central server. This

feature simplifies network administration and enhances the mobility of

both remote and local users. The three DHCP scenarios are described

below:

■Server - Acting as a DHCP server, the RAS 1500 receives and

processes requests for IP information from dial-in clients and provides

the IP information directly back to the client.

■Proxy - Acting as a DHCP proxy, the RAS 1500 initiates a DHCP

requests to a DHCP server on behalf of a DHCP dial-in client. The

DHCP server receives and processes the request and sends the IP

information back to the dial-in client via the RAS 1500.

■Relay - Acting as a DHCP relay, the RAS 1500 passes on a request for

IP information from LAN clients through a LAN-to-LAN connection to

a DHCP server.

PPP Over Serial WAN

Port

This release of the RAS 1500 supports a PPP connection over a leased line

on its serial port. A leased line is a dedicated line between two sites and is

a permanently installed rather than a dialed up connection. PPP over the

Installation and Upgrade Information 3

WAN port can connect to another RAS 1500 or any compatible device

that supports PPP. PPP over leased line offers the following benefits:

■Constant connection. Once the connection between the sites is

established, the link does not come down unless you issue a

command to do so.

■Simple configuration. To prepare a RAS 1500 for leased-line PPP

requires little configuration.

■Fast. The RAS 1500 supports speeds of 2.048 Mbps.

Installation and

Upgrade

Information

The following is installation and upgrade information in this release:

Primary Rate

Access Unit (PAU)

Firmware Upgrade

The Primary Rate Access Unit (PAU) is delivered with firmware

pre-installed. If you upgrade to future releases of the firmware, be aware

of the following information:

After issuing the download command for PAU firmware upgrade,

download pau_image pau_x.dmf from server <tftp server ip

address> command sdl_start, do not enter anything, even though the

RAS 1500 prompt is visible from the console. The PAU code is being

written to flash. Wait until the message, “PAU is Operational,” is

displayed. This takes approximately 15 minutes. When the PAU is

operational message is displayed, it is safe to issue commands from the

console.

Operational

Information

The following is operational information in this release:

Idle Timeout for

LAN-to-LAN

Configuration

The idle timeout default for LAN-to-LAN in the Web Configurator is 0 (or

no timeout).This default value cannot be changed in the Web

Configurator. If you want to change the idle timeout, and we recommend

you do, you must use the CLI. The command is as follows:

4RELEASE NOTES SUPERSTACK® II REMOTE ACCESS SYSTEM 1500 RELEASE 2.0

Set user <user name> Idle_timeout <idle timeout value>

IMPORTANT: Please be aware that if you do not change the idle timeout

default value, which is set at 0, on-demand configurations will not

timeout. This means that you could incur costly telco charges. Therefore,

we recommend that you change this default from the CLI.

NT NOS Application Before loading the RAS 1500 NT NOS Authentication application, be sure

to uninstall any previous versions of this or the AccessBuilder NOS

Authentication application that may have been used previously.

Use the following steps to install and configure NOS authentication

software on the Windows NT station:

1Insert the RAS 1500 Resource CD into the Windows NT station.

2Select Install Software from the Main Menu.

3Select NT NOS Security. The setup program will be executed.

4From the Windows NT desktop, click Start, then Programs, then RAS

1500 Security Client, then Enable Authentication.

5Follow the directions to enable the service on the NT platform. This

ensures the service starts each time the machine is rebooted.

6By default the NOS program is installed to authenticate users without

regard to time differences between the RAS 1500 and the NT system

running NT Security Client. If you do wish to use the NT Security Client to

check timestamps between the RAS 1500 and the NT system, change the

default time of 0 to 15 minutes.

7On the NT system, go to Start, Programs, RAS 1500 Security Client and

select Security Client Config. The encryption key is a password exchanged

between the NT system and the RAS 1500. 3Com recommends you do

not change this. If you do, you must change the secret password on the

RAS 1500 the Web Configurator or the CLI with the following command:

set authentication secondary_secret [password]

8By default, there is no timestamp checking (0). To check timestamps

between the RAS 1500 and the server, enter the allowable time

difference, for example, 15.

9It is very important to set the date, time, and time zone correctly on the

RAS 1500 when using the timestamp check feature of NT Security Client.

To do this, through the Web Configurator click Date & Time/Timezone

Operational Information 5

10 Under the selection pulldown menu, select Timezone and select your

time zone. Click Apply to enable these settings.

11 Click Daylight Savings Time, if applicable. Enter the appropriate time

information, if daylight-saving applies to your configuration. Click Apply

to enable those settings.

12 Click Date&Time/Timezone. Under the selection pulldown menu, select

Date&Time. Select the appropriate date and time information. Click

Apply to enable these settings.

The RAS 1500 does not support MS-CHAP authentication with Windows

NT NOS authentication.

Users must logon locally to allow the user to use Windows NT security

with the RAS 1500. For example, follow these steps:

1Log on to the NT Server as Administrator.

2Open the Administrative Tools Program Group.

3Double-click the User Manager for Domains Program Group icon. The

User Manager screen appears.

4Click the single or multiple users you want to assign remote-access rights.

5In the User Rights from Policies list, select “logon locally.”

6Click OK.

The table below shows NT event viewer messages that help when

troubleshooting the RAS 1500.

6RELEASE NOTES SUPERSTACK® II REMOTE ACCESS SYSTEM 1500 RELEASE 2.0

Table 1 Event Viewer Messages

Extra Blank Faceplate

Packed with the PAU

For this release of the software, an I/O card does not have to be present in

the Router Unit (however, if one is installed it must be installed in

rm0/slot:1). Although you do not have to install an I/O card in the Router

Unit, it is recommended that you cover the blank slot so that no slots are

left exposed. An extra face plate is provided when you purchase a PAU.

This face plate should be used to cover this empty slot in your Router

Unit. It can be easily attached to the unit by using the panel screws that

are provided.

PAU Delete Command Remove the STACKNET cable from the PAU before issuing a delete

command.

set imodem interface

command in the CLI

for the PAU

There is an undocumented set imodem interface command for saving

modem configurations on the PAU that is not displayed in the section

entitled, “Set Commands” in Chapter 4 of the SuperStack®II Remote

Access System 1500 System Reference Guide. Enter the following

command to save your PAU modem configuration:

set imodem interface <PAU interface name> at at&S

Restoring Router Unit

to Factory Defaults

When the Router Unit is restored to factory defaults, the IP address and

manage user(s) will be deleted. To begin using your RAS 1500, you must

reassign an IP address, either through the IP Wizard available from the 2.0

Resource CD if you are a PC user, or through the CLI Quick Setup if you

are a UNIX user. Refer to the SuperStack®II Remote Access System 1500

Quick Setup Guide for details on setting an IP address for your RAS 1500.

Message ID Message

1Security Service installed successfully

2Security Service disabled

3Security Service enabled successfully

with encryption key (key)

4Security Service stopped

5User successfully authenticated user

RAS 1500 IP Address

6User failed to authenticate user

RAS 1500 IP Address

Operational Information 7

Once you have reassigned an IP address for your RAS 1500, use the

default user name “Admin” and the default password “Password”

when you configure features through the Web Configurator. You are

prompted to enter this user name and password when you select the first

feature, from the menu of features, that you want to configure. Both the

default user name and password will be overwritten once you set your

own unique manager user name and password. The user name must be

between 1 and 32 alphanumeric, nonblank characters and is

case-sensitive. The password must be between 1 and 15 characters and is

not case-sensitive.

List Connections

Command in the CLI

Sometimes a list connections command from the CLI (Command Line

Interface) will scroll information. If this occurs, press <CTRL-C> to refresh

the screen.

Using Fractional PRI If you are using fractional PRI, obtain from your telco, information on the

PRI line and the channels that are associated with that line. Configure a

specific modem group to include only those PRI members. Do not use

modem group all.

Creating A Network

Service

Creating a network service automatically creates a modem group with

the same name as the network service. This could cause a problem if a

modem group already exists with the same name. The modem group will

be overwritten with new information.

Refreshing Web

Configuration

Interface Data

In order to ensure data between device and web browser is synchronized,

refresh the data in your web browser by clicking the reload or refresh

button. Do not leave the browser open on the desktop. When

configuration is complete exit out of the browser session.

Configuring Users To properly change a user’s configuration, follow these general steps:

1From the Web Configuration Interface, telnet to the CLI in the Router

Unit.

2Disable the user.

3Make the changes to the user’s configuration.

4Enable the user.

8RELEASE NOTES SUPERSTACK® II REMOTE ACCESS SYSTEM 1500 RELEASE 2.0

For example, to set an existing user, “john,” as a “network” type, enter

the following commands in the CLI:

1disable user john

A message appears.

2set user john type network

3enable user john

Installing 3CDaemon

and Adobe Acrobat

from the 2.0

Source CD

Before you install freeware applications, such as 3CDaemon and Adobe

Acrobat, from the 2.0 Resource CD, you must disable any antivirus

software that is running on your system (i.e., Norton Utilities). If you do

not, your system may fail and you may receive an operational failure

message, “ISSET_SE”. If after you disable antivirus software you still

receive an “ISSET_SE” after installing your freeware, go to the Microsoft

Support Web page and search on “ISSET_SE” for installation problems.

North American

Switch Types for

ISDN BRI calls

In rare situations, ISDN BRI calls using North American switch types, may

connect and then immediately disconnect. If this happens, while using

this release, issue the following commands for each of your BRI ISDN

interfaces on the Router Unit or Port Expansion Module (PEM):

set switched interface rm0/slot:1/mod:1 at at*B3=0

set switched interface rm0/slot:1/mod:2 at at*B3=0

set switched interface rm0/slot:1/mod:3 at at*B3=0

set switched interface rm0/slot:1/mod:4 at at*B3=0

set switched interface rm0/slot:2/mod:1 at at*B3=0

set switched interface rm0/slot:2/mod:2 at at*B3=0

set switched interface rm0/slot:2/mod:3 at at*B3=0

set switched interface rm0/slot:2/mod:4 at at*B3=0

3Com, the 3Com logo, and SuperStack are registered trademarks of 3Com Corporation.

Other brand and product names may be registered trademarks or trademarks of their respective holders.

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