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Chapter 4: Web management
NS3550-8T-2S Industrial Managed Switch User Manual
63
Object
Description
Write Community
Indicates the community write access string to permit access to the
SNMP agent. The allowed string length is 0 to 255, and the allowed
content is the ASCII characters from 33 to 126.
The field is applicable only when the SNMP version is SNMPv1 or
SNMPv2c. If the SNMP version is SNMPv3, the community string will
be associated with the SNMPv3 communities table. It provides more
flexibility to configure a security name than a SNMPv1 or SNMPv2c
community string. In addition to the community string, a particular
range of source addresses can be used to restrict the source subnet.
Engine ID
Indicates the SNMPv3 engine ID. The string must contain an even
number between 10 and 64 hexadecimal digits, but all-zeros and all-
'F's are not allowed. Change of the Engine ID will clear all original
local users.
Buttons
• Click
Save
to save changes.
• Click
Reset
to undo any changes made locally and revert to previously saved
values.
The SNMP trap configuration table includes the following fields:
Object
Description
Trap Mode
Indicates the SNMP trap mode operation. Selections include:
Enabled
: Enable SNMP trap mode operation.
Disabled
: Disable SNMP trap mode operation.
Trap Version
Indicates the SNMP trap supported version. Selections include:
SNMP v1
: Set SNMP trap supported version 1.
SNMP v2c
: Set SNMP trap supported version 2c.
SNMP v3
: Set SNMP trap supported version 3.
Trap Community
Indicates the community access string when sending the SNMP trap
packet. The allowed string length is 0 to 255, and the allowed content
is the ASCII characters from 33 to 126.
Trap Destination Address
Indicates the SNMP trap destination address. It allows a valid IP
address in dotted decimal notation ('x.y.z.w') as well as a valid
hostname. A valid hostname is a string drawn from the alphabet (A-
Za-z), digits (0-9), dot (.), dash (-). Spaces are not allowed, the first
character must be an alpha character, and the first and last
characters must not be a dot or a dash.
Trap Destination IPv6
Address
Indicates the SNMP trap destination IPv6 address. IPv6 address is in
128-bit records represented as eight fields of up to four hexadecimal
digits with a colon separating each field (:). For example,
'fe80::215:c5ff:fe03:4dc7'. The symbol '::' is a special syntax that can
be used as a shorthand way of representing multiple 16-bit groups of
contiguous zeros; but it can appear only once. It can also represent a
legally valid IPv4 address. For example, '::192.1.2.34'.
Trap Authentication Failure
Indicates the SNMP entity is permitted to generate authentication
failure traps. Selections include: