D-Link DGS-3100 SERIES User manual

D-Link™DGS-3100 SERIES
GIGABIT STACKABLE MANAGED SWITCH
CLI Manual
V2.10

Information in this document is subject to change without notice.
© 2007 D-Link Computer Corporation. All rights reserved.
Reproduction in any manner whatsoever without the written permission of D-Link Computer Corporation
is strictly forbidden.
Trademarks used in this text: D-Link and the D-Link logo are trademarks of D-Link Computer
Corporation; Microsoft and Windows are registered trademarks of Microsoft Corporation.
Other trademarks and trade names may be used in this document to refer to either the entities claiming
the marks and names or their products. D-Link Computer Corporation disclaims any proprietary interest
in trademarks and trade names other than its own.
FCC Warning
This equipment has been tested and found to comply with the limits for a Class A digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against
harmful interference when the equipment is operated in a commercial environment. This equipment
generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance
with this user’s guide, may cause harmful interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful interference in which case the user will be
required to correct the interference at his own expense.
CE Mark Warning
This is a Class A product. In a domestic environment, this product may cause radio interference in
which case the user may be required to take adequate measures.
Warnung!
Dies ist ein Produkt der Klasse A. Im Wohnbereich kann dieses Produkt Funkstoerungen verursachen. In
diesem Fall kann vom Benutzer verlangt werden, angemessene Massnahmen zu ergreifen.
Precaución!
Este es un producto de Clase A. En un entorno doméstico, puede causar interferencias de radio, en
cuyo case, puede requerirse al usuario para que adopte las medidas adecuadas.
Attention!
Ceci est un produit de classe A. Dans un environnement domestique, ce produit pourrait causer des
interférences radio, auquel cas l`utilisateur devrait prendre les mesures adéquates.
Attenzione!
Il presente prodotto appartiene alla classe A. Se utilizzato in ambiente domestico il prodotto può causare
interferenze radio, nel cui caso è possibile che l`utente debba assumere provvedimenti adeguati.
VCCI Warning
May, 2008

Table of Contents
INTRODUCTION ......................................................................................................................................................1
USING THE CONSOLE CLI.....................................................................................................................................4
COMMAND SYNTAX ...............................................................................................................................................8
BASIC SWITCH COMMANDS...............................................................................................................................11
create account...................................................................................................................................................................... 12
config account..................................................................................................................................................................... 12
show account....................................................................................................................................................................... 13
show session........................................................................................................................................................................ 13
show switch......................................................................................................................................................................... 14
show serial_port .................................................................................................................................................................. 15
config serial_port ................................................................................................................................................................ 15
enable clipaging .................................................................................................................................................................. 16
disable clipaging ................................................................................................................................................................. 16
delete account...................................................................................................................................................................... 17
enable web .......................................................................................................................................................................... 17
disable web.......................................................................................................................................................................... 17
save ..................................................................................................................................................................................... 18
reboot .................................................................................................................................................................................. 18
reset..................................................................................................................................................................................... 19
login .................................................................................................................................................................................... 19
logout .................................................................................................................................................................................. 20
ping ..................................................................................................................................................................................... 20
show cpu utilization ............................................................................................................................................................ 21
show configuration.............................................................................................................................................................. 21
enable jumbo_frame............................................................................................................................................................ 22
disable jumbo_frame........................................................................................................................................................... 22
show jumbo_frame.............................................................................................................................................................. 23
locate................................................................................................................................................................................... 23
SWITCH PORT COMMANDS................................................................................................................................24
config ports ......................................................................................................................................................................... 24
show ports ........................................................................................................................................................................... 25
config ports description....................................................................................................................................................... 26
delete ports description ....................................................................................................................................................... 26
show ports description ........................................................................................................................................................ 26
NETWORK MANAGEMENT (SNMP) COMMANDS .............................................................................................28
create snmp user.................................................................................................................................................................. 29
delete snmp user.................................................................................................................................................................. 30
show snmp user................................................................................................................................................................... 30
create snmp view................................................................................................................................................................. 31
delete snmp view................................................................................................................................................................. 31
show snmp view.................................................................................................................................................................. 32
create snmp community ...................................................................................................................................................... 33
delete snmp community ...................................................................................................................................................... 33
show snmp community ....................................................................................................................................................... 34
config snmp engineID......................................................................................................................................................... 34

