Nagios Support Forum

I’ve continued to tackle this and I believe I know what needs to be changed, I’m just not sure how to change it as I’m not a PHP programmer…
So here goes…
In the switch.inc.php file, toward the end of the file there is a snippet of code:
// we found the description
if(preg_match('/MRTG_INT_DESCR=/',$buf,$matches))
{
//key string
$key = 'MRTG_INT_DESCR="';
//find position of value and grab substring
$position = strpos($buf, $key) + strlen($key);
$descrip = substr( $buf, $position, (strlen($buf)) );
//strip quotes and spaces
$descrip = trim(str_replace('"', NULL, $descrip));

// save the description
$output[$port_number]["port_description"]=$descrip;
}
}//end 3rd IF


That code is looking at the output from the cfgmaker program. Here is an example of the output:

### Interface 3 >> Descr: 'GigabitEthernet1/3' | Name: 'Gi1/3' | Ip: '' | Eth: '30-72-30-30-31-36-62-61-64-32-34-38-39-63' ###
Target[10.20.1.1_GigabitEthernet1_3]: \GigabitEthernet1/3:default@10.20.1.1:
SetEnv[10.20.1.1_GigabitEthernet1_3]: MRTG_INT_IP="" MRTG_INT_DESCR="GigabitEthernet1/3"
MaxBytes[10.20.1.1_GigabitEthernet1_3]: 12500000
Title[10.20.1.1_GigabitEthernet1_3]: Traffic Analysis for GigabitEthernet1/3 -- switch22
PageTop[10.20.1.1_GigabitEthernet1_3]: <h1>Traffic Analysis for GigabitEthernet1/3 -- switch22</h1>
<div id="sysdetails">
<table>
<tr>
<td>System:</td>
<td>switch22 in Computer Room</td>
</tr>
<tr>
<td>Maintainer:</td>
<td>IS Dept.</td>
</tr>
<tr>
<td>Description:</td>
<td>GigabitEthernet1/3 03 is-jtest1-pc </td>
</tr>
<tr>
<td>ifType:</td>
<td>ethernetCsmacd (6)</td>
</tr>
<tr>
<td>ifName:</td>
<td>Gi1/3</td>
</tr>
<tr>
<td>Max Speed:</td>
<td>12.5 MBytes/s</td>
</tr>
</table>
</div>


If I understand this correctly the switch.inc.php file is using the wrong “KEY” information to get the correct data that I need.

I need the KEY to be : <td>Description:</td> and have it use everything between the <td> and </td> from the next line. My problem is that I don’t know what to use to find the string position to grab the value that I need.

If you can make that change then I think this just might work…


A related note…

In step 3 of the switch wizard, your first column “Port” shows the port numbers. This information is somewhat irrelevant as it does not correlate to anything. It is never the same as the actual port numbers or vlans, etc. I think a more useful first column would be to have the Port be the Port Name using the “Description” from Step 2 Ie… Port = Gigabit Ethernet 1/3 and then the third column, Port Name, would be what I am asking for above without the Gigabit Ethernet 1/3 in front of it…

End result would be:

Port Max Speed Port Name Bandwidth Port Status
GigabitEthernet1/1 1.00 Gbps 03 is-jtest1-pc


This gives a very definitive description of the port especially when it’s being graphed…