Enterasys Networks VH-8G User Manual
VERTICAL HORIZON
VH-8G
GIGABIT ETHERNET SWITCH
MANAGEMENT GUIDE
9033640
Notice
Only qualified personnel should perform installation
procedures.
NOTICE
Enterasys Networks reserves the right to make changes in specifications and other information
contained in this document without prior notice. The reader should in all cases consult Enterasys
Networks to determine whether any such changes have been made.
The hardware, firmware, or software described in this manual is subject to change without notice.
IN NO EVENT SHALL ENTERASYS NETWORKS BE LIABLE FOR ANY INCIDENTAL,
INDIRECT, SPECIAL, OR CONSEQUENTIAL DAMAGES WHATSOEVER (INCLUDING BUT
NOT LIMITED TO LOST PROFITS) ARISING OUT OF OR RELATED TO THIS MANUAL OR
THE INFORMATION CONTAINED IN IT, EVEN IF ENTERASYS NETWORKS HAS BEEN
ADVISED OF, KNOWN, OR SHOULD HAVE KNOWN, THE POSSIBILITY OF SUCH
DAMAGES.
2000 by Enterasys Networks, P.O. Box 5005, Rochester, NH 03866-5005
All Rights Reserved
Printed in Taiwan, R.O.C.
Order Number: 9033640 November 2000
Enterasys, Enterasys Networks, and Vertical Horizon are trademarks or registered trademarks of
Enterasys Networks, Inc.
Microsoft, Windows, Windows 95, Windows 98, and Windows NT are either trademarks or registered
trademarks of Microsoft Corporation.
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All other product names mentioned in this manual may be trademarks or registered trademarks of
their respective companies.
9033640 i
Notice
ii 9033640
TABLE OF CONTENTS
1. MANAGEMENT OVERVIEW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Configuration Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Required Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Console Port (Out-of-Band) Connections . . . . . . . . . . . . . . . . . . . . 1
In-Band Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2. VH-8G USER INTERFACE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
User Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Factory Defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Main Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
System Information Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Displaying System Information . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Displaying Switch Version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Management Setup Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Changing the Network Configuration . . . . . . . . . . . . . . . . . . . . . . . 13
IP Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
IP Connectivity Test (Ping) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
HTTP Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Configuring the Serial Port. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Assigning SNMP Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Console Login Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Downloading System Software . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Saving the System Configuration . . . . . . . . . . . . . . . . . . . . . . . . . 23
Configuring Management Access . . . . . . . . . . . . . . . . . . . . . . . . . 24
Configuring the Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Configuring Port Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Viewing the Current Port Configuration . . . . . . . . . . . . . . . . . . . . . 28
Using the Spanning Tree Algorithm . . . . . . . . . . . . . . . . . . . . . . . . 29
Viewing the Current Spanning Tree Configuration . . . . . . . . . . . . 32
Using a Mirror Port for Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Configuring Port Trunks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
IGMP Multicast Filtering. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Configuring Broadcast Storm Control . . . . . . . . . . . . . . . . . . . . . . 41
Configuring Bridge MIB Extensions . . . . . . . . . . . . . . . . . . . . . . . . 42
Configuring Traffic Classes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Configuring Virtual LANs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Multicast Router Port Information . . . . . . . . . . . . . . . . . . . . . . . . . 52
Static Multicast Router Port Configuration. . . . . . . . . . . . . . . . . . . 53
IGMP Member Port Configuration . . . . . . . . . . . . . . . . . . . . . . . . . 54
Port Security Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Monitoring the Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Displaying Port Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Displaying RMON Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Displaying the Unicast Address Table . . . . . . . . . . . . . . . . . . . . . . 60
9033640 Table of Contents iii
Displaying the IP Multicast Registration Table . . . . . . . . . . . . . . . 61
Configuring Static Unicast Addresses. . . . . . . . . . . . . . . . . . . . . . 62
Resetting the System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Logging Off the System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
3. CONFIGURING & MONITORING THE SWITCH . . . . . . . . . . . . . . . . . . . . . 65
Common Tasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Setting Password Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Assigning an IP Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Checking Network Configuration Status. . . . . . . . . . . . . . . . . . . . . . . . 67
