Cabletron Systems SmartSTACK ELS100-S24TX2M Programming manual

9033259
SmartSTACK
ELS100-S24TX2M
FAST ETHERNET SWITCH
MANAGEMENT GUIDE

Notice
9 033 25 9 iii
NOTICE
Cabletron Systems 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 Cabletron
Systems to determine whetherany such changes have been made.
The hardware, firmware, or software described in this manual is subject to change without notice.
IN NO EVENT SHALL CABLETRON SYSTEMS BE LIABLE FOR ANY INCIDENTAL,
INDIRECT, SPECIAL, OR CONSEQUENTIAL DAMAGESWHATSOEVER (INCLUDING BUT
NOT LIMITED TO LOST PROFITS) ARISING OUTOF OR RELATED TO THIS MANUAL OR
THE INFORMATIONCONTAINED IN IT, EVEN IFCABLETRON SYSTEMS HASBEEN
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DAMAGES.
2000 by Cabletron Systems, Inc., P.O. Box 5005, Rochester, NH 03866-5005
All Rights Reserved
Printed in Taiwan, R.O.C.
OrderNumber: 9033259 January 2000
Cabletron, Cabletron Systems, and SmartSTACK are trademarks orregistered trademarks of
Cabletron Systems, Inc.
Microsoft, Windows, Windows 95,Windows 98, andWindows NT are either trademarks or registered
trademarks of Microsoft Corporation.
Netscape and Netscape Navigator aretrademarks of Netscape Communications Corporation.
All otherproduct names mentioned in this manual may be trademarks or registered trademarks of
their respective companies.
Only qualified personnel should perform installation
procedures.

90 33 259 Table of Contents v
TABLE OF CONTENTS
1. Management Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Configuration Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Required Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Console Port (Out-of-Band) Connections . . . . . . . . . . . . . . . . . . . . 9
Remote Management via the Console Port . . . . . . . . . . . . . . . . . . 10
In-Band Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2. ELS100-S24TX2M User Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Overv iew . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
User Ac cess . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Factory Defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Main Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
System I nform ation Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Displaying Sys tem Information . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Displaying Switch Version and Module Information. . . . . . . . . . . . 21
Management Setup Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Changing the Network Configuration. . . . . . . . . . . . . . . . . . . . . . . 23
IP Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
IP Connectivity Test (Ping) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
HTTP Conf iguration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Configuring t he Serial Port. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Assigning SN MP Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Console Login Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Downloading System Software . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Configuring t he Switc h . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Configuring Port Param eters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Viewing the Current Port C onfiguration . . . . . . . . . . . . . . . . . . . . . 36
Using the Spanning Tree Algorithm . . . . . . . . . . . . . . . . . . . . . . . 37
Viewing the Current Spanning Tree Configuration . . . . . . . . . . . . 40
Using a Mirror Port for Analys is . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Configuring Port Trunks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
IGMP Multicast F iltering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Configuring Bridge MIB Extensions . . . . . . . . . . . . . . . . . . . . . . . . 48
Configuring T raffic Classes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Configuring Virtual LANs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Monit oring the Sw itch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Displaying Port Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Displaying RM ON Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Displaying the Unicast Addres s Table . . . . . . . . . . . . . . . . . . . . . . 62
Displaying the IP Multicast Regis tration T able. . . . . . . . . . . . . . . . 63
Configuring St atic Unicast Address es . . . . . . . . . . . . . . . . . . . . . . 64
Resett ing t he System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Logging Off the System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

