Visitor and Community Network Access Concentrator
Release
 3Com Corporation 5400 Bayfront Plaza Santa Clara, California
 Contents
 127
Troubleshooting
130 Inability to Connect Broken Session 131
 3Com FTP Site 142
Online Technical Services 141 World Wide Web Site
143
Page
 List conventions that are used throughout this guide
Conventions
Icon Description
 Year
Related
Documentation
Compliance
 Visitor
Major Features Benefits
Features
Community
 Overview
 Applications
 MTU/MDU Application
 VCN AC Features
 VCN AP
 VCN AC Front Panel
 VCN AC Front Panel LEDs
Features Real Time LED Indications
Local Management
State Used to
 Central Management
Remote Management
 Overview
 Installing the VCN Access Concentrator
Safety Precautions
 Sécurité
Précautions de
Sicherheitsvorkeh- rungen
 Preparing the Site
For the VCN Access
Visitor and Community Network system is installed
Concentrator
 Installing the VCN Access Concentrator
 Punch-down Block with a Patch Panel
 Installing the VCN Access Concentrator
 Punch-Down Block Without a Patch Panel
 VCN Access Point Rear Panel
 Installing the VCN Access Concentrator
Repeat through for up to 24 telephone lines
 Cable Kit
Access Concentrator 19-inch rack. in the 19-inch Rack
VCN Access Concentrator Accessory Set
Part Quantity
 Fitting a Bracket for Rack Mounting
 Back Panel Connections
 Displays the rack after it has been wire connected
Front Panel Connections
 Is P
 Pin Assignment for the RJ-21 Connector
Line Cards in the VCN Access Concentrator
Patch Panel blocks at the back with RJ-21 connectors
VCN AC Port No First Pin Second Pin
 Female RJ-21 Connector
 VCN Access Concentrator Unit Installed Without a Patch Panel
 Inserting MAC Addresses for VCN Access Concentrator Ports
Sequence of Configuration
General guidance is provided for non-SuperStack switches
 Installing the VCN Access Concentrator
 VCN AC Port and VCN AP MAC Addresses
Port No. MAC Address
 Installing the VCN Access Concentrator
 Automated Procedures for SuperStack II 1100/3300
 ConfApp screen appears Figure
ConfApp Screen
 Entering the Switch Address
 Community Parameter
 Removing Wrong Address
 Ethernet Switch
Powering Up
VCN Access
 SPE-3, SPT-3, G, W
 Troubleshooting
 Installing the VCN Access Concentrator
 This chapter describes the following
Real Time LED
Indications
Status of each line in the VCN AC
 Management
Using
Terminal for Local Central Management
 Connecting the PC To connect the PC to the LMA port
Terminal Emulator
 Type your password and press Enter
Login
Type your Login ID and press Enter
Line CardThis section describes local management
 Line Card Main Menu
Line Card Menu Hierarchy and Summary
 Line Card Menu Structure
 Line Card Main Menu of Port
Number Sequence Corresponding to Submenus
 LC Version
Press Enter to return to the Line Card Main Menu
 Management Menu
Ethernet Menu
 Ethernet Traffic Counters
Ethernet Menu Options Feature How to use
Ethernet Menu options are described in Table
Ethernet Menu Options
 Ethernet Status
Typical Ethernet Traffic Counters Screen
 Reset Ethernet Counters
Change Ethernet Work Mode Menu
 Setting Internal Loopback Mode
When you discard the operation, the message appears
 Setting Normal Mode
 Hdlc Menu options are described in Table
Hdlc Menu Options Feature How to use
Hdlc Menu
Hdlc Traffic counters
 Hdlc Status
 Reset Hdlc Counters
Change Hdlc Work Mode
 Normal mode is lack of loopbacks
 Vdsl Control Menu
To check the Vdsl parameters
 SNR, signal to noise ratio
Reset All Counters
 Reset the Line Card
Login message appears
 LC Configuration Menu
Set Vlan ID for Management
 Respond by entering your new password. The message appears
Set Ethernet Half/Full Duplex Mode
Change Password
After any number the user enters, the message appears
 Through the LMA
Set to Factory Defaults
To download new software perform the following steps
 Type S the downloading message in appears
Procomm Plus window shown in , select Data Send File Figure
 Procomm Plus Terminal Screen
 Sending File Using Ascii Screen
