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DGS-3224TGR Gigabit Ethernet Switch User’s Guide
44
Host IP
Type the IP address of the remote management station that will serve as the SNMP
host for the switch.
SNMP Version
From the pull-down menu select:
V1
– To specifies that SNMP version 1 will be used.
V2c
– To specify that SNMP version 2 will be used.
V3-NoAuth-NoPriv
– To specify that the SNMP version 3 will be used, with a NoAuth-
NoPriv security level.
V3-Auth-NoPriv
– To specify that the SNMP version 3 will be used, with an Auth-NoPriv
security level.
V3-Auth-Priv
– To specify that the SNMP version 3 will be used, with an Auth-Priv
security level.
Community
String
/SNMPv3 User Name
Type in the community string or SNMP V3 user name as appropriate.
SNMP Group Table
The SNMP Group created with this table maps SNMP users (identified in the SNMP User Table) to the views created in the
previous window.
Figure 6- 18.
SNMP Group Table window
To delete an existing entry, click the selection button in the right-hand column that corresponds to the port you want to
remove. To create a new entry, click the
New
button, a separate window will appear.
Page 57 / 160
DGS-3224TGR Gigabit Ethernet Switch User’s Guide
45
Figure 6- 19.
SNMP Group Table – Add window
The following parameters are used in the SNMP Group Table windows:
Parameter
Description
Group Name
Type an alphanumeric string of up to 32 characters. This is used to identify the new
SNMP group of SNMP users.
Read View Name
This name is used to specify the SNMP group created can request SNMP messages.
Write View Name
Specify a SNMP group name for users that are allowed SNMP write privileges to the
switch’s SNMP agent.
Notify View Name
Specify a SNMP group name for users that can receive SNMP trap messages
generated by the switch’s SNMP agent.
Security Model
Use the pull-down menu to select the SNMP version. Select one of the following:
SNMPv1
– Specifies that SNMP version 1 will be used.
SNMPv2
– Specifies that SNMP version 2c will be used. The SNMP v2c supports both
centralized and distributed network management strategies. It includes improvements
in the Structure of Management Information (SMI) and adds some security features.
SNMPv3
– Specifies that the SNMP version 3 will be used. SNMP v3 provides secure
access to devices through a combination of authentication and encrypting packets over
the network.
Security Level
Use the pull-down menu to select the SNMP version:
NoAuthNoPriv
−
Specifies that there will be no authorization and no encryption of
packets sent between the switch and a remote SNMP manager.
AuthNoPriv
−
Specifies that authorization will be required, but there will be no
encryption of packets sent between the switch and a remote SNMP manager.
AuthPriv
−
Specifies that authorization will be required, and that packets sent between
the switch and a remote SNMP manger will be encrypted.
Page 58 / 160
DGS-3224TGR Gigabit Ethernet Switch User’s Guide
46
Engine ID
The Engine ID is a unique identifier used for SNMP V3 implementations. This is an alphanumeric string used to identify
the SNMP engine on the switch.
Figure 6- 20.
Engine ID window
To change the Engine ID, type the new Engine ID in the space provided and click the
Apply
button.
SNMP User Table
Use the SNMP User Table to create a new SNMP user and add the user to an existing SNMP group or to a newly created
group.
Figure 6- 21.
SNMP User Table window
To delete an existing entry, click the selection button in the right-hand column that corresponds to the port you want to
configure and then click
Delete
. To create a new entry, click the
New
button, a separate window will appear.
Page 59 / 160
DGS-3224TGR Gigabit Ethernet Switch User’s Guide
47
Figure 6- 22.
SNMP User Table – Add window
The following parameters are used in the SNMP User Table windows:
Parameter
Description
User Name
Type in the new SNMP V3 user name or community string for V1 or V2. This can be
any alphanumeric name of up to 32 characters that will identify the new SNMP user.
Group Name
Type in the new SNMP V3 group name. Again, this can be any alphanumeric name of
up to 32 characters that will identify the SNMP group the new SNMP user will be
associated with.
SNMP Version
From the pull-down menu select:
V1
– To specifies that SNMP version 1 will be used.
V2
c– To specify that SNMP version 2 will be used.
V3
– To specify that the SNMP version 3 will be used.
If Encryption (V3 only) is
checked configure also:
Auth-Protocol
In the space provided, type an alphanumeric sting of between 8 and 20 characters that
will be used to authorize the agent to receive packets for the host.
From the pull-down menu select:
MD5
−
To specify that the HMAC-MD5-96 authentication level will be used.
SHA
−
To specify that the HMAC-SHA-96 authentication level will be used.
If Encryption (V3 only) is
checked configure also:
PrivProtocol
In the space provided, type an alphanumeric string of between 8 and 16 characters that
will be used to encrypt the contents of messages the host sends to the agent.
Method
From the pull-down menu select:
by_password
– The auth_password string length ranges from 4 to 8.
by_key
– The auth_key string length is 16 and must be hexadecimal.
Page 60 / 160
DGS-3224TGR Gigabit Ethernet Switch User’s Guide
48
Management Station IP Addresses
Management stations are computers on the network that will be used to manage the switch. You can limit the number of
possible management stations by entering up to three IP addresses. If the three IP Address
fields contain all zeros (“0”),
then any station with any IP address can access the switch to manage and configure it. If there is one or more IP addresses
entered in the
IP Address
fields, then only stations with the IP addresses entered will be allowed to access the switch to
manage or configure it.
Figure 6- 23.
Management Station IP Addresses window
Switch Utilities
TFTP Services
Trivial File Transfer Protocol (TFTP) services allow the switch firmware to be upgraded by downloading a new firmware
file from a TFTP server to the switch. A configuration file can also be loaded into the switch, and switch settings can be
saved to a TFTP server. In addition, the switch’s history log can be uploaded to a TFTP server.
Please note that TFTP server software must be running on the management station for the TFTP services listed here to
work.
Download Firmware from TFTP Server
Figure 6- 24.
Download Firmware from TFTP Server window
Enter the IP address of the TFTP server in the Server IP Address field and the complete path and file name of the firmware
file for the switch in the Path/Filename field. Click
Download
to initiate the file transfer.

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