D-Link DGS-1250 Series User manual

DGS-1250 Series Gigabit Ethernet Smart Managed Switch CLI Reference Guide
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Table of Contents
1. Introduction................................................................................................................................................................1
Audience ....................................................................................................................................................................... 1
Other Documentation................................................................................................................................................... 1
Conventions .................................................................................................................................................................. 1
Notes, Notices, and Cautions........................................................................................................................................ 1
Command Descriptions................................................................................................................................................. 2
Command Modes.......................................................................................................................................................... 2
Creating a User Account ............................................................................................................................................... 3
Error Messages.............................................................................................................................................................. 4
Editing Features ............................................................................................................................................................ 4
Display Result Output Modifiers................................................................................................................................... 5
2. CLI Commands .........................................................................................................................................................6
2-1 copy................................................................................................................................................................... 6
2-2 boot config ........................................................................................................................................................ 8
2-3 boot image ........................................................................................................................................................ 9
2-4 configure terminal........................................................................................................................................... 10
2-5 login (EXEC) ..................................................................................................................................................... 10
2-6 logout .............................................................................................................................................................. 11
2-7 end .................................................................................................................................................................. 11
2-8 exit................................................................................................................................................................... 12
2-9 delete .............................................................................................................................................................. 13
2-10 dir .................................................................................................................................................................... 13
2-11 ip address ........................................................................................................................................................ 14
2-12 ping.................................................................................................................................................................. 15
2-13 reboot.............................................................................................................................................................. 16
2-14 reset system.................................................................................................................................................... 17
2-15 ip route............................................................................................................................................................ 17
2-16 interface .......................................................................................................................................................... 18
2-17 ipv6 address .................................................................................................................................................... 19
2-18 ipv6 address dhcp ........................................................................................................................................... 20
2-19 ipv6 address autoconfig.................................................................................................................................. 20
2-20 ipv6 enable...................................................................................................................................................... 21
2-21 username ........................................................................................................................................................ 22
2-22 show unit......................................................................................................................................................... 23
2-23 show version ................................................................................................................................................... 23

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2-24 show boot ....................................................................................................................................................... 24
2-25 show ip interface............................................................................................................................................. 25
2-26 show ip route .................................................................................................................................................. 26
2-27 show ipv6 dhcp ............................................................................................................................................... 27
2-28 show ipv6 interface......................................................................................................................................... 28
2-29 show ipv6 route .............................................................................................................................................. 29
2-30 debug show tech-support ............................................................................................................................... 30

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1. Introduction
This manual’s command descriptions are based on the software release 1.00. The commands listed here are the
subset of commands that are supported by the DGS-1250 Series switch.
Audience
This reference manual is intended for network administrators and other IT networking professionals responsible for
managing the switch by using the Command Line Interface (CLI). The CLI is one of the management interfaces to
the DGS-1250 Series switch, which will be generally be referred to simply as the “Switch” within this manual. This
manual is written in a way that assumes that you already have experience with and knowledge of Ethernet and
modern networking principles for Local Area Networks.
Other Documentation
The documents below are a further source of information in regards to configuring and troubleshooting the Switch.
All the documents are available either from the CD, bundled with this switch, or from the D-Link website. Other
documents related to this switch are:
•DGS-1250 Series Hardware Installation Guide
•DGS-1250 Series Web UI Reference Guide
Conventions
Convention Description
Boldface Font Commands, command options and keywords are printed in boldface. Keywords, in
the command line, are to be entered exactly as they are displayed.
UPPERCASE ITALICS Font Parameters or values that must be specified are printed in UPPERCASE ITALICS.
Parameters in the command line are to be replaced with the actual values that are
desired to be used with the command.
Square Brackets [ ] Square brackets enclose an optional value or set of optional arguments.
Braces { } Braces enclose alternative keywords separated by vertical bars. Generally, one of
the keywords in the separated list can be chosen.
Vertical Bar | Optional values or arguments are enclosed in square brackets and separated by
vertical bars. Generally, one or more of the vales or arguments in the separated list
can be chosen.
Blue Courier Font This convention is used to represent an example of a screen console display
including example entries of CLI command input with the corresponding output. All
examples used in this manual are based on the DGS-1250-28XMP switch in the
DGS-1250 Series.
Notes, Notices, and Cautions
Below are examples of the three types of indicators used in this manual. When administering your switch using the
information in this document, you should pay special attention to these indicators. Each example below provides
an explanatory remark regarding each type of indicator.
NOTE: A note indicates important information that helps you make better use of your device.