Procom Plus Data Send File Menu
 Status Screen
 File Downloaded Messages
 Software Execution Messages
 Line Card Management
 This section describes central management
 LMA Access for Central Management
 Login Process
Central Management Menus in the LMA Interface
 Login Process
Central Management Menu Hierarchy and Summary
 Central Management Menu Structure
 VCN Access Concentrator Menu
Central Management Menus and Corresponding Number Sequence
 Management Agent Menu
To access central management
Line Card Main Menu for Line Card
 Version Information
Slot 1 Line Card Main Menu
 Monitoring Menu
Hardware and Software Version
 Brief Status of All Ports
Monitoring Menu
 Detailed Port Status
Refresh Brief Status or View Port Statistical Detail
 Traffic Counters for Selected Port
Select Traffic Counters and Port
 Dialog in appears
Vdsl Information for Selected Port
 Vdsl Information for Selected Port
 Control Menu
Reset Port
Change Port Selection in Control Menu
 If you type N, the message appears
If you type y, the following message appears
 Vdsl Restart
This is followed by the messages in and , Login prompt
Messages in appear
To abort type n and press Enter
 Concentrator Configuration Menu
Type n and press Enter to abort
 Change Vlan ID for Management
 Change Ethernet Half or Full Duplex Mode
Type 2 and press Enter the following dialog appears
 Type your new password and press Enter. The message appears
Change the Concentrator Password
Agent Configuration Menu
 IP Menu
IP Menu
 Close Telnet Session
Save changes, type y and press Enter Messages appear
Discard changes, type n and press Enter n
If a Telnet session exists, the message appears
 Default is n
Set Factory Defaults
 To proceed, type y and press Enter the message appears
Reset Agent
To reject, type n and press Enter the message appears
Overview
 Telnet Connection
Structure of Remote Menus
 Telnet Menu Structure
 Central Management Menus and Corresponding Number Sequence
 Telnet Login
VCN Access Concentrator
 Hardware and Software Version
 To configure VCN AC management, type 5 in the VCN Access
Menu appears
 To terminate, type y and press Enter the message appears
Exiting the Telnet Management Session
Telnet session is closed
 Download
 Procedure
Downloading Software to the LCs in the VCN AC
 VCN Service Switch 10 Front Pane
 VCN AP Main Menu
 VCN AP Software Download Menu
Enter the AC Vlan ID and press Enter. The message appears
 LC Downloading State Table
 LC Downloading Results
 Downloading Software to VCN APs
Enter the AP Vlan ID and press Enter. The message appears
 AP Downloading State Table
 Check Software Download for the LC Cards
 Check the following Software version of the failed LCs
Download Failed for all LCs and all VCN APs
Download Failed for One or More Line Cards but not All
Check the physical path between the downloading VCN AP
 Download Failed for One or More VCN APs but not All
 Managing the VCN Access Concentrator
 Line Power
State
 Indicator LEDs
Using Front Panel
Problems
LEDs to Solve
 Ethernet Traffic Counters
 Hdlc Traffic Count Indicators
 From Traffic Counts Frame counts
Error message Significance User Action
Fatal
 Telnet Connection Problems
 Telnet Connection Problems
 Troubleshooting
 Product Specification
 Product Specification
 Terminal Emulation Settings
Procomm Plus Terminal screen in appears
 Procomm Plus Settings
Number From Left Function Settings
 Setup window opens
137
 Select System Tab
 Flow control
Parity None
139
 Terminal Emulation Settings
 Services
Online Technical
 Hours a day, 7 days a week
Access by Analog Modem
Username anonymous
Country Data Rate Telephone Number
 847 262
Access by Digital Modem
408 727
 Europe, South Africa, and Middle East
Country Telephone Number Asia, Pacific Rim
 Country Telephone Number Fax Number
Page
 Glossary
 Mbps
Mbaud
MiniDIN
 Glossary
 Glossary
 Index
Numbers
 Remote software download Requirements
 Vlan ID
 Index
 3Com Corporation Limited Warranty
 Governing LAW
 EMC Statements