Dell PowerConnect 3048 User Manual page 43

Community Table
In the Community Table page, you can create different communities and customize access. The public string has Get privileges by default.
The following options are available:
Community String — Type the name of the community you want to create.
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Get — Allows read access to the switch's SNMP information for members of the SNMP community.
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Set — Allows write access to the switch's SNMP information for members of the SNMP community.
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Trap — Allows members of the SNMP community to receive SNMP traps.
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Host Table
From the Host Table page, you can add and remove hosts from access rights that have been granted to community groups. The permissions GET, SET, and
TRAP are assigned to a community name and then these permissions are assigned to individual machines by adding those machines and their IP addresses to
the appropriate community string. Host authorization can be enabled or disabled.
If the host authorization is disabled (the default setting), the switch allows any SNMP manager to access the switch. If the host authorization is enabled, the
administrator can specify up to 16 SNMP managers on the host table that can access the switch.
You must enable host authorization before you can use the host table. Host authorization is a security feature to limit people who are not listed in the host
table from accessing the switch.
Once you have enabled host authorization, you must add the host to this table through the console port connection. Otherwise, the switch cannot access the
end station using SNMP.
Add host
1. Enter the host name, IP address, and the community string. Press <Enter> after each entry to move to the next field.
2. In the Status field, press the spacebar until the desired status is displayed.
3. Press <Ctrl><w> to save all changes.