Connecting via Telnet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Setting SNMP Management Access . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Viewing Switch Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Configuring Port Mirroring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Downloading a Software Upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Downloading Via the Serial Port . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Downloading Via TFTP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Configuring Spanning Tree Parameters. . . . . . . . . . . . . . . . . . . . . . . . 72
Configuring VLANs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Configuring Class of Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Configuring Port Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Configuring the Unicast Address Table . . . . . . . . . . . . . . . . . . . . . . . . 75
Setting a Default Gateway . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Configuring BootP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Configuring Port Trunks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
4. SNMP MANAGEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
The SNMP Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
MIB Objects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
RFC 1213 (MIB-II). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
RFC 1573 (Interfaces Evolution MIB) . . . . . . . . . . . . . . . . . . . . . . 81
RFC 1643 (Ethernet-Like MIB) . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
RFC 1493 (Bridge MIB). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
RFC 1757 (RMON MIB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
IEEE 802.1Q (Q-MIB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Enterasys Proprietary MIB Extensions . . . . . . . . . . . . . . . . . . . . . 82
Compiling MIB Extensions: Enterasys Website . . . . . . . . . . . . . . . . . . 82
APPENDIX A. SPANNING TREE CONCEPTS . . . . . . . . . . . . . . . . . . . . . . . . 83
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Spanning Tree Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Spanning Tree Protocol in a Network. . . . . . . . . . . . . . . . . . . . . . . . . . 84
Spanning Tree Protocol Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Spanning Tree Protocol Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Communicating Between Bridges . . . . . . . . . . . . . . . . . . . . . . . . . 86
Selecting a Root Bridge and Designated Bridges. . . . . . . . . . . . . 86
Selecting Designated Ports. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Handling Duplicate Paths . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Remapping Network Topology . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
iv Table of Contents VH-8G
APPENDIX B. VIRTUAL LANS (VLANS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
VLANs and Frame Tagging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
VH-8G VLAN Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Assigning Ports to VLANs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Forwarding Tagged/Untagged Frames . . . . . . . . . . . . . . . . . . . . . . . . . 91
Automatic VLAN Registration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Forwarding Traffic with Unknown VLAN Tags . . . . . . . . . . . . . . . . 92
APPENDIX C. CLASS OF SERVICE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
APPENDIX D. IP MULTICAST FILTERING . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
IGMP Snooping and IP Multicast Filtering . . . . . . . . . . . . . . . . . . . . . . 95
INDEX
9033640 Table of Contents v
vi Table of Contents VH-8G
1. MANAGEMENT OVERVIEW
Configuration Options
For advanced management capability, the Enterasys Networks’ Vertical
Horizon VH-8G provides a menu-driven system configuration program.
This program can be accessed by a direct connection to the serial port on
the switch’s rear panel (out-of-band), or by a Telnet connection over the
network (in-band).
The switch’s management is based on SNMP (Simple Network
Management Protocol). SNMP permits a switch to be managed from any
PC in the network using in-band management software.
The switch’s internal management also includes an embedded HTTP
Web server. This Web server can be accessed using a standard Web
browser from any computer attached to the network. Refer to the VH-8G
Web Management Guide for more information.
The system configuration program and SNMP support management
functions such as:
• Enable/disable any port
• Set the communication mode for any port
• Configure SNMP parameters
• Select RMON options
• Display system information or statistics
• Configure the switch to join a Spanning Tree
• Download system firmware
• Restart the system
Required Connections
Console Port (Out-of-Band) Connections
Attach a VT100 compatible terminal or a PC running a terminal emulation
program to the serial port on the switch’s rear panel. Use the null-modem
cable provided with this package, or use a null-modem connection that is
compatible with the console port pin assignments shown in Appendix A of
the VH-8G User Guide.
When attaching to a PC, set terminal emulation type to VT100, specify the
port used by your PC (i.e., COM 1~4), and then set communications to 8
data bits, 1 stop bit, no parity, and 19200 bps (for initial configuration).