show snmp engineID........................................................................................................................................................... 35
create snmp group ............................................................................................................................................................... 35
delete snmp group ............................................................................................................................................................... 37
show snmp groups............................................................................................................................................................... 37
create snmp host.................................................................................................................................................................. 38
delete snmp host.................................................................................................................................................................. 39
show snmp host................................................................................................................................................................... 39
create trusted_host............................................................................................................................................................... 40
show trusted_host................................................................................................................................................................ 40
delete trusted_host............................................................................................................................................................... 41
enable snmp traps................................................................................................................................................................ 41
disable snmp traps............................................................................................................................................................... 41
enable snmp authenticate trap ............................................................................................................................................. 42
disable snmp authenticate trap ............................................................................................................................................ 42
show snmp traps.................................................................................................................................................................. 42
config snmp system_contact ............................................................................................................................................... 43
config snmp system_location.............................................................................................................................................. 43
config snmp system_name .................................................................................................................................................. 44
DOWNLOAD/UPLOAD COMMANDS ...................................................................................................................45
Download............................................................................................................................................................................ 45
Upload................................................................................................................................................................................. 46
config dhcp_auto enable ..................................................................................................................................................... 47
show dhcp_auto................................................................................................................................................................... 47
config firmware................................................................................................................................................................... 48
show firmware information................................................................................................................................................. 48
NETWORK MONITORING COMMANDS ..............................................................................................................49
show packet ports................................................................................................................................................................ 49
show error ports .................................................................................................................................................................. 50
show utilization................................................................................................................................................................... 51
clear counters ...................................................................................................................................................................... 51
clear log............................................................................................................................................................................... 52
show log.............................................................................................................................................................................. 52
enable syslog....................................................................................................................................................................... 53
disable syslog ...................................................................................................................................................................... 53
show syslog......................................................................................................................................................................... 54
create syslog host ................................................................................................................................................................ 54
config syslog host................................................................................................................................................................ 56
delete syslog host ................................................................................................................................................................ 58
show syslog host ................................................................................................................................................................. 59
SPANNING TREE COMMANDS............................................................................................................................60
config stp............................................................................................................................................................................. 60
config stp ports.................................................................................................................................................................... 61
config stp version................................................................................................................................................................ 62
enable stp ............................................................................................................................................................................ 63
disable stp............................................................................................................................................................................ 63
show stp .............................................................................................................................................................................. 64
show stp ports ..................................................................................................................................................................... 65

show stp instance_id ........................................................................................................................................................... 65
show stp mst_config_id ...................................................................................................................................................... 66
config stp instance_id.......................................................................................................................................................... 67
config stp priority................................................................................................................................................................ 68
config stp mst_config_id..................................................................................................................................................... 68
config stp mst_ports ............................................................................................................................................................ 69
FORWARDING DATABASE COMMANDS...........................................................................................................71
create fdb............................................................................................................................................................................. 71
create multicast_fdb ............................................................................................................................................................ 72
config multicast_fdb ........................................................................................................................................................... 72
config fdb aging_time ......................................................................................................................................................... 73
delete fdb............................................................................................................................................................................. 73
clear fdb .............................................................................................................................................................................. 74
show multicast_fdb ............................................................................................................................................................. 74
show fdb.............................................................................................................................................................................. 75
BROADCAST STORM CONTROL COMMANDS .................................................................................................77
config traffic control ........................................................................................................................................................... 77
show traffic control ............................................................................................................................................................. 78
QOS COMMANDS .................................................................................................................................................79
config scheduling ................................................................................................................................................................ 79
show scheduling.................................................................................................................................................................. 80
config 802.1p user_priority................................................................................................................................................. 81
show 802.1p user_priority................................................................................................................................................... 81
config 802.1p default_priority ............................................................................................................................................ 82
show 802.1p default_priority .............................................................................................................................................. 83
config scheduling_mechanism ............................................................................................................................................ 83
show scheduling_mechanism.............................................................................................................................................. 84
config rate_limit.................................................................................................................................................................. 85
show rate_limit.................................................................................................................................................................... 85
PORT MIRRORING COMMANDS .........................................................................................................................87
config mirror ....................................................................................................................................................................... 87
delete mirror........................................................................................................................................................................ 88
show mirror......................................................................................................................................................................... 88
VLAN COMMANDS ...............................................................................................................................................89
create vlan ........................................................................................................................................................................... 89
delete vlan ........................................................................................................................................................................... 90
config vlan .......................................................................................................................................................................... 90
config gvrp .......................................................................................................................................................................... 91
enable gvrp.......................................................................................................................................................................... 91
disable gvrp......................................................................................................................................................................... 92
show vlan ............................................................................................................................................................................ 92
show gvrp............................................................................................................................................................................ 93
LINK AGGREGATION COMMANDS ....................................................................................................................94
create link_aggregation ....................................................................................................................................................... 94
delete link_aggregation ....................................................................................................................................................... 95
config link_aggregation ...................................................................................................................................................... 95
show link_aggregation ........................................................................................................................................................ 96

BASIC IP COMMANDS..........................................................................................................................................97
config ipif system................................................................................................................................................................ 97
show ipif.............................................................................................................................................................................. 98
IGMP SNOOPING COMMANDS............................................................................................................................99
config igmp_snooping......................................................................................................................................................... 99
config router_port ............................................................................................................................................................. 100
enable igmp_snooping ...................................................................................................................................................... 100
disable igmp_snooping ..................................................................................................................................................... 101
show igmp_snooping ........................................................................................................................................................ 101
show igmp_snooping group .............................................................................................................................................. 102
show igmp_snooping forwarding...................................................................................................................................... 102
show router_port ............................................................................................................................................................... 103
802.1X COMMANDS............................................................................................................................................104
enable 802.1x .................................................................................................................................................................... 104
disable 802.1x ................................................................................................................................................................... 105
show 802.1x auth_state ..................................................................................................................................................... 105
show 802.1x auth_configuration....................................................................................................................................... 106
config 802.1x auth_parameter ports.................................................................................................................................. 107
config 802.1x init .............................................................................................................................................................. 108
config 802.1x auth_protocol ............................................................................................................................................. 109
config 802.1x reauth ......................................................................................................................................................... 109
config radius add............................................................................................................................................................... 110
config radius delete ........................................................................................................................................................... 110
config radius...................................................................................................................................................................... 111
show radius ....................................................................................................................................................................... 111
config 802.1x auth_mode.................................................................................................................................................. 112
config guest_vlan .............................................................................................................................................................. 112
config guest_vlan ports ..................................................................................................................................................... 113
show guest_vlan................................................................................................................................................................ 113
MAC AUTHENTICATION COMMANDS..............................................................................................................114
enable mac_based_access_control .................................................................................................................................... 114
disable mac_based_access_control ................................................................................................................................... 115
config mac_based_access_control .................................................................................................................................... 116
show mac_based_access_control ...................................................................................................................................... 117
PORT SECURITY COMMANDS..........................................................................................................................118
config port_security .......................................................................................................................................................... 118
show port_security ............................................................................................................................................................ 119
TIME AND SNTP COMMANDS ...........................................................................................................................120
config sntp......................................................................................................................................................................... 120
show sntp .......................................................................................................................................................................... 121
enable sntp ........................................................................................................................................................................ 121
disable sntp........................................................................................................................................................................ 122
config time date................................................................................................................................................................. 122
config time_zone............................................................................................................................................................... 123
config dst........................................................................................................................................................................... 123
show time .......................................................................................................................................................................... 125
ROUTING TABLE COMMANDS .........................................................................................................................126