vi Table of Contents ELS100-S24TX2M
3. Configuring & M onitoring the Swit ch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Common Tasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Setting Passw ord Protect ion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Assigning an IP Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Checking Network Configurat ion Status. . . . . . . . . . . . . . . . . . . . . . . . 69
Connecting via Telnet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Setting SNMP Management Access . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Viewing Switch Statist ics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Configuring Port Mirroring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Downloading a Software Upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Downloading Via the Serial Port . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Downloading Via TFTP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Configuring Spanning Tree Parameters. . . . . . . . . . . . . . . . . . . . . . . . 74
Configuring VLANs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Configuring C lass of Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Configuring Port Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Configuring t he Unicas t Address T able . . . . . . . . . . . . . . . . . . . . . . . . 77
Setting a Default Gatew ay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Configuring BootP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Configuring Port Trunks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
4. SNMP Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
The SNMP Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
MIB Objects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
RFC 1213 (MIB-II). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
RFC 1573 (Interfaces Evolution MIB) . . . . . . . . . . . . . . . . . . . . . . 83
RFC 1643 (Ethernet-Like MIB) . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
RFC 1493 (Bridge MIB). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
RFC 1757 (RMON MIB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
IEEE 802.1Q (Q-MIB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Cablet ron Propriet ary MIB Ex tensions . . . . . . . . . . . . . . . . . . . . . 84
Compiling M IB Extensions: Cablet ron Websit e . . . . . . . . . . . . . . . . . . 84
APPENDIX A. Spanning Tree Concepts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Spanning Tree Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Spanning Tree Protocol in a Network. . . . . . . . . . . . . . . . . . . . . . . . . . 86
Spanning Tree Protocol Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Spanning Tree Protocol Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Communicating Between Bridges . . . . . . . . . . . . . . . . . . . . . . . . . 88
Selecting a Root Bridge and Designated Bridges . . . . . . . . . . . . . 88
Selecting Designated Ports. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Handling Duplic ate Paths . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Remapping Network Topology . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
APPENDIX B. Virtual LANs (VLANs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
VLANs and Frame Tagging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
ELS100-S24TX2M VLAN Configuration. . . . . . . . . . . . . . . . . . . . . . . . 92
Assigning Ports to VLANs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

90 33 259 Table of Contents vii
Forwarding Tagged/Untagged Frames . . . . . . . . . . . . . . . . . . . . . . . . . 93
Forwarding T raffic wit h U nknow n VLAN Tags . . . . . . . . . . . . . . . . . . . 93
Autom atic VLAN R egistration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
APPENDIX C. Class of Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
APPENDIX D. IP Multic ast Filtering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
IGMP Snooping and IP Multicast Filtering . . . . . . . . . . . . . . . . . . . . . . 97
INDEX

viii Table of Contents ELS100-S24TX2M

90 33 259 Management Overview 9
1. MANAGEMENT OVERVIEW
Configuration Options
For advanced management capability, the ELS100-SMGMT
SmartSTACK Management Module provides a menu-driven system
configuration program. This program can be accessed by a direct or
modem connection to the serial port on the Management Module (out-of-
band), or by a Telnet connection over the network (in-band).
The Management Module is based on SNMP (Simple Network
Management Protocol). This SNMP agent permits a switch stack to be
managed from any PC in the network using in-band management
software (such as Cabletron’s SPECTRUM).
The Management Module also includes an embedded HTTP Web agent.
This Web agent can be accessed using a standard Web browser from any
computer attached to the network. Refer to the Web Management Guide
for more information.
The system configuration program and the SNMP agent 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 Management Module. 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 ELS100-S24TX2M User Guide.
When attaching to aPC, 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).

10 Management Overview ELS100-S24TX2M
Also be sure to set flow control to “none.” (Refer to “C onfi gurin g the
Serial Port” on page 27 for a complete description of configuration
options.)
Remote Management via the Console Port
Configure the Switch Site
Connect the Management Module’s DB9 serial port to the modem’s serial
port using standard cabling. For most modems which use a 25-pin port,
you will have to provide an RS232 cable with a 9-pin connector on one
end and a 25-pin connector on the other end. Set the modem at the
switch’s site to force auto-answer mode. The following is a sample
initialization string: “ATQ1S0=1&D0&K0&W” as defined below:
Q1 : Inhibit result codes to DTE
S0=1 : Auto answer on first ring
D0 : Don’t c are DTR
K0 : Disables DTE/DCE flow control
W : Write command to modem memory
Configure the Remote Site
At the remote site, connect the PC’s COM port (COM 1~4) tothe modem’s
serial port. 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, 19200 bps and no flow control.
In-Band Connections
Priorto accessingthe Management Module 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 Management Module 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 Conf iguration me nu to spec if y the
maximum number of simultaneous Telnet sessions that
are supported by the system.