Also be sure to set flow control to “none.” (Refer to “Configuring the Serial
Port” on page 17 for a complete description of configuration options.)
9033640 Management Overview 1
In-Band Connections
Prior to accessing the switch via a network connection, you must first
configure it with a valid IP address, subnet mask, and default gateway
using an out-of-band connection or the BootP protocol.
Telnet Connection
Prior to accessing the switch via an in-band Telnet connection, you must
first configure it with a valid IP address, subnet mask, and default gateway
using an out-of-band connection or BootP protocol. After configuring the
switch’s IP parameters, you can access the on-board configuration
program from anywhere within the attached network.
Use the Network Configuration menu to specify the
maximum number of simultaneous Telnet sessions that
are supported by the system.
In-Band Network Connection
The on-board configuration program can be accessed using Telnet from
any computer attached to the network. The switch can also be managed
by any computer using a Web browser (Internet Explorer 4.0 or above, or
Netscape Navigator 4.0 or above), or from a network computer using
network management software.
2 Management Overview VH-8G
2. VH-8G USER INTERFACE
Overview
Access is gained to the console menus by directly connecting a terminal
to the console port with a null-modem cable connection, or using Telnet
to access the switch over the network. These menus allow you to
reconfigure the switch, as well as to monitor the status and performance
of the switch. The menus have a layout similar to the sample Main Menu
shown in Figure 2-1. The information is divided into the following parts:
• Menu Name (includes access privileges)
• Selectable Items
• Screen Prompt for menu selections and entry of field parameters,
and Message Area for display of parameters or error messages.
Vertical Horizon Local Management -- VH-8G
Menu name
Selectable
Items
Screen prompt
and message
area
Main Menu
System Information Menu...
Management Setup Menu...
Device Control Menu...
Network Monitor Menu...
System Restart Menu...
Exit
Use <TAB> or arrow keys to move. <Enter> to select.
Figure 2-1. Sample Main Menu
9033640 VH-8G User Interface 3
User Access
Once a direct connection to the console port or a Telnet connection is
established, the login screen for the on-board configuration program
appears. You may need to press Enter a few times to display the screen.
The default user names are “admin” and “guest,” with no passwords. The
administrator has Read/Write access, which allows you to read and
modify switch information. The guest has Read Only access to the
management program, which allows you to view switch information, but
not modify any operating parameters.
You should define a new administrator password, record it and put it in a
safe place. From the Main Menu, select Management Setup Menu /
Console Login Configuration, and enter a new password for the
administrator. Passwords can consist of up to 11 alphanumeric
characters and are not case sensitive.
To use the console menus, do the following:
1. Use the cursor keys to highlight the desired option.
If the selected item is a submenu title, the submenu is displayed
when you press the Enter key.
2. Follow the screen prompts to specify the parameter requested.
If the selected item is a parameter, the system displays a prompt for
you to enter a new value. If the value entered is invalid, a message
displays, requesting you to enter a valid value.
A user is allowed three attempts to enter the correct
password; on the third failed attempt the current
connection is terminated.
4 VH-8G User Interface VH-8G
Factory Defaults
Table 2-1 lists the default settings for switch configuration parameters.
Each parameter can be changed via the console menus or Telnet.
Parameter Default Value
Multicast Filtering
GMRP Disabled
IGMP Multicast Filtering Disabled
Port Configuration
Flow Control Disabled
Speed and Duplex Auto
Admin Enabled
Broadcast Storm Control Enabled - 500 pps
Port Priority
Default Ingress User Priority 0
Spanning Tree Algorithm
Active Aging Time 300
Bridge Priority 32768
Forward Delay 15
Hello Time 2
Max Age 20
Path Cost 4 - 1000Mbps ports
Port Priority 128
Spanning Tree Protocol Enabled
System Configuration
Management VLAN All
BootP Enable Disabled
Password <none>
Screen Timeout 10 min
Send Authentication Fail Traps Enabled
SNMP Community Name public, private
Terminal Baud Rate Auto
User Names admin, guest
Table 2-1. Factory Default Settings
9033640 VH-8G User Interface 5
Parameter Default Value
Virtual LANs
Acceptable VLAN Frame Type All
Configurable PVID Tagging Yes
GVRP Disabled
Untagged VLAN Group Assignment 1
VLAN Ingress Filtering False
VLAN Learning SVL
6 VH-8G User Interface VH-8G
Main Menu
The Main Menu is the first screen seen after successfully logging into the
system. Figure 2-2 shows the Main Menu and the accompanying table
describes the Main Menu.