create iproute..................................................................................................................................................................... 126
delete iproute..................................................................................................................................................................... 126
show iproute...................................................................................................................................................................... 127
ARP COMMANDS................................................................................................................................................128
create arpentry................................................................................................................................................................... 128
config arpentry .................................................................................................................................................................. 128
delete arpentry................................................................................................................................................................... 129
show arpentry.................................................................................................................................................................... 130
config arp_aging time ....................................................................................................................................................... 130
clear arptable..................................................................................................................................................................... 131
BANNER COMMANDS........................................................................................................................................132
config login_banner .......................................................................................................................................................... 132
COMMAND HISTORY LIST COMMANDS ..........................................................................................................133
?......................................................................................................................................................................................... 133
show command_history .................................................................................................................................................... 134
dir ...................................................................................................................................................................................... 134
config command_history................................................................................................................................................... 135
SSH COMMANDS................................................................................................................................................136
enable ssh.......................................................................................................................................................................... 136
disable ssh ......................................................................................................................................................................... 137
config ssh authmode.......................................................................................................................................................... 137
show ssh authmode ........................................................................................................................................................... 137
config ssh server................................................................................................................................................................ 138
show ssh server ................................................................................................................................................................. 138
show ssh algorithm............................................................................................................................................................ 139
config ssh crypto ............................................................................................................................................................... 139
show ssh crypto................................................................................................................................................................. 140
delete ssh crypto................................................................................................................................................................ 141
SSL COMMANDS ................................................................................................................................................142
enable ssl........................................................................................................................................................................... 142
disable ssl.......................................................................................................................................................................... 143
show ssl............................................................................................................................................................................. 143
show ssl cachetimeout....................................................................................................................................................... 144
crypto certificate (generate) .............................................................................................................................................. 144
crypto certificate (request) ................................................................................................................................................ 145
crypto certificate (import) ................................................................................................................................................. 146
config ssl certificate .......................................................................................................................................................... 146
show crypto certificate mycertificate ................................................................................................................................ 147
ACCESS AUTHENTICATION CONTROL COMMANDS ....................................................................................148
create authen_login method_list_name............................................................................................................................. 149
config authen_login........................................................................................................................................................... 149
delete authen_login method_list_name............................................................................................................................. 150
show authen_login ............................................................................................................................................................ 151
create authen_enable method_list_name........................................................................................................................... 151
config authen_enable ........................................................................................................................................................ 152
delete authen_enable method_list_name........................................................................................................................... 153
show authen_enable .......................................................................................................................................................... 154

config authen application .................................................................................................................................................. 154
show authen application.................................................................................................................................................... 155
create authen server_host .................................................................................................................................................. 156
config authen server_host ................................................................................................................................................. 157
delete authen server_host .................................................................................................................................................. 158
show authen server_host ................................................................................................................................................... 158
local_enable admin ........................................................................................................................................................... 159
config admin local_enable ................................................................................................................................................ 159
LACP COMMANDS .............................................................................................................................................161
config lacp port_priority ................................................................................................................................................... 161
show lacp .......................................................................................................................................................................... 161
STACKING COMMANDS ....................................................................................................................................163
config box_id .................................................................................................................................................................... 163
show stack_information .................................................................................................................................................... 163
POE COMMANDS................................................................................................................................................165
config poe.......................................................................................................................................................................... 165
config poe ports................................................................................................................................................................. 166
show poe ........................................................................................................................................................................... 166
ACCESS CONTROL LIST COMMANDS ............................................................................................................168
create access_profile (for Ethernet)................................................................................................................................... 168
create access_profile (for IP) ............................................................................................................................................ 169
config access_profile (for Ethernet).................................................................................................................................. 171
config access_profile (for IP)............................................................................................................................................ 172
config access_profile......................................................................................................................................................... 174
delete access_profile ......................................................................................................................................................... 175
show access_profile .......................................................................................................................................................... 175
TRAFFIC SEGMENTATION COMMANDS..........................................................................................................177
config traffic_segmentation .............................................................................................................................................. 177
show traffic_segmentation ................................................................................................................................................ 177
TRACEROUTE COMMANDS ..............................................................................................................................179
traceroute........................................................................................................................................................................... 179
SAFEGUARD COMMANDS ................................................................................................................................181
enable safeguard................................................................................................................................................................ 181
disable safeguard............................................................................................................................................................... 181
show safeguard.................................................................................................................................................................. 182
DEVICE SPECIFICATIONS .................................................................................................................................183
Technical Specifications ................................................................................................................................................... 183
Cable Lengths ................................................................................................................................................................... 185