90 33 259 Management Overview 11
In-Band Network Connection
The on-board configuration program can be accessed using Telnet from
any computer attached to the network. The switch and stack 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 such as Cabletron’s SPECTRUM.

12 Management Overview ELS100-S24TX2M

90 33 259 ELS100-S24TX2M User Interface 13
2. ELS100-S24TX2M USER INTERFACE
Overview
Access is gained to the console menus by connecting a terminal to the
console port (with a direct cable connection or over modems), or using
Telnet to access the Management Module over the network. These
menus allow you to reconfigure the switch, as well as to monitor the status
and performance of the switch or the attached stack. 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.
Figure 2-1. Sample Main Menu
Menuname
Selectable
Items
Screen prompt
and message
area
SmartSTACK Local Management -- ELS100-S24TX2M
Main Menu
System Information Menu...
Management Setup Menu...
Device Control Menu...
Network Monitor Menu...
System Restart Menu...
Ex it
Use <TAB> or arrow keys to move.<Enter> to select.

14 ELS100-S24TX2M User Interface ELS100-S24TX2M
User Access
Once a direct connection to the serial 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 thecorrect
password; on the third failed attempt the current
connection is terminated.

90 33 259 ELS100-S24TX2M User Interface 15
Factory Defaults
Table 2-1 lists the default settings for switch configuration parameters.
Each parameter can be changed via the console menus or Telnet.
Table 2-1. Factory Default Settings
Parameter Default Value
Multicast Filtering
GMRP Disabled
IGMP Multicast Filtering Disabled
Po rt Conf ig urat io n
Flow Control Disabled
Speed and Duplex Auto
Admin Enabled
Port Priorit y
Def ault Ingress User P riority 0
Sp an ning Tre e Algo rith m
Act ive Aging Time 300
Bridge Priority 32768
Forwar d De lay 15
Hello Time 2
Max Age 20
Path Cost 4 -1000Mbps ports
19 - 10 0M bp s po rt s
100 -10Mbpsports
Port Priority 128
Sp an ning Tr ee Pr oto col En ab le d
Syste m Conf ig ur at io n
Boot P Enable Disa bled
Pa ssword <no ne>
Screen Timeout 10 min
Se nd Au the nt ica tion Fail Tr aps En ab le d
SNMP Community Name public, private
Terminal B aud Rate Auto
User Names admin, guest

16 ELS100-S24TX2M User Interface ELS100-S24TX2M
Virtua l LA Ns
Acce pt able VL AN Fr ame Typ e All
Configurable PVID Tagging Yes
GVRP Disabled
Unt agg ed VL AN Gr ou p Assign me nt 1
VL AN In gress Filte rin g False
VLAN Learning SVL
Parameter Default Value

90 33 259 ELS100-S24TX2M User Interface 17
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.
Figure 2-2. Main Menu
SmartSTACK Local Management -- ELS100-S24TX2M
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.
Selection Description
System Information Menu
System Information Provides basic system description, including contact
in fo rm at io n.
Switch In for mati on Sho ws ha rd war e/f ir mw are ve rsio n n um be rs, po wer sta tus,
an d e xpa nsion m odu les u sed i n t he stack.
Mana ge me nt Se tup Menu
Network Configuration Includes IP setup, Ping facility, HTTP (Web Agent) setup,
Telnet configuration, and MAC address.
Serial Po rt
Configuration
Setscommunication parametersfor the serialport, including
ma na ge me nt mod e, ba ud r at e, con sole tim e-ou t, an d scr een
data refre sh interval.
SNMP Con figur a ti on Activat es t ra ps; and co nfi gu res co mmun ities a nd tr ap
ma na ge rs.
Con sole Lo gin
Configuration
Sets user names and passwords for system access, as well
as the invalid password threshold and lockout time.
TFTP Download Downloads new version of firmware to update your system
(in-band).

18 ELS100-S24TX2M User Interface ELS100-S24TX2M
Selection Description
Device Control Menu
Po r t Con figu ra tion Ena ble s an y po rt , e nab les/d i sable s fl ow co ntr o l, an d se ts
communication mode to auto-negotiation, full duplex or half
du plex.
Po r t In for mati o n Disp la ys op er at io na l stat us, in clu din g link st ate , flow co nt ro l
method, and duplex mode.
Sp an ning Tr ee
Configuration
Enables Spanning Tree Algorithm; also sets parameters for
he llo time , m axi mum m essa ge ag e, switch p rior ity, and
forwar d dela y; a s well as p or t p r io rity an d p ath cost .
Sp an ning Tr ee
Informatio n
Displays full listing of parameters for the Spanning Tree
Al go ri th m.
Mirror Port
Configuration
Set s th e so urce a nd ta rg et po rts for m irror ing .
Po r t Tr unkin g
Configuration
Specifies ports to group into aggregate trunks.
IGMP Configuration Configures IGMP multicast filtering.
Ext ented Bridg e
Configuration
Displays/configuresextended bridge capabilities provided by
this switch, including support for traffic classes, GMRP
mu lticast f il te r in g, an d V LAN e xten sion s.
8 02. 1P Co nf ig ur at io n Co nf ig ur es def au lt po rt pr ior iti es a nd qu eu e a ssig nmen ts.
8 02. 1Q VLA N
Base Information
Displays basic VLAN information, such as VLAN version
nu mb er an d ma ximu m V LA Ns supp orte d.
8 02. 1Q VLA N Cu rre nt
Tab le I nfo rmat io n
Displays VLAN groups and port members.
8 02. 1Q VLA N Sta tic
Tab le Co nfigu r ation
Co nf ig ur es VLA N gr ou ps via stat ic assign me nt s, includ i ng
sett ing port members, or restricting ports from being
dyn amica lly ad ded to a po rt by t he GVRP pr oto col.
8 02. 1Q VLA N
Port Configuration
Displays/configures port-specific VLAN settings, including
PVI D, i ngre ss fi lter ing , an d GVRP.
Port GA RP
Configuration
Configures settings used in multicast filtering.
Network Monitor Menu
Port Statistics Displays statistics on network traffic passing through the
select ed po rt.
RMON Statistics Displays detailed statistical information for the selected port
such as packet type and frame size counters.
Unica st Ad dr ess Ta ble Pr ovide s fu ll a dd re ss listing , as we l l as se arch and clea r
functions.
IP Multicast
Registration Table
Displays all the multicast groups active on this switch,
in clud in g mu lt ica st IP ad dresse s a nd cor re spo nd in g VLA N
IDs.
St atic Un icast Ad dr ess
Tab le Co nfigu r ation
Use d to m a nua lly con fi gure ho st MAC a ddr e sses in the
unica st table.
System Restart Restarts system with options to use POST, or to retain
fact ory defaults, I P se ttings, o r u ser auth en ticatio n setting s.
Exit Exits th e conf ig urat io n pr og ra m.

90 33 259 ELS100-S24TX2M User Interface 19
System Information Menu
Use the System Information Menu to display a basic description of the
switch, including contact information, and hardware/firmware versions.
Figure 2-3. System Information Menu
SmartSTACK Local Management -- ELS100-S24TX2M
System Information Menu
System Information ...
Switch Information ...
<OK>
Use <TAB> or arrow keys to move.< Enter> to select.
Sel ection Descr ipti on
System Information Provides basic system description, including contact
information .
Switch Information Shows hardware/firmware version numbers, power status, and
expansion modules used inthe stack.

20 ELS100-S24TX2M User Interface ELS100-S24TX2M
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.
Figure 2-4. System Information
SmartSTACK Local Management -- ELS100-S24TX2M
System Information
System Description : SmartSTACK ELS1000-S24TX2M
System Object ID : 1.3.6.1.4.1.52.3.9.1.10.7
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
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Par ame te r De scr ipti on
System Description System hardware description.
System Object ID MIB II o bject identifier f or switchís ne twork management
subsystem.
Syste m Up Time L en gth of ti me th e curre nt ma na ge me nt age nt ha s be en
run nin g. ( Not e th at the fir st va lu e is 1/1 00 seco nd s.)
System Name*Name assigned to the switch system.
System Contact*Contact person for the system.
System Location*Specifies the area or location where the system resides.
*Ma ximum string le ngt h is 99 , but t he s cre en only displ ays 4 5 c hara ct ers . You
ca n use the arr ow ke ys to browse the whole st ring.