Vertical Horizon Local Management -- VH-8G
Main Menu
System Information Menu...
Management Setup Menu...
Device Control Menu...
Network Monitor Menu...
System Restart Menu...
Exit
Use <TAB> or arrow keys to move. <Enter> to select.
Figure 2-2. Main Menu
Selection Description
System Information Menu
System Information Provides basic system description, including contact
Switch Information Shows hardware/firmware version numbers and power
Management Setup Menu
Network Configuration Includes IP setup, Ping facility, HTTP (Web server) setup,
Serial Port
Configuration
SNMP Configuration Activates traps; and configures communities and trap
Console Login
Configuration
TFTP Download Downloads new version of firmware to update your system
Configuration Save &
Restore
Management
Configuration
information.
status of the switch.
Telnet configuration, and MAC address.
Sets communication parameters for the serial port, including
management mode, baud rate, console time-out, and screen
data refresh interval.
managers.
Sets user names and passwords for system access, as well
as the invalid password threshold and lockout time.
(in-band).
Saves the switch configuration to a file on a TFTP server.
This file can be later downloaded to restore the configuration.
Specifies if management access to the switch is available
from all VLANs or restricted to one VLAN.
9033640 VH-8G User Interface 7
Selection Description
Device Control Menu
Port Configuration Enables any port, enables/disables flow control, and sets
communication mode to auto-negotiation, full duplex or half
duplex.
Port Information Displays operational status, including link state, flow control
method, and duplex mode.
Spanning Tree
Configuration
Enables Spanning Tree Algorithm; also sets parameters for
hello time, maximum message age, switch priority, and
forward delay; as well as port priority and path cost.
Spanning Tree
Information
Mirror Port
Displays full listing of parameters for the Spanning Tree
Algorithm.
Sets the source and target ports for mirroring.
Configuration
Port Trunking
Specifies ports to group into aggregate trunks.
Configuration
BStorm Control
Configuration
Allows you to enable broadcast storm control and set the
packet-per-second threshold.
IGMP Configuration Configures IGMP multicast filtering.
Extented Bridge
Configuration
Displays/configures extended bridge capabilities provided by
this switch, including support for traffic classes, GMRP
multicast filtering, and VLAN extensions.
802.1P Configuration Configures default port priorities and queue assignments.
802.1Q VLAN
Base Information
802.1Q VLAN Current
Displays basic VLAN information, such as VLAN version
number and maximum VLANs supported.
Displays VLAN groups and port members.
Table Information
802.1Q VLAN Static
Table Configuration
Configures VLAN groups via static assignments, including
setting port members, or restricting ports from being
dynamically added to a port by the GVRP protocol.
Port Assignment
VLAN Configuration
Multicast Router Port
Information
Static Multicast Router
Port Cfg
IGMP Member Port
Configuration
Port Security
Configuration
Displays/configures port-specific VLAN settings, including
PVID, ingress filtering, and 802.1Q trunks.
Displays the ports on the switch attached to a neighboring
multicast router/switch for each VLAN ID.
Assigns ports that are attached to a neighboring multicast
router/switch.
Assigns ports that are attached to hosts who want to receive
a specific multicast service.
Allows you to enable and configure port security for the
switch.
Network Monitor Menu
Port Statistics Displays statistics on network traffic passing through the
selected port.
RMON Statistics Displays detailed statistical information for the selected port
such as packet type and frame size counters.
Unicast Address Table Provides full address listing, as well as search and clear
functions.
8 VH-8G User Interface VH-8G
Selection Description
IP Multicast
Registration Table
Static Unicast Address
Table Configuration
System Restart Restarts system with options to use POST, or to retain
Exit Exits the configuration program.