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1
INTRODUCTION
The DGS-3100 series is a D-Link DGS-3100 switch family. The DGS-3100 series of products family
consists of 24 / 48 -port 10/100/1000Base-T PoE / NonPoE L2 Stackable Management Switches with 4
Combo SFPs and DGS-3100-24TG, a switch with 16 SFPs and 8 copper GE ports.
The Switch can be managed through the Switch’s serial port, Telnet, or the Web-based management
agent. The Command Line Interface (CLI) can be used to configure and manage the Switch via the serial
port or Telnet interfaces.
This manual provides a reference for all of the commands contained in the CLI. Configuration and
management of the Switch via the Web-based management agent is discussed in the Manual. For
detailed information on installing hardware please refer also to the Manual.
Accessing the Switch via the Serial Port
The Switch’s serial port’s default settings are as follows:
•9600 bps
•No parity
•8 data bits
•1 stop bit
A computer running a terminal emulation program capable of emulating a VT-100 terminal and a serial
port configured as above is then connected to the Switch’s serial port via an RS-232 DB-9 cable.
With the serial port properly connected to a management computer, the following screen should be
visible. If this screen does not appear, try pressing Ctrl+r to refresh the console screen.
[
Figure 1–1. Initial CLI screen
The initial username is admin (lower case). Press the Enter key twice to display the CLI input cursor.
This is the command line where all commands are input.
Setting the Switch’s IP Address
Each Switch must be assigned its own IP Address, which is used for communication with an SNMP
network manager or other TCP/IP application (for example BOOTP, TFTP). The Switch’s default IP
address is 10.90.90.90. You can change the default Switch IP address to meet the specification of your
networking address scheme.
The Switch is also assigned a unique MAC address by the factory. This MAC address cannot be changed,
but can be found on the initial boot console screen – shown below.

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Figure 1–2. Boot Screen
The Switch’s MAC address can also be found in the Web management program on the Device
Information window on the Configuration menu.
The IP address for the Switch must be set before it can be managed with the Web-based manager. The
Switch IP address can be automatically set using BOOTP or DHCP protocols, in which case the actual
address assigned to the Switch must be known.
The IP address may be set using the Command Line Interface (CLI) over the console serial port as
follows:
1. Starting at the command line prompt, enter the commands config ipif System vlan default ipaddress
xxx.xxx.xxx.xxx/yyy.yyy.yyy.yyy. Where the letter x represents the IP address to be assigned to the IP interface
named System and the letter y represents the corresponding subnet mask.
2. Alternatively, enter config ipif System ipaddress xxx.xxx.xxx.xxx/z. Where the letter x represents the IP address to
be assigned to the IP interface named System and the letter z represents the corresponding number of subnets in
CIDR notation.
The IP interface named System on the Switch can be assigned an IP address and subnet mask which
can then be used to connect a management station to the Switch’s Telnet or Web-based management
agent.
Figure 1–3. Assigning an IP Address

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In the above example, the Switch was assigned an IP address of 1.1.1.10 with a subnet mask of 255.0.0.0.
The system message Success indicates that the command was executed successfully. The Switch can
now be configured and managed via Telnet, SNMP MIB browser and the CLI or via the Web-based
management agent using the above IP address to connect to the Switch.
NOTE: The DGS-3100 series of switches have the capability to be configured to have no IP
address. This function maybe used to disable Layer 3 functions of the Switch. When the IP
address is disabled, the Switch can only be managed through the console port. Other
management applications such as Telnet, Web-based and SNMP cannot be used to manage the
Switch when the switch has no IP address.

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2
USING THE CONSOLE CLI
The Switch supports a console management interface that allows the user to connect to the Switch’s
management agent via a serial port and a terminal or a computer running a terminal emulation program.
The console can also be used over the network using the TCP/IP Telnet protocol. The console program
can be used to configure the Switch to use a SNMP-based network management software over the
network.
This chapter describes how to use the console interface to access the Switch, change its settings, and
monitor its operation.
NOTE: Switch configuration settings are saved to non-volatile RAM using the save command.
The current configuration will then be retained in the Switch’s NV-RAM, and reloaded when the
Switch is rebooted. If the Switch is rebooted without using the save command, the last
configuration saved to NV-RAM is loaded.
Connecting to the Switch
The console interface is used by connecting the Switch to a VT100-compatible terminal or a computer
running an ordinary terminal emulator program (for example, the HyperTerminal program included with
the Windows operating system) using an RS-232C serial cable. Your terminal parameters will need to be
set to:
•VT-100 compatible
•9600 bps
•8 data bits
•No parity
•One stop bit
•No flow control
The same functions may also be accessed over a Telnet interface. Once an IP address for the Switch has
been set, A Telnet program can be used (in VT-100 compatible terminal mode) to access and control the
Switch. All of the screens are identical, whether accessed from the console port or from a Telnet
interface.
After the Switch reboots and you have to logged in, the console looks like this:

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Figure 2–1. Initial Console Screen after Logging In
Commands are entered at the command prompt, DGS3100#.
There are a number of helpful features included in the CLI. Entering the ? command displays a list of all
of the top-level commands.
Figure 2–2. The ? Command
When entering a command without its required parameters, the CLI displays the prompt: command:
config account message and the options listed below.

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Figure 2–3. Example Command Parameter Help
In this case, the command config account was entered with the parameter <username>. The CLI will then
prompt to enter the <username> with the message, command: config account. Every command in the
CLI has this feature, and complex commands have several layers of parameter prompting.
In addition, after typing any given command plus one space, users can see all of the next possible sub-
commands, in sequential order, by pressing the ? key.
To re-enter the previous command at the command prompt, press the up arrow cursor key. The previous
command appears at the command prompt.
Figure 2–4. Using the Up Arrow to Re-enter a Command
In the above example, the command config account was entered without the required parameter
<username>, the CLI returned the command: config account prompt. The up arrow cursor control key
was pressed to re-enter the previous command (config account) at the command prompt. Now the
appropriate username can be entered and the config account command re-executed.
All commands in the CLI function in this way. In addition, the syntax of the help prompts are the same as
presented in this manualangle brackets < > indicate a numerical value or character string. The < > can
also indicate a word with a number for character allowed.
If a command is entered that is unrecognized by the CLI, the top-level commands are displayed under
the Available commands: prompt.

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Figure 2–5. Available Commands
The top-level commands consist of commands such as show or config. Most of these commands
require one or more parameters to narrow the top-level command. This is equivalent to show what? or
config what? Where the what? is the next parameter.
For example, entering the show command with no additional parameters, the CLI will then display all of
the possible next parameters.
Figure 2–6. Next possible completions: Show Command
In the above example, all of the possible next parameters for the show command are displayed. At the
next command prompt in the example, the up arrow was used to re-enter the show command, followed
by the account parameter. The CLI then displays the user accounts configured on the Switch.

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3
COMMAND SYNTAX
The following symbols are used to describe how command entries are made and values and arguments
are specified in this manual. The online help contained in the CLI and available through the console
interface uses the same syntax.
NOTE: All commands are case-sensitive. Be sure to disable Caps Lock or any other unwanted
function that changes text case.
<angle brackets>
Purpose Encloses a variable or value that must be specified.
Syntax create account [admin | oper |user] <username 15>
Description In the above syntax example, supply a username in the
<username> space. Do not type the angle brackets.
Example
Command
create account admin newadmin1
[square brackets]
Purpose Encloses a required value or set of required arguments. One value
or argument can be specified.
Syntax create account [admin | oper |user] <username 15>
Description In the above syntax example, specify admin, oper or a user level
account to be created. Do not type the square brackets.
Example
Command
create account user newuser1
| vertical bar
Purpose Separates two or more mutually exclusive items in a list, one of
which must be entered.
Syntax create account [admin | oper | user] <username 15>
Description In the above syntax example, specify admin, oper, or user. Do not
type the vertical bar.
Example
Command
create account user newuser1
All commands are case-sensitive. Be sure to disable Caps Lock or any other unwanted function that
changes text case.

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{braces}
Purpose Encloses an optional value or set of optional arguments.
Syntax reset
Description execute “reset” will return the switch to its factory default setting.
Example
command
reset
Please be aware that all configuration will be reset to default value.
Are you sure you want to proceed with system reset now? (Y/N)[N] N
Line Editing Key Usage
Delete Deletes the character under the cursor and then shifts the
remaining characters in the line to the left.
Backspace Deletes the character to the left of the cursor and then shifts the
remaining characters in the line to the left.
Insert or Ctrl+R Toggle on and off. When toggled on, inserts text and shifts previous
text to the right.
Left Arrow Moves the cursor to the left.
Right Arrow Moves the cursor to the right.
Up Arrow Repeats the previously entered command. Each time the up arrow
is pressed, the command previous to that displayed appears. This
way it is possible to review the command history for the current
session. Use the down arrow to progress sequentially forward
through the command history list.
Down Arrow The down arrow displays the next command in the command
history entered in the current session. This displays each command
sequentially as it was entered. Use the up arrow to review previous
commands.
Tab Shifts the cursor to the next field to the left.

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Multiple Page Display Control Keys
Space Displays the next page.
CTRL+c Stops the display of remaining pages when multiple pages are to be
displayed.
ESC Stops the display of remaining pages when multiple pages are to be
displayed.
n Displays the next page.
p Displays the previous page.
q Stops the display of remaining pages when multiple pages are to be
displayed.
r Refreshes the pages currently displayed.
a Displays the remaining pages without pausing between pages.
Enter Displays the next line or table entry.

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4
BASIC SWITCH COMMANDS
The Basic Switch commands in the Command Line Interface (CLI) are listed (along with the appropriate
parameters) in the following table.
Command Parameter
create account [admin | oper | user] <username 15>
config account <username 15>
show account
show session
show switch
show serial_port
config serial_port {baud_rate [2400 | 4800 | 9600 | 19200 | 38400] auto_logout [never | 2_minutes |
5_minutes| 10_minutes | 15_minutes]}
enable clipaging
disable clipaging
delete account <username 15>
enable web <tcp_port_number 1-65535>
disable web
save
reboot <box_id 1-6>
reset
login
logout
ping <ipaddr> {times <value 1-255>} {timeout <sec 1-99>}
show cpu utilization
show configuration [running | startup]
enable jumbo_frame
disable jumbo_frame
show jumbo_frame
locate
Each command is listed in detail, as follows:

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create account
Purpose To create user accounts.
Syntax create account [admin | oper | user] <username 15>
Description The create account command creates an administrator, operator,
or user account that consists of a username and an optional
password. Up to 31 accounts can be created. The system prompts
for the account’s password, which may be between 0 and 15
characters.
Parameters admin −creates an administrator account.
oper −creates an operator account.
user −creates a user account.
<username 1-15> −The account username may be between 1 and
15 characters.
Restrictions Only Administrator or Operator-level users can issue this command.
Example usage:
To create an administrator-level user account with the username ‘dlink’:
DGS3100# create account admin dlink
Enter a case-sensitive password:****
Enter the password again for confirmation:****
Success.
DGS3100#
config account
Purpose To change the password for an existing user account.
Syntax config account <username 15>
Description The config account command changes the password for a user
account that has been created using the create account command.
The system prompts for the account’s new password, which may be
between 0 and 15 characters.
Parameters <username 1-15> −the account username.
Restrictions Only Administrator-level users can issue this command.