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Q:

How can I get variable names instead of numeric OIDs in the output of php's SNMP::walk()?

Hey everyone,

So I've been working with PHP's SNMP::walk() function and I'm facing a small issue. When I use this function to retrieve SNMP data from a device, the output I get is in the form of numeric OIDs.

However, I was wondering if there's a way to get the variable names instead of these numeric OIDs in the output. It would be much easier for me to understand and work with the data if I could see the actual variable names.

Has anyone come across a similar situation? If so, could you please guide me on how to achieve this? I'd really appreciate any help or suggestions.

Thanks in advance!

All Replies

meghan.fahey

Hey there,

I understand your frustration with getting numeric OIDs instead of variable names in the output of PHP's SNMP::walk(). I've encountered a similar situation in the past, and I found a solution that worked for me.

One possible approach is to use the SNMP::setEnumPrint() method before calling the SNMP::walk() function. This method allows you to enable the printing of enumerations when SNMP values are translated. By doing this, you should be able to see the variable names instead of numeric OIDs in the output.

Here's a quick code snippet to demonstrate how you can use it:

php
<?php
$session = new SNMP(SNMP::VERSION_2c, $device, $community);

// Enable EnumPrint
$session->setEnumPrint(true);

// Perform the walk and get the variable names
$result = $session->walk($oid);

// Output the variable names
foreach ($result as $oid => $value) {
echo $oid . ": " . $value . "\n";
}
?>


By enabling EnumPrint, the SNMP::walk() function should now return the variable names alongside their respective values. Give it a try and let me know if it helps you obtain the desired output.

I hope this helps!

nasir10

Hey everyone,

I totally relate to the frustration of dealing with numeric OIDs instead of variable names when using PHP's SNMP::walk() function. I encountered a similar situation a while back, and after some trial and error, I found an alternative approach that worked for me.

In my case, I used the SNMP::get() function instead of SNMP::walk() to retrieve SNMP data. The SNMP::get() method allows you to fetch specific SNMP values by specifying their variable names directly, which is precisely what I was looking for.

Here's an example of how you can use SNMP::get() to get variable names instead of numeric OIDs in the output:

php
<?php
$session = new SNMP(SNMP::VERSION_2c, $device, $community);

// Get the specific SNMP values using variable names
$result = $session->get(array($variableName1, $variableName2));

// Output the variable names and their values
foreach ($result as $variableName => $value) {
echo $variableName . ": " . $value . "\n";
}
?>


By utilizing SNMP::get(), you can directly specify the variable names you want to retrieve, allowing you to work with the data more efficiently.

Give this approach a shot, and let me know if it resolves your issue. Don't hesitate to reach out if you have any further questions or if there's anything else I can assist you with.

Best regards,

june.harris

Hi everyone,

I completely understand the frustration of dealing with numeric OIDs instead of variable names when using PHP's SNMP::walk() method. I faced a similar challenge myself and discovered a slightly different solution that might help you resolve this issue.

Instead of relying solely on the SNMP::walk() function, I found that using the SNMP::translateObj() method provided the desired output with variable names. This method allows you to translate the numeric OIDs into their corresponding variable names.

Here's an example of how you can use SNMP::translateObj() along with SNMP::walk() to obtain variable names in the output:

php
<?php
$session = new SNMP(SNMP::VERSION_2c, $device, $community);

// Get the translated object definitions for variable names
$translatedObj = $session->translateObj();

// Perform the walk and get the numeric OIDs
$numericOids = $session->walk($oid);

// Output the variable names by translating the numeric OIDs
foreach ($numericOids as $oid => $value) {
$varName = $session->getQuick($translatedObj . $oid);
echo $varName . ": " . $value . "\n";
}
?>


By utilizing SNMP::translateObj(), you can retrieve the translated object definitions for the variable names from the SNMP device. Then, within the SNMP::walk() loop, you can use SNMP::getQuick() with the translated object definition concatenated with the numeric OID to obtain the variable name.

I hope this alternative solution works for you as well. Do give it a try and let me know if it helps you achieve the desired output. Feel free to ask if you have any further inquiries or need additional assistance.

Best regards,

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