SNMP Functions
PHP Manual

snmp3_walk

Fetch all the SNMP objects from an agent

Description

arrayfalse snmp3_walk(
    string $hostname,
    string $security_name,
    string $security_level,
    string $auth_protocol,
    string $auth_passphrase,
    string $privacy_protocol,
    string $privacy_passphrase,
    arraystring $object_id,
    int $timeout = -1,
    int $retries = -1
)

snmp3_walk function is used to read all the values from an SNMP agent specified by the hostname.

Even if the security level does not use an auth or priv protocol/password valid values have to be specified.

Parameters

hostname

The hostname of the SNMP agent (server).

security_name

the security name, usually some kind of username

security_level

the security level (noAuthNoPriv|authNoPriv|authPriv)

auth_protocol

the authentication protocol ("MD5", "SHA", "SHA256", or "SHA512")

auth_passphrase

the authentication pass phrase

privacy_protocol

the privacy protocol (DES or AES)

privacy_passphrase

the privacy pass phrase

object_id

If null, object_id is taken as the root of the SNMP objects tree and all objects under that tree are returned as an array.

If object_id is specified, all the SNMP objects below that object_id are returned.

timeout

The number of microseconds until the first timeout.

retries

The number of times to retry if timeouts occur.

Return Values

Returns an array of SNMP object values starting from the object_id as root or false on error.

Changelog

Version Description
8.1.0 The auth_protocol now accepts "SHA256" and "SHA512" when supported by libnetsnmp.

Examples

Example #1 snmp3_walk Example

<?php
$ret = snmp3_walk('localhost', 'james', 'authPriv', 'SHA', 'secret007', 'AES', 'secret007', 'IF-MIB::ifName');
var_export($ret);
?>

Above function call would return all the SNMP objects from the SNMP agent running on localhost: 

      
array (
  0 => 'STRING: lo',
  1 => 'STRING: eth0',
  2 => 'STRING: eth2',
  3 => 'STRING: sit0',
  4 => 'STRING: sixxs',
)

See Also

  • snmp3_real_walk