
Using the SNMP Utilities
4.1 Using the MIB Browser
Table 4–1 (Cont.) snmp_request Command Parameters
Parameter
Function
"community"
The community string to be used in the query. This parameter is case
sensitive. Typically, agents are configured to permit read access to
the community string "public". For accurate interpretation, be sure to
enclose the name in quotation marks (" "). Note that if you do not use
quotation marks, the name is changed to lowercase.
request-type
PDU type to send. Can be one of the following SNMP requests:
Get
Sends a Get-Request PDU.
GetNext
Sends a GetNext-Request PDU.
GetBulk
Sends a GetBulk-Request PDU (SNMP Version 2
only).
Set
Sends a Set-Request PDU.
variable
An object identifier (OID) in ASN.1 notation that is associated with
an object in a MIB. For example:
$ snmp_request host1 "public" getnext -d 1.3.6.1.6.3.1.1.6
data-type
Data type of the value. This parameter can be specified for
Set
requests. The data types are described in Section 4.1.3.
value
The value to which to set the contents of the OID. This parameter is
used for
set
requests.
For
Set
requests, you can specify more than one group of the following:
•
variable-name
•
data-type
•
value
For other requests, you can specify more than one variable name, except when
you specify the
-l
or
-t
flag; these flags are valid only with a
GetNext
or
GetBulk
request, for which only one OID is permitted.
4.1.2 MIB Browser Flags
Flags are specified in UNIX format.
Because flags and data types are case sensitive, you should always enter them in
the case that is specified. If a letter or value is specified as uppercase, you must
enclose it in quotation marks. In general, if you use uppercase letters where
lowercase is specified, the results are unpredictable. For example, the flag
"-v2C"
functions correctly but the flag
"-V2c"
does not, because the flag character (
v
)
must be lowercase.
If you do not specify a flag, or if you specify an invalid flag, a usage message is
displayed. You must place the flags after the
request-type
parameter.
Table 4–2 describes the flags for the
snmp_request
command.
4–2 Using the SNMP Utilities