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NOTICE: A notice indicates either potential damage to hardware or loss of data and tells you
how to avoid the problem.
CAUTION: A caution indicates a potential for property damage, personal injury, or death.
Command Descriptions
The information pertaining to each command in this reference guide is presented using a number of template fields.
The fields are:
•Description - This is a short and concise statement describing the functionality of the command.
•Syntax - The precise form to use when entering and issuing the command.
•Parameters - A table where each row describes the optional or required parameters, and their use, that
can be issued with the command.
•Default - If the command sets a configuration value or administrative state of the Switch then any default
settings (i.e. without issuing the command) of the configuration is shown here.
•Command Mode - The mode in which the command can be issued. These modes are described in the
section titled “Command Modes” below.
•Usage Guideline - If necessary, a detailed description of the command and its various utilization scenarios
is given here.
•Example(s) - Each command is accompanied by a practical example of the command being issued in a
suitable scenario.
Command Modes
There are several command modes available in the command-line interface (CLI). The set of commands available
to the user depends on the mode the user is currently in. The user can see all the commands that are available in
a particular command mode by entering a question mark (?) at the system prompt.
The command-line interface has a number of command modes. There are two basic command modes:
•EXEC Mode
•Global Configuration Mode
All other sub-configuration modes can be accessed via the Global Configuration Mode.
EXEC Mode
Users logged in with this command mode can monitor all system information and change any system configuration
settings mentioned in this Configuration Guide.
Global Configuration Mode
The primary purpose of the global configuration mode is to apply global settings to the entire switch. In addition to
applying global settings to the entire switch, the user can also access other sub-configuration modes. In order to
access the global configuration mode, enter the configure terminal command in the EXEC mode.
The following example shows how to enter the Global Configuration mode.

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Switch#configure terminal
Switch(config)#
The exit command is used to exit the global configuration mode and return to the EXEC mode.
Switch(config)#exit
Switch#
The procedures to enter the different sub-configuration modes can be found in the related chapters in this
Configuration Guide. The command modes are used to configure the individual functions.
Creating a User Account
You can create multiple user accounts. This section will assist a user with creating a user account by means of the
Command Line Interface.
NOTE: By default, one user account is already configured on the Switch. Both the username
and password for this account is admin.
Observe the following example.
Switch#configure terminal
Switch(config)#username account password account
In the above example we had to navigate and access the username command.
•We entered the configure terminal command to access the Global Configuration Mode. The username
command can be used in the Global Configuration Mode.
•The username account password account command creates an account with the username of account
and a password of account.
Save the running configuration to the start-up configuration. This means to save the changes made so that when
the Switch is rebooted, the configuration will not be lost. The following example shows how to save the running
configuration to the start-up configuration.
Switch#copy running-config startup-config
Destination filename startup-config? [y/n]: y
Saving all configurations to NV-RAM.......... Done.
Switch#
After the Switch has rebooted, or after the users log out and back in, the newly created username and password
must be entered to access the CLI interface again, as seen below.

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DGS-1250-28XMP Gigabit Ethernet Smart Managed Switch
Command Line Interface
Firmware: Build 1.00.038
Copyright(C) 2019 D-Link Corporation. All rights reserved.
User Access Verification
Username:admin
Password:*****
Error Messages
When users issue a command that the Switch does not recognize, error messages will be generated to assist
users with basic information about the mistake that was made. A list of possible error messages are found in the
table below.
Error Message Meaning
Ambiguous command Not enough keywords were entered for the Switch to recognize the
command.
Incomplete command The command was not entered with all the required keyword.
Invalid input detected at ^marker The command was entered incorrectly.
The following example shows how an ambiguous command error message is generated.
Switch#show v
Ambiguous command
Switch#
The following example shows how an incomplete command error message is generated.
Switch#show
Incomplete command
Switch#
The following example shows how an invalid input error message is generated.
Switch#show verb
^
Invalid input detected at ^marker
Switch#
Editing Features
The command line interface of this switch supports the following keyboard keystroke editing features.
Keystroke Description
Delete Deletes the character under the cursor and shifts the remainder of the line to the
left.
Backspace Deletes the character to the left of the cursor and shifts the remainder of the line to
the left.

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Left Arrow Moves the cursor to the left.
Right Arrow Moves the cursor to the right.
CTRL+R Toggles the insert text function on and off. When on, text can be inserted in the line
and the remainder of the text will be shifted to the right. When off, text can be
inserted in the line and old text will automatically be replaced with the new text.
Return Scrolls down to display the next line or used to issue a command.
Space Scrolls down to display the next page.
ESC Escapes from the displaying page.
Display Result Output Modifiers
Results displayed by show commands can be filtered using the following parameters:
•begin FILTER-STRING - This parameter is used to start the display with the first line that matches the filter
string.
•include FILTER-STRING - This parameter is used to display all the lines that match the filter string.
•exclude FILTER-STRING - This parameter is used to exclude the lines that match the filter string from the
display.

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2. CLI Commands
2-1 copy
This command is used to copy a file to another file.
copy SOURCE-URL DESTINATION-URL
copy SOURCE-URL tftp: [//LOCATION/DESTINATION-URL]
copy tftp: [//LOCATION/SOURCE-URL]DESTINATION-URL
Parameters
SOURCE-URL Specifies the source URL for the source file to be copied. One special form of the
URL is represented by the following keywords.
If startup-config is specified as the SOURCE-URL, the purpose is to upload the
startup configuration, save the startup configuration as the file in the file system, or
to execute the startup configuration as the running configuration.
If running-config is specified as the SOURCE-URL, the purpose is to upload the
running configuration or save the running configuration as the startup configuration
or to save it as the file in the file system.
If flash: [PATH-FILE-NAME]is specified as the SOURCE-URL, the purpose is to
specify the source file to be copied in the file system.
DESTINATION-URL Specifies the destination URL for the copied file. One special form of the URL is
represented by the following keywords.
If running-config is specified as the DESTINATION-URL, the purpose is to apply
a configuration to the running configuration.
If startup-config is specified as the DESTINATION-URL, the purpose is to save a
configuration to the next-boot configuration. That is to keep the current
configuration into the NVRAM and the file name will be the same as the file name
specified with the boot config command.
If flash: {Image1 | Image2 | Config1 | Config2} is specified as the
DESTINATION-URL, the purpose is to specify the copied file in the file system.
LOCATION (Optional) Specifies the IPv4/IPv6 address of the TFTP server.
Default
None.
Command Mode
EXEC Mode.
Usage Guideline
Use this command to copy a file to another file in the file system. Use this command to download or upload the
configuration file or the image file. To upload the running configuration or save the running configuration to the
startup configuration, specify running-config as the SOURCE-URL. To save the running configuration to the
startup configuration, specify startup-config as the DESTINATION-URL.
As the destination is the startup configuration, the source file is directly copied to the file specified in the boot
config command. Thus the original startup configuration file will be overwritten.
To apply a configuration file to the running configuration, specify running-config as the DESTINATION-URL for
the copy command and the configuration file will be executed immediately by using the increment method. That
means that the specified configuration will merge with the current running configuration. The running configuration
will not be cleared before applying of the specified configuration.

