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)}
1. Using type "b" and a list of bit numbers like:
snmpset('FOO-MIB::bar.42', 'b', '0 1 2 3 4');
with the disadvantage that the success is not easily verifyable as an snmpget() for the same OID would return e.g. 0xF8.
2. Using type "x" and a hex number but without(!) the usual "0x" prefix:
snmpset('FOO-MIB::bar.42', 'x', 'F0');
snmpset
(PHP 4, PHP 5, PHP 7, PHP 8)
snmpset — Set the value of an SNMP object
Descrição
snmpset
( string
$hostname
, string $community
, array|string $object_id
, array|string $type
, array|string $value
, int $timeout = -1
, int $retries = -1
) : array|bool
snmpset() is used to set the value of an SNMP object
specified by the object_id.
Parâmetros
-
hostname -
The hostname of the SNMP agent (server).
-
community -
The write community.
-
object_id -
The SNMP object id.
-
type -
O MIB define o tipo de cada id de objeto. Pode ser um caractere da lista abaixo.
types = Lista de MIBs id i INTEGER u INTEGER s STRING x HEX STRING d DECIMAL STRING n NULLOBJ o OBJID t TIMETICKS a IPADDRESS b BITS Se
OPAQUE_SPECIAL_TYPESfoi definido durante a compilação da biblioteca SNMP, os seguintes também são válidos:types U unsigned int64 I signed int64 F float D double A maioria dos tipos tem correspondentes óbvios com tipos ASN.1. 's', 'x', 'd' e 'b' são modos diferentes de especificar um valor OCTET STRING e 'u' também é utilizado para manipular valores Gauge32.
Se MIB-Files foi carregado na árvore MIB com "snmp_read_mib" ou por especificá-lo na configuração do libsnmp, '=' pode ser utilizado como parâmetro
typepara todos os identificadores de objeto que podem ser lidos automaticamente do MIB.Note que há duas maneiras de configurar o tipo BITS, assim: "SYNTAX BITS {telnet(0), ftp(1), http(2), icmp(3), snmp(4), ssh(5), https(6)}":
- Utilizando "b" e uma lista de bits. Esse método não é recomendado desde que requisições GET para o mesmo OID pode retornar algo com 0xF8.
- Utilizando "x" e um número hex sem (!) o prefixo "0x".
Veja a seção de exemplo para mais detalhes.
-
value -
The new value.
-
timeout -
The number of microseconds until the first timeout.
-
retries -
The number of times to retry if timeouts occur.
Valor Retornado
Retorna true em caso de sucesso ou false em caso de falha.
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".
Exemplos
Exemplo #1 Using snmpset()
<?php
snmpset("localhost", "public", "IF-MIB::ifAlias.3", "s", "foo");
?>
Exemplo #2 Using snmpset() for setting BITS SNMP object id
<?php
snmpset("localhost", "public", 'FOO-MIB::bar.42', 'b', '0 1 2 3 4');
// or
snmpset("localhost", "public", 'FOO-MIB::bar.42', 'x', 'F0');
?>
add a note
User Contributed Notes 4 notes
ch at lathspell dot de ¶
14 years ago
deivis dot jakstas at gmail dot com ¶
17 years ago
If you setting hex values correct format is:
snmpset($source_ip,$community,"$oid","x","10 10 10 10");
slawrance at technologist dot com ¶
24 years ago
The "type" parameter must be one of the following, depending on the type of variable to set on the SNMP host:
i INTEGER
u unsigned INTEGER
t TIMETICKS
a IPADDRESS
o OBJID
s STRING
x HEX STRING
d DECIMAL STRING
n NULLOBJ
b BITS
If OPAQUE_SPECIAL_TYPES was defined while compiling the SNMP library, the
following are also valid:
U unsigned int64
I signed int64
F float
D double
As an example, using "i" would set an integer, and "s" would set a string. If the SNMP host rejects the data type, you might get the following message: "Warning: Error in packet. Reason: (badValue) The value given has the wrong type or length."
If you specify an unknown or invalid OID, you might get a "Could not add variable" message. When specifying an absolute OID (one that is already resolved) that is completely numeric, prepend it with a period. For example, an OID that could enable/disable Ethernet ports on an Asante hub might be "1.3.6.1.2.1.22.1.3.1.1.3.6.4.0", but you would need to use ".1.3.6.1.2.1.22.1.3.1.1.3.6.4.0" in the OID parameter so that the SNMP library won't try to resolve an already resolved OID. Friendly, unresolved OIDs do not need the period prepended, such as "system.SysContact.0"
tridman ¶
17 years ago
If you have importet the MIB-Files into the MIB Tree with "snmp_read_mib" you may use '=' as the "type" parameter.
In this case the type will also be taken from the loaded mib file. (Octest strings will be interpreted like strings though)
Comes in handy for a more dynamic use of snmpset.
