SNMP2_SET(3) 1 SNMP2_SET(3)
snmp2_set - Set the value of anSNMPobject
SYNOPSIS
bool snmp2_set (string $host, string $community, string $object_id, string $type, string $value, [string $timeout = 1000000], [string
$retries = 5])
DESCRIPTION
snmp2_set(3) is used to set the value of an SNMP object specified by the $object_id.
PARAMETERS
o $host
- The hostname of the SNMP agent (server).
o $community
- The write community.
o $object_id
- The SNMP object id.
o $type
- The MIB defines the type of each object id. It has to be specified as a single character from the below list.
types
+--+--------------------------------+
|= | |
| | |
| | The type is taken from the MIB |
| | |
|i | |
| | |
| | INTEGER |
| | |
|u | |
| | |
| | INTEGER |
| | |
|s | |
| | |
| | STRING |
| | |
|x | |
| | |
| | HEX STRING |
| | |
|d | |
| | |
| | DECIMAL STRING |
| | |
|n | |
| | |
| | NULLOBJ |
| | |
|o | |
| | |
| | OBJID |
| | |
|t | |
| | |
| | TIMETICKS |
| | |
|a | |
| | |
| | IPADDRESS |
| | |
|b | |
| | |
| | BITS |
| | |
+--+--------------------------------+
If OPAQUE_SPECIAL_TYPES was defined while compiling the SNMP library, the following are also valid:
types
+--+----------------+
|U | |
| | |
| | unsigned int64 |
| | |
|I | |
| | |
| | signed int64 |
| | |
|F | |
| | |
| | float |
| | |
|D | |
| | |
| | double |
| | |
+--+----------------+
Most of these will use the obvious corresponding ASN.1 type. 's', 'x', 'd' and 'b' are all different ways of specifying an OCTET
STRING value, and the 'u' unsigned type is also used for handling Gauge32 values. If the MIB-Files are loaded by into the MIB Tree
with "snmp_read_mib" or by specifying it in the libsnmp config, '=' may be used as the $type parameter for all object ids as the
type can then be automatically read from the MIB. Note that there are two ways to set a variable of the type BITS like e.g. "SYNTAX
BITS {telnet(0), ftp(1), http(2), icmp(3), snmp(4), ssh(5), https(6)}":
o Using type "b" and a list of bit numbers. This method is not recommended since GET query for the same OID would return e.g.
0xF8.
o Using type "x" and a hex number but without(!) the usual "0x" prefix.
See examples section for more details.
o $value
- The new value.
o $timeout
- The number of microseconds until the first timeout.
o $retries
- The number of times to retry if timeouts occur.
RETURN VALUES
Returns TRUE on success or FALSE on failure.
If the SNMP host rejects the data type, an E_WARNING message like "Warning: Error in packet. Reason: (badValue) The value given has the
wrong type or length." is shown. If an unknown or invalid OID is specified the warning probably reads "Could not add variable".
EXAMPLES
Example #1
Using snmp2_set(3)
<?php
snmp2_set("localhost", "public", "IF-MIB::ifAlias.3", "s", "foo");
?>
Example #2
Using snmp2_set(3) for setting BITS SNMP object id
<?php
snmp2_set("localhost", "public", 'FOO-MIB::bar.42', 'b', '0 1 2 3 4');
// or
snmp2_set("localhost", "public", 'FOO-MIB::bar.42', 'x', 'F0');
?>
SEE ALSO
snmp2_get(3).
PHP Documentation Group SNMP2_SET(3)