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As the specified source is the system log and the specified destination is a URL, the current system log will be
copied to the specified URL.
To represent a file in the remote TFTP server, the URL must be prefixed with “tftp: //”.
To download the firmware image, the user should use the copy tftp: // command to download the file from the
TFTP server to a file in the file system. Then, use the boot image command to specify it as the boot image file.
Example
This example shows how to configure the Switch’s running configuration by using the increment method using the
configuration called “switch-config.cfg” that is download from the TFTP server 10.1.1.254.
Switch#copy tftp: //10.1.1.254/switch-config.cfg running-config
Address of remote host [10.1.1.254]?
Source filename [switch-config.cfg]?
Destination filename running-config? [y/n]: y
Accessing tftp://10.1.1.254/switch-config.cfg...
Transmission start...
Transmission finished, file length 29974 bytes.
Executing script file switch-config.cfg ......
Executing done
Switch#
This example shows how to upload the running configuration to the TFTP server for storage.
Switch#copy running-config tftp: //10.1.1.254/switch-config.cfg
Address of remote host [10.1.1.254]?
Destination filename [switch-config.cfg]?
Accessing tftp://10.5.2.101/switch-config.cfg...
Transmission start...
Transmission finished, file length 28999 bytes.
Switch#
This example shows how to save the system’s running configuration into the flash memory and uses it as the next
boot configuration.
Switch#copy running-config startup-config
Destination filename startup-config? [y/n]: y
Saving all configurations to NV-RAM.......... Done.
Switch#

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This example shows how to execute the “Config2” file in the NVRAM immediately by using the increment method.
Switch#copy flash: Config2 running-config
Source filename [Config2]?
Destination filename running-config? [y/n]: y
Executing script file Config2 ......
Executing done
Switch#
This example shows how to download an image file from the TFTP server.
Switch#copy tftp: //10.1.1.254/runtime.had flash: Image1
Address of remote host [10.1.1.254]?
Source filename [runtime.had]?
Accessing tftp://10.1.1.254/runtime.had...
Transmission start...
Transmission finished, file length 8713712 bytes.
Please wait, programming flash.............. 100 %
Please wait, programming flash for language files .............Done.
Switch#
2-2 boot config
This command is used to specify the file that will be used as the configuration file for the next boot.
boot config {Config1 | Config2}
Parameters
Config1 Specifies to use Config1 as the startup configuration file.
Config2 Specifies to use Config2 as the startup configuration file.
Default
By default, Config1 is used.
Command Mode
Global Configuration Mode.
Usage Guideline
The command is used to specify the startup configuration file. If there is no valid configuration file, the device will
be configured to the default state.

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Example
This example shows how to configure the file “Config2” as the startup configuration file.
Switch#configure terminal
Switch(config)#boot config Config2
Switch(config)#
2-3 boot image
This command is used to specify the file that will be used as the image file for the next boot.
boot image [check] {Image1 | Image2}
Parameters
check (Optional) Specifies to display the firmware information for the specified file. This
information includes the version number and model description.
Image1 Specifies to use Image1 as the boot image file.
Image2 Specifies to use Image2 as the boot image file.
Default
By default, Image1 is the boot image.
Command Mode
Global Configuration Mode.
Usage Guideline
When using the boot image command, the associated specified boot image file will be the startup boot image file
for the next reboot. Use this command to assign a file as the next-boot image file. The system will check the model
and checksum to determine whether the file is a valid image file.
The purpose of the check parameter is for checking the file information to let the user understand whether the
specified file is suitable to be a boot image or not. The setting of the boot image command will immediately be
stored in the NVRAM, which is a space separated from the start-up configuration.
Example
This example shows how to specify that the Switch should use the image file named “Image1” as the boot image
file for the next startup.
Switch#configure terminal
Switch(config)#boot image Image1
Switch(config)#

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This example shows how to check Image1. The checksum of the image file has been verified is okay and the
information of the image file is displayed.
Switch#configure terminal
Switch(config)#boot image check Image1
----------------------
Image information
----------------------
Version: 1.00.038
Description: D-Link Corporation Gigabit Ethernet Smart Managed Switch
Switch(config)#
2-4 configure terminal
This command is used to enter the Global Configuration Mode.
configure terminal
Parameters
None.
Default
None.
Command Mode
EXEC Mode.
Usage Guideline
This command is used to enter the Global Configuration Mode.
Example
This example shows how to enter the Global Configuration Mode.
Switch#configure terminal
Switch(config)#
2-5 login (EXEC)
This command is used to configure a login username.
login
Parameters
None.
Default
None.

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Command Mode
EXEC Mode.
Usage Guideline
Use this command to change the login account. Three attempts are allowed to log into the Switch’s interface.
When using Telnet, if all attempts fail, access will return to the command prompt. If no information is entered within
60 seconds, the session will return to the state when logged out.
Example
This example shows how to login with username “user1”.
Switch#login
Username: user1
Password: xxxxx
Switch#
2-6 logout
This command is used to close an active terminal session by logging off the Switch.
logout
Parameters
None.
Default
None.
Command Mode
EXEC Mode.
Usage Guideline
Use this command to close an active terminal session by logging out of the device.
Example
This example shows how to log out.
Switch#logout
2-7 end
This command is used to end the current configuration mode and return to the highest mode in the CLI mode
hierarchy, which is the EXEC Mode.

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end
Parameters
None.
Default
None.
Command Mode
EXEC Mode.
Any Configuration Mode.
Usage Guideline
Executing this command will return access to the highest mode in the CLI hierarchy.
Example
This example shows how to end the Interface Configuration Mode and go back to the EXEC Mode.
Switch#configure terminal
Switch(config)#interface vlan1
Switch(config-if)#end
Switch#
2-8 exit
This command is used to end the configuration mode and go back to the last mode. If the current mode the EXEC
Mode, executing the exit command logs you out of the current session.
exit
Parameters
None.
Default
None.
Command Mode
EXEC Mode.
Any Configuration Mode.
Usage Guideline
Use this command to exit the current configuration mode and go back to the last mode. When the user is in the
EXEC Mode, this command will log out the session.

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Example
This example shows how to exit from the Interface Configuration Mode and return to the Global Configuration
Mode.
Switch#configure terminal
Switch(config)#interface vlan1
Switch(config-if)#exit
Switch(config)#
2-9 delete
This command is used to delete a file.
delete FILE-URL
Parameters
FILE-URL Specifies the name of the file to be deleted.
Default
None.
Command Mode
EXEC Mode.
Usage Guideline
The firmware image or the configuration file that is specified as the boot-up file cannot be deleted.
Example
This example shows how to delete the file named “Image2” from file system on the local flash.
Switch#delete Image2
Delete Image2? (y/n) [n] y
File is deleted.
Switch#
2-10 dir
This command is used to display the information for a file or the listing of files in the specified path name.
dir [URL]
Parameters
URL (Optional) Specifies the name of the file or directory to be displayed.
Default
None.

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Command Mode
EXEC Mode.
Usage Guideline
If URL is not specified, the current directory is used. By default, the current directory is located at the root of the file
system located at local flash. The storage media is mounted in the file system and appears to the user as a sub-
directory under the root directory.
The supported file systems can be displayed as the user issues the dir command for the root directory.
Example
This example shows how to display the root directory of the switch.
Switch#dir
Directory of /c:
1 -rw 8239712 Jan 01 2000 00:02:37 Image1
2 -rw 8239712 Jan 01 2000 00:04:16 Image2
3 -rw 29076 Jan 01 2000 00:05:02 Config1
4 -rw 29076 Jan 01 2000 00:05:06 Config2
5 d-- 1216 Jan 01 2000 00:05:06 system
46305280 bytes total (20955136 bytes free)
Switch#
2-11 ip address
This command is used to set an IPv4 address for an interface, or acquire an IP address on an interface from the
DHCP. Use the no form of this command to remove the configuration of an IP address or disable DHCP on the
interface.
ip address {IP-ADDRESS SUBNET-MASK | dhcp}
no ip address {IP-ADDRESS SUBNET-MASK | dhcp}
Parameters
IP-ADDRESS Specifies the IP address.
SUBNET-MASK Specifies the subnet mask for the associated IP address.
dhcp Specifies to acquire an IP address configuration on an interface from the DHCP
protocol.
Default
The default IP address for VLAN 1 is 10.90.90.90/8.
Command Mode
Interface Configuration Mode.
Usage Guideline
The IPv4 address of an interface can be either manually assigned by the user or dynamically assigned by the
DHCP server. Use the no ip address command to delete the configured IP address entry.

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Example
This example shows how to configure 10.108.1.27 as the IP address for VLAN 1.
Switch#configure terminal
Switch(config)#interface vlan1
Switch(config-if)#ip address 10.108.1.27 255.0.0.0
Switch(config-if)#
2-12 ping
This command is used to diagnose basic network connectivity.
ping {[ip] IP-ADDRESS | [ipv6] IPV6-ADDRESS | HOST-NAME} [count TIMES] [timeout SECONDS]
[source {IP-ADDRESS | IPV6-ADDRESS}]
Parameters
ip (Optional) Specifies to use the IPv4 address.
IP-ADDRESS Specifies the IPv4 address of the destination host.
ipv6 (Optional) Specifies to use the IPv6 address.
IPV6-ADDRESS Specifies the IPv6 address of the system to discover.
HOST-NAME Specifies the host name of the system to discover.
count TIMES (Optional) Specifies to stop after sending the specified number of echo request
packets.
timeout SECONDS (Optional) Specifies response timeout value, in seconds.
source {IP-ADDRESS |
IPV6-ADDRESS} (Optional) Specifies the source IP address used for the ping packet. The specified
IP address must one of the IP address configured for the Switch. The destination
address and the source IP must be the same type of address, both are IPv4 or
IPv6.
Default
The count value is not specified. The ping will continue until the user terminates the process.
The timeout value is 1 second.
Command Mode
EXEC Mode.
Usage Guideline
Use this command to verify the reachability, reliability, and delay of the path to the destination host. To terminate
the ping before it has finished, press CTRL+C.

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Example
This example shows how to ping the host with IP address 172.50.71.123.
Switch#ping 172.50.71.123 count 5
Reply from 172.50.71.123, time<10ms
Reply from 172.50.71.123, time<10ms
Reply from 172.50.71.123, time<10ms
Reply from 172.50.71.123, time<10ms
Reply from 172.50.71.123, time<10ms
Ping Statistics for 172.50.71.123
Packets: Sent =5, Received =5, Lost =0
Switch#
This example shows how to ping the host with IPv6 address 2001:238:f8a:77:7c10:41c0:6ddd:ecab.
Switch#ping 2001:238:f8a:77:7c10:41c0:6ddd:ecab count 3
Reply from 2001:238:f8a:77:7c10:41c0:6ddd:ecab, bytes=100, time<10 ms
Reply from 2001:238:f8a:77:7c10:41c0:6ddd:ecab, bytes=100, time<10 ms
Reply from 2001:238:f8a:77:7c10:41c0:6ddd:ecab, bytes=100, time<10 ms
Ping Statistics for 2001:238:f8a:77:7c10:41c0:6ddd:ecab
Packets: Sent =3, Received =3, Lost =0
Switch#
2-13 reboot
This command is used to reboot the Switch.
reboot [force_agree]
Parameters
force_agree (Optional) Specifies to restart the Switch without confirmation.
Default
None.
Command Mode
EXEC Mode.
Usage Guideline
This command is used to reboot the Switch.

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Example
This example shows how to reboot the Switch.
Switch#reboot force_agree
Please wait, the switch is rebooting...
2-14 reset system
This command is used to reset the system, clear the system’s configuration, and then save and reboot the Switch.
reset system
Parameters
None.
Default
None.
Command Mode
EXEC Mode.
Usage Guideline
Use this command to clear the system’s configuration. The configuration data will revert to the default settings,
save it to the start-up configuration file, and then reboot the Switch. Before using this command, save a backup of
the configuration using the copy command or upload the configuration profile to the TFTP server.
Example
This example shows how to reset the system to the factory default settings.
Switch#reset system
This command will clear the system's configuration to the factory
default settings, including the IP address.
Clear system configuration, save, reboot? (y/n) [n] y
Saving configurations and logs to NV-RAM...... 100 %
Please wait, the switch is rebooting...
2-15 ip route
This command is used to create a static route entry. Use the no form of this command to remove a static route
entry.
ip route NETWORK-PREFIX NETWORK-MASK IP-ADDRESS [primary | backup]
no ip route NETWORK-PREFIX NETWORK-MASK IP-ADDRESS