Displays all the multicast groups active on this switch,
including multicast IP addresses and corresponding VLAN
IDs.
Used to manually configure host MAC addresses in the
unicast table.
factory defaults, IP settings, or user authentication settings.
System Information Menu
Use the System Information Menu to display a basic description of the
switch, including contact information, and hardware/firmware versions.
Vertical Horizon Local Management -- VH-8G
System Information Menu
System Information ...
Switch Information ...
Use <TAB> or arrow keys to move. <Enter> to select.
<OK>
Figure 2-3. System Information Menu
Selection Description
System Information Provides basic system description, including contact
Switch Information Shows hardware/firmware version numbers and power status
9033640 VH-8G User Interface 9
information.
of the switch.
Displaying System Information
Use the System Information screen to display descriptive information
about the switch, or for quick system identification as shown in the
following figure and table.
Vertical Horizon Local Management -- VH-8G
System Information
System Description : Vertical Horizon VH-8G
System Object ID : 1.3.6.1.4.1.5624.2.1.9
System Up Time : 48067 (0 day, 1 hr, 2min, 34 sec)
System Name : DEFAULT SYSTEM NAME
System Contact : DEFAULT SYSTEM CONTACT
System Location : DEFAULT SYSTEM LOCATION
<APPLY> <OK> <CANCEL>
Use <TAB> or arrow keys to move, other keys to make changes.
Figure 2-4. System Information
Parameter Description
System Description System hardware description.
System Object ID MIB II object identifier for switch’s network management
System Up Time Length of time the current management agent has been
System Name
*
System Contact
System Location
*
Maximum string length is 255, but the screen only displays 45 characters. You
can use the arrow keys to browse the whole string.
subsystem.
running. (Note that the first value is 1/100 seconds.)
Name assigned to the switch system.
*
Contact person for the system.
*
Specifies the area or location where the system resides.
10 VH-8G User Interface VH-8G
Displaying Switch Version
Use the Switch Information screen to display hardware/firmware version
numbers for the switch, as well as the power status of the system.
Vertical Horizon Local Management -- VH-8G
Switch Information
Main Board
Hardware Version : V0.0 (860 CPU)
Firmware Version : 02.04.00.00
POST ROM Version : V1.02
Serial Number : 00-E0-63-76-F3-00
Port Number : 8
Internal Power Status : Active
Redundant Power Status : Inactive
Use <TAB> or arrow keys to move. <Enter> to select
<OK>
Figure 2-5. Switch Information
Parameter Description
Main Board
Hardware Version Hardware version of the main board.
Firmware Version System firmware version in ROM.
POST ROM Version Power-On Self-Test version number.
Serial Number MAC address associated with the main board.
Port Number Number of ports on the switch.
Internal Power Status Power status for the switch.
Redundant Power
Status
Redundant power status for the switch.
9033640 VH-8G User Interface 11
Management Setup Menu
After initially logging onto the system, adjust the communication
parameters for your console to ensure a reliable connection (Serial Port
Configuration). Specify the IP addresses for the switch (Network
Configuration / IP Configuration), and then set the Administrator and User
passwords (Console Login Configuration). Remember to record them in a
safe place. Also set the community string which controls SNMP access to
the switch via in-band management software (SNMP Configuration). The
items provided by the Management Setup Menu are described in the
following sections.
Vertical Horizon Local Management -- VH-8G
Management Setup Menu
Network Configuration ...
Serial Port Configuration ...
SNMP Configuration ...
Console Login Configuration ...
TFTP Download ...
Configuration Save & Restore ...
Management Configuration ...
Use <TAB> or arrow keys to move. <Enter> to select.
<OK>
Figure 2-6. Management Setup Menu
Selection Description
Network
Configuration
Serial Port
Configuration
SNMP Configuration Activates traps; and configures communities and trap managers.
Console Login
Configuration
TFTP Download Downloads new version of firmware to update your system (in-
Configuration Save &
Restore
Management
Configuration
Includes IP setup, Ping facility, HTTP (Web server) setup, Telnet
configuration, and MAC address.
Sets communication parameters for the serial port, including
management mode, baud rate, console time-out, and screen
data refresh interval.
Sets user names and passwords for system access, as well as
the invalid password threshold and lockout time.
band).
Saves the switch configuration to a file on a TFTP server. This file
can be later downloaded to restore the configuration.
Specifies if management access to the switch is available from all
VLANs or restricted to one VLAN.
12 VH-8G User Interface VH-8G
Changing the Network Configuration
Use the Network Configuration menu to set the bootup option, configure
the switch’s Internet Protocol (IP) parameters, enable the on-board Web
server, or to set the number of concurrent Telnet sessions allowed. The
screen shown below is described in the following table.
Vertical Horizon Local Management -- VH-8G
Network Configuration
IP Configuration ...
IP Connectivity Test (Ping) ...
HTTP Configuration ...
MAX Number of allowed Telnet sessions (1 -4) : 4
Physical Address : 00-E0-29-52-28-00
<APPLY> <OK> <CANCEL>
Use <TAB> or arrow keys to move. <Enter> to select.
Figure 2-7. Network Configuration
Parameter Description
IP Configuration Screen used to set the bootup option, or configure the switch’s IP
IP Connectivity Test Screen used to test IP connectivity to a (Ping) specified device.
HTTP Configuration Screen used to enable the Web server.
MAX Number of
Allowed Telnet
Sessions
Physical Address MAC address of the switch.
parameters.
The maximum number of Telnet sessions allowed to
simultaneously access the switch.
9033640 VH-8G User Interface 13
IP Configuration
Use the IP Configuration screen to set the bootup option, or configure the
switch’s IP parameters. The screen shown below is described in the
following table.
Vertical Horizon Local Management -- VH-8G
Use <TAB> or arrow keys to move, other keys to make changes.
Network Configuration: IP Configuration
Interface Type : Ethernet
IP Address : 10.1.0.1
Subnet Mask : 255.255.0.0
Gateway IP : 10.1.0.254
IP State : USER-CONFIG
Figure 2-8. IP Configuration
Parameter Default Description
Interface Type Ethernet Indicates IP over Ethernet.
IP Address 10.1.0.1 IP address of the switch you are managing when
Subnet Mask 255.255.0.0 Subnet mask of the switch. This mask identifies the host
Default
0.0.0.0 Gateway used to pass trap messages from the switch’s
Gateway
IP State USER-
CONFIG
accessing it over the network. The switch supports SNMP
over UDP/IP transport protocol. In this environment, all
systems on the Internet, such as network interconnection
devices and any PC accessing the switch (or running
management software) must have an IP address.
Valid IP addresses consist of four numbers, of 0 to 255,
and separated by periods. Anything outside of this format
will not be accepted by the configuration program.
address bits used for routing to specific subnets.
agent to the management station. Note that the gateway
must be defined if the management station is located in a
different IP segment.
Specifies whether IP functionality is enabled via manual
configuration, or set by Boot Protocol (BootP). Options
include:
USER-CONFIG - IP functionality is enabled based on the
default or user specified IP
configuration.
BOOTP Get IP - IP is enabled but will not function until a
BootP reply has been received. BootP
requests will be periodically broadcast
by the switch in an effort to learn its IP
address. (BootP values can include the
IP address, default gateway, and
subnet mask.)
14 VH-8G User Interface VH-8G
IP Connectivity Test (Ping)
Use the IP Connectivity Test to see if another site on the Internet can be
reached. The screen shown below is described in the following table.
Vertical Horizon Local Management -- VH-8G
Network Configuration: IP Connectivity Test (Ping)
IP Address : 200.123.211.109
Test Times : 1 Interval : 3
Success : 0 Failure : 0
[Start]
Use <TAB> or arrow keys to move, other keys to make changes.
<OK>
Figure 2-9. IP Connectivity Test
Parameter Description
IP Address IP address of the site you want to ping.
Test Times The number of ICMP echo requests to send to the specified site.
Range: 1~1000
Interval The interval (in seconds) between pinging the specified site.
Range: 1~10 seconds
Success/Failure The number of times the specified site has responded or not to
pinging.
9033640 VH-8G User Interface 15
HTTP Configuration
Use the HTTP Configuration screen to enable/disable the on-board Web
server, and to specify the TCP port that will provide HTTP service. The
screen shown below is described in the following table.
Vertical Horizon Local Management -- VH-8G
Network Configuration : HTTP Configuration
HTTP Server : ENABLED
HTTP Port Number : 80
<APPLY> <OK> <CANCEL>
Use <TAB> or arrow keys to move, <Space> to scroll options.
Figure 2-10. HTTP Configuration
Parameter Description
HTTP Server Enables/disables access to the on-board Web server.
HTTP Port Number Specifies the TCP port that will provide HTTP service.
Range : 0~65535
Default : Port 80
(Telnet Port 23 is prohibited.)
16 VH-8G User Interface VH-8G
Configuring the Serial Port
You can access the on-board configuration program by attaching a VT100
compatible device to the switch’s serial port. (For more information on
connecting to this port, see “Required Connections” on page 1.) The
communication parameters for this port can be accessed from the Serial
Port Configuration screen shown below and described in the following
table.
Vertical Horizon Local Management -- VH-8G
Serial Port Configuration
Management Mode : CONSOLE MODE
Databits : 8
Parity : NONE
Time-Out (in minutes) : 10
Auto Refresh (in seconds) : 5
<APPLY> <OK> <CANCEL>
Use <TAB> or arrow keys to move, <Space> to scroll options.
Baudrate : 19200
Stopbits : 1
Figure 2-11. Serial Port Configuration
Parameter Default Description
Management Mode Console Mode Indicates that the console port settings are for
Baud Rate Auto The rate at which data is sent between devices.
Databits 8 bits Sets the data bits of the RS-232 port.
Stopbits 1 bit Sets the stop bits of the RS-232 port.
Parity none Sets the parity of the RS-232 port.
Time-Out 10 minutes If no input is received from the attached device
Auto Refresh 5 seconds Sets the interval before a console session will
direct console connection.
Options : 2400, 4800, 9600, 19200 bps, and Auto
detection
Options : 7, 8
Options : 1, 2
Options : none/odd/even
after this interval, the current session is
automatically closed.
Range : 0 - 100 minutes; 0: disabled
auto refresh the console information, such as
Spanning Tree Information, Port Configuration,
Port Statistics, and RMON Statistics.
Range : 5-255 seconds; 0: disabled
9033640 VH-8G User Interface 17
Assigning SNMP Parameters
Use the SNMP Configuration screen to display and modify parameters for
the Simple Network Management Protocol (SNMP). The switch includes
an SNMP agent which monitors the status of its hardware, as well as the
traffic passing through its ports. A computer attached to the network,
called a Network Management Station (NMS), can be used to access this
information. Access rights to the switch are controlled by community
strings. To communicate with the switch, the NMS must first submit a valid
community string for authentication. The options for configuring
community strings and related trap functions are described in the
following sections.
Vertical Horizon Local Management -- VH-8G
SNMP Configuration
Send Authentication Fail Traps : ENABLED
SNMP Communities ...
IP Trap Managers ...
<APPLY> <OK> <CANCEL>
Use <TAB> or arrow keys to move, <Space> to scroll options.
Figure 2-12. SNMP Configuration
Parameter Description
Send Authentication
Fail Traps
SNMP Communities Assigns SNMP access based on specified strings.
IP Trap Managers Specifies management stations that will receive authentication
18 VH-8G User Interface VH-8G
Issue a trap message to specified IP trap managers whenever
authentication of an SNMP request fails. (The default is enabled.)
failure messages or other trap messages from the switch.
Configuring Community Names
The following figure and table describe how to configure the community
strings authorized for management access. Up to 5 community names
may be entered.
Vertical Horizon Local Management -- VH-8G
SNMP Configuration : SNMP Communities
Community Name Access Status
2. private READ/WRITE ENABLED
3.
4.
5.
Use <TAB> or arrow keys to move, other keys to make changes.
1. public READ ONLY ENABLED
<APPLY> <OK> <CANCEL>
Figure 2-13. SNMP Communities
Parameter Description
Community Name A community entry authorized for management access.
Maximum string length : 20 characters
Access Management access is restricted to Read Only or Read/Write.
Status Sets administrative status of entry to enabled or disabled.
Note: The default community strings are “public” with Read Only access, and
“private” with Read/Write access.
9033640 VH-8G User Interface 19
Configuring IP Trap Managers
The following figure and table describe how to specify management
stations that will receive authentication failure messages or other trap
messages from the switch. Up to 5 trap managers may be entered.
Vertical Horizon Local Management -- VH-8G
SNMP Configuration : IP Trap Managers
IP Address Community Name Status
2.
3.
4.
5.
Use <TAB> or arrow keys to move, other keys to make changes.
1. 10.1.0.23 public DISABLED
<APPLY> <OK> <CANCEL>
Figure 2-14. IP Trap Managers
Parameter Description
IP Address IP address of the trap manager.
Community Name A community specified for trap management access.
Status Sets administrative status of selected entry to enabled or
disabled.
20 VH-8G User Interface VH-8G
Console Login Configuration
Use the Management Setup: Console Login Configuration to restrict
management access based on specified user names and passwords, or
to set the invalid password threshold and timeout. There are only two user
types defined, ADMIN (Administrator) and GUEST, but you can set up to
five different user names and passwords. Only Administrators have write
access for parameters governing the switch. You should therefore assign
a user name and password to the default Administrator as soon as
possible, and store it in a safe place. (If for some reason your password
is lost, or you cannot gain access to the system configuration program,
contact Enterasys Technical Support for assistance.) The parameters
shown on this screen are indicated in the following figure and table.
Vertical Horizon Local Management -- VH-8G
Console Login Configuration
Lock-out Time (in minutes) : 0
User Type User Name Password
------------------------------------------------
1. ADMIN admin
2. GUEST guest
3.
4.
5.
Use <TAB> or arrow keys to move, other keys to make changes.
Password Threshold : 3
<APPLY> <OK> <CANCEL>
Figure 2-15. Console Login Configuration
Parameter Default Description
Password Threshold 3 Sets the password intrusion threshold which limits
Lock-out Time 0 The time (in seconds) the management console
Admin* name: admin
password: null
Guest* name: guest
password: null
* Passwords can consist of up to 11 alphanumeric characters and are not case
sensitive.
the number of failed logon attempts.
Range : 0~65535
will be disabled, due to an excessive number of
failed logon attempts.
Range : 0~65535
Administrator has access privilege of Read/Write
for all screens.
Guest has access privilege of Read Only for all
screens.
9033640 VH-8G User Interface 21
Downloading System Software
Using TFTP Protocol to Download Over the Network
Use the TFTP Download menu to load software updates into the switch.
The download file should be an VH-8G file from Enterasys; otherwise the
switch will not accept it. The success of the download operation depends
on the accessibility of the TFTP server and the quality of the network
connection. After downloading the new software, the switch will
automatically restart itself. Parameters shown on this screen are
indicated in the following figure and table.
Vertical Horizon Local Management -- VH-8G
TFTP Download
Download Server IP : 0.0.0.0
Agent Software Upgrade : ENABLED
Download Filename : agent-v2.04
Download Mode : PERMANENT
Use <TAB> or arrow keys to move, other keys to make changes.
[Process TFTP Download]
Download Status : Complete
<APPLY> <OK> <CANCEL>
Figure 2-16. TFTP Download
Parameter Description
Download Server IP IP address of a TFTP server.
Agent Software
Upgrade
Download
Filename
Download Mode Indicates a download to permanent flash ROM.
[Process TFTP
Download]
Download Status Indicates if a download is “Complete” or “In Progress.”
Indicates that the switch is enabled for software upgrades.
The binary file to download to the switch.
Issues a request to the TFTP server to download the specified
file.
22 VH-8G User Interface VH